Ajout du sampler et de l'input

src/App.svelte

@@ -4,6 +4,7 @@
   import VUMeter from "./lib/components/VUMeter.svelte";
   import { engines } from "./lib/audio/engines/registry";
   import type { SynthEngine } from "./lib/audio/engines/SynthEngine";
+  import type { EngineType } from "./lib/audio/engines/SynthEngine";
   import { AudioService } from "./lib/audio/services/AudioService";
   import { downloadWAV } from "./lib/audio/utils/WAVEncoder";
   import {
@@ -18,9 +19,12 @@
     getAllProcessors,
   } from "./lib/audio/processors/registry";
   import type { AudioProcessor } from "./lib/audio/processors/AudioProcessor";
+  import { Sample } from "./lib/audio/engines/Sample";
+  import { Input } from "./lib/audio/engines/Input";
 
   let currentEngineIndex = 0;
   let engine = engines[currentEngineIndex];
+  let engineType: EngineType = engine.getType();
 
   const audioService = new AudioService();
 
@@ -34,9 +38,17 @@
   let isProcessed = false;
   let showProcessorPopup = false;
   let popupTimeout: ReturnType<typeof setTimeout> | null = null;
+  let isRecording = false;
+  let isDragOver = false;
 
   const allProcessors = getAllProcessors();
 
+  $: showDuration = engineType !== 'sample';
+  $: showRandomButton = engineType === 'generative';
+  $: showRecordButton = engineType === 'input';
+  $: showFileDropZone = engineType === 'sample' && !currentBuffer;
+  $: showMutateButton = engineType === 'generative' && !isProcessed && currentBuffer;
+
   onMount(() => {
     audioService.setVolume(volume);
     audioService.setPlaybackUpdateCallback((position) => {
@@ -157,7 +169,83 @@
   function switchEngine(index: number) {
     currentEngineIndex = index;
     engine = engines[index];
-    generateRandom();
+    engineType = engine.getType();
+    currentBuffer = null;
+    currentParams = null;
+    isProcessed = false;
+
+    if (engineType === 'generative') {
+      generateRandom();
+    }
+  }
+
+  async function handleFileInput(event: Event) {
+    const input = event.target as HTMLInputElement;
+    if (!input.files || input.files.length === 0) return;
+
+    const file = input.files[0];
+    await loadAudioFile(file);
+  }
+
+  async function loadAudioFile(file: File) {
+    if (!(engine instanceof Sample)) return;
+
+    try {
+      await engine.loadFile(file);
+      currentParams = engine.randomParams();
+      waveformColor = generateRandomColor();
+      isProcessed = false;
+      regenerateBuffer();
+    } catch (error) {
+      console.error('Failed to load audio file:', error);
+      alert(`Failed to load audio file: ${error}`);
+    }
+  }
+
+  async function recordAudio() {
+    if (!(engine instanceof Input)) return;
+    if (isRecording) return;
+
+    try {
+      isRecording = true;
+      await engine.record(duration);
+      currentParams = engine.randomParams();
+      waveformColor = generateRandomColor();
+      isProcessed = false;
+      regenerateBuffer();
+    } catch (error) {
+      console.error('Failed to record audio:', error);
+      alert(`Failed to record audio: ${error}`);
+    } finally {
+      isRecording = false;
+    }
+  }
+
+  function handleDrop(event: DragEvent) {
+    event.preventDefault();
+    isDragOver = false;
+
+    if (!event.dataTransfer) return;
+    const files = event.dataTransfer.files;
+    if (files.length === 0) return;
+
+    const file = files[0];
+    if (!file.type.startsWith('audio/')) {
+      alert('Please drop an audio file');
+      return;
+    }
+
+    loadAudioFile(file);
+  }
+
+  function handleDragOver(event: DragEvent) {
+    event.preventDefault();
+    isDragOver = true;
+  }
+
+  function handleDragLeave(event: DragEvent) {
+    event.preventDefault();
+    isDragOver = false;
   }
 
   async function closeModal() {
@@ -199,7 +287,7 @@
       case "arrowright":
         event.preventDefault();
         const durationIncrement = event.shiftKey ? 1 : 0.05;
-        duration = Math.min(8, duration + durationIncrement);
+        duration = Math.min(32, duration + durationIncrement);
         saveDuration(duration);
         break;
       case "arrowdown":
@@ -237,18 +325,20 @@
       {/each}
     </div>
     <div class="controls-group">
-      <div class="slider-control duration-slider">
-        <label for="duration">Duration: {duration.toFixed(2)}s</label>
-        <input
-          id="duration"
-          type="range"
-          min="0.05"
-          max="8"
-          step="0.01"
-          value={duration}
-          oninput={handleDurationChange}
-        />
-      </div>
+      {#if showDuration}
+        <div class="slider-control duration-slider">
+          <label for="duration">Duration: {duration.toFixed(2)}s</label>
+          <input
+            id="duration"
+            type="range"
+            min="0.05"
+            max="32"
+            step="0.01"
+            value={duration}
+            oninput={handleDurationChange}
+          />
+        </div>
+      {/if}
       <div class="slider-control">
         <label for="volume">Volume</label>
         <input
@@ -266,39 +356,75 @@
 
   <div class="main-area">
     <div class="waveform-container">
-      <WaveformDisplay
-        buffer={currentBuffer}
-        color={waveformColor}
-        {playbackPosition}
-        onclick={replaySound}
-      />
+      {#if showFileDropZone}
+        <div
+          class="file-drop-zone"
+          class:drag-over={isDragOver}
+          role="button"
+          tabindex="0"
+          ondrop={handleDrop}
+          ondragover={handleDragOver}
+          ondragleave={handleDragLeave}
+        >
+          <div class="drop-zone-content">
+            <h2>Drop an audio file here</h2>
+            <label for="file-input" class="file-input-label">
+              <input
+                id="file-input"
+                type="file"
+                accept="audio/*"
+                onchange={handleFileInput}
+                style="display: none;"
+              />
+              Choose a file
+            </label>
+          </div>
+        </div>
+      {:else}
+        <WaveformDisplay
+          buffer={currentBuffer}
+          color={waveformColor}
+          {playbackPosition}
+          onclick={replaySound}
+        />
+      {/if}
+
       <div class="bottom-controls">
-        <button onclick={generateRandom}>Random (R)</button>
-        {#if !isProcessed}
+        {#if showRandomButton}
+          <button onclick={generateRandom}>Random (R)</button>
+        {/if}
+        {#if showRecordButton}
+          <button onclick={recordAudio} disabled={isRecording}>
+            {isRecording ? 'Recording...' : 'Record'}
+          </button>
+        {/if}
+        {#if showMutateButton}
           <button onclick={mutate}>Mutate (M)</button>
         {/if}
-        <div
-          class="process-button-container"
-          role="group"
-          onmouseenter={handlePopupMouseEnter}
-          onmouseleave={handlePopupMouseLeave}
-        >
-          <button onclick={processSound}>Process (P)</button>
-          {#if showProcessorPopup}
-            <div class="processor-popup">
-              {#each allProcessors as processor}
-                <button
-                  class="processor-tile"
-                  data-description={processor.getDescription()}
-                  onclick={() => processWithSpecificProcessor(processor)}
-                >
-                  {processor.getName()}
-                </button>
-              {/each}
-            </div>
-          {/if}
-        </div>
-        <button onclick={download}>Download (D)</button>
+        {#if currentBuffer}
+          <div
+            class="process-button-container"
+            role="group"
+            onmouseenter={handlePopupMouseEnter}
+            onmouseleave={handlePopupMouseLeave}
+          >
+            <button onclick={processSound}>Process (P)</button>
+            {#if showProcessorPopup}
+              <div class="processor-popup">
+                {#each allProcessors as processor}
+                  <button
+                    class="processor-tile"
+                    data-description={processor.getDescription()}
+                    onclick={() => processWithSpecificProcessor(processor)}
+                  >
+                    {processor.getName()}
+                  </button>
+                {/each}
+              </div>
+            {/if}
+          </div>
+          <button onclick={download}>Download (D)</button>
+        {/if}
       </div>
     </div>
     <div class="vu-meter-container">
@@ -601,9 +727,9 @@
     padding: 0.75rem;
     z-index: 1000;
     display: grid;
-    grid-template-columns: repeat(3, 1fr);
+    grid-template-columns: repeat(4, 1fr);
     gap: 0.5rem;
-    width: 450px;
+    width: 600px;
     margin-bottom: 0.5rem;
   }
 
@@ -652,4 +778,56 @@
   .processor-tile:hover::after {
     opacity: 1;
   }
+
+  .file-drop-zone {
+    width: 100%;
+    height: 100%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border: 2px dashed #444;
+    background-color: #0a0a0a;
+    transition: all 0.2s;
+  }
+
+  .file-drop-zone.drag-over {
+    border-color: #646cff;
+    background-color: #1a1a1a;
+  }
+
+  .drop-zone-content {
+    text-align: center;
+    color: #ccc;
+  }
+
+  .drop-zone-content h2 {
+    font-size: 1.5rem;
+    margin-bottom: 1rem;
+    color: #fff;
+  }
+
+  .drop-zone-content p {
+    margin: 1rem 0;
+    font-size: 1rem;
+  }
+
+  .file-input-label {
+    display: inline-block;
+    padding: 0.75rem 1.5rem;
+    background-color: #646cff;
+    color: #fff;
+    border: 1px solid #646cff;
+    cursor: pointer;
+    transition: background-color 0.2s;
+    font-size: 1rem;
+  }
+
+  .file-input-label:hover {
+    background-color: #535bf2;
+  }
+
+  button:disabled {
+    opacity: 0.5;
+    cursor: not-allowed;
+  }
 </style>

src/lib/audio/engines/Benjolin.ts

@@ -69,6 +69,10 @@ export class Benjolin implements SynthEngine<BenjolinParams> {
     return 'Some kind of rungler/benjolin inspired generator';
   }
 
+  getType() {
+    return 'generative' as const;
+  }
+
   generate(params: BenjolinParams, sampleRate: number, duration: number): [Float32Array, Float32Array] {
     const numSamples = Math.floor(duration * sampleRate);
     const left = new Float32Array(numSamples);

src/lib/audio/engines/DubSiren.ts

@@ -63,6 +63,10 @@ export class DubSiren implements SynthEngine<DubSirenParams> {
     return 'Siren generator with pitch sweeps, anti-aliased oscillators and stable filtering';
   }
 
+  getType() {
+    return 'generative' as const;
+  }
+
   generate(params: DubSirenParams, sampleRate: number, duration: number): [Float32Array, Float32Array] {
     const numSamples = Math.floor(sampleRate * duration);
     const leftBuffer = new Float32Array(numSamples);

src/lib/audio/engines/FourOpFM.ts

@@ -71,6 +71,10 @@ export class FourOpFM implements SynthEngine<FourOpFMParams> {
     return 'Four-operator FM synthesis with multiple algorithms, envelope curves, and LFO waveforms';
   }
 
+  getType() {
+    return 'generative' as const;
+  }
+
   generate(params: FourOpFMParams, sampleRate: number, duration: number): [Float32Array, Float32Array] {
     const numSamples = Math.floor(sampleRate * duration);
     const leftBuffer = new Float32Array(numSamples);

src/lib/audio/engines/Input.ts

@@ -0,0 +1,120 @@
+import type { SynthEngine } from './SynthEngine';
+
+interface InputParams {
+  recorded: boolean;
+}
+
+export class Input implements SynthEngine<InputParams> {
+  private leftChannel: Float32Array | null = null;
+  private rightChannel: Float32Array | null = null;
+  private recordedSampleRate: number = 44100;
+
+  getName(): string {
+    return 'Input';
+  }
+
+  getDescription(): string {
+    return 'Record audio from your microphone or default input device';
+  }
+
+  getType() {
+    return 'input' as const;
+  }
+
+  async record(duration: number): Promise<void> {
+    const stream = await navigator.mediaDevices.getUserMedia({
+      audio: {
+        echoCancellation: false,
+        noiseSuppression: false,
+        autoGainControl: false
+      }
+    });
+
+    const audioContext = new AudioContext();
+    this.recordedSampleRate = audioContext.sampleRate;
+
+    const source = audioContext.createMediaStreamSource(stream);
+    const destination = audioContext.createMediaStreamDestination();
+    source.connect(destination);
+
+    const mediaRecorder = new MediaRecorder(destination.stream);
+    const chunks: Blob[] = [];
+
+    mediaRecorder.ondataavailable = (e) => {
+      if (e.data.size > 0) {
+        chunks.push(e.data);
+      }
+    };
+
+    const recordingComplete = new Promise<void>((resolve) => {
+      mediaRecorder.onstop = async () => {
+        const blob = new Blob(chunks, { type: 'audio/webm' });
+        const arrayBuffer = await blob.arrayBuffer();
+
+        try {
+          const audioBuffer = await audioContext.decodeAudioData(arrayBuffer);
+
+          if (audioBuffer.numberOfChannels === 1) {
+            this.leftChannel = audioBuffer.getChannelData(0);
+            this.rightChannel = audioBuffer.getChannelData(0);
+          } else {
+            this.leftChannel = audioBuffer.getChannelData(0);
+            this.rightChannel = audioBuffer.getChannelData(1);
+          }
+        } catch (error) {
+          throw new Error(`Failed to decode recorded audio: ${error}`);
+        } finally {
+          stream.getTracks().forEach(track => track.stop());
+          await audioContext.close();
+        }
+
+        resolve();
+      };
+    });
+
+    mediaRecorder.start();
+
+    setTimeout(() => {
+      if (mediaRecorder.state === 'recording') {
+        mediaRecorder.stop();
+      }
+    }, duration * 1000);
+
+    await recordingComplete;
+  }
+
+  generate(_params: InputParams, sampleRate: number, _duration: number): [Float32Array, Float32Array] {
+    if (!this.leftChannel || !this.rightChannel) {
+      throw new Error('No audio recorded. Please record audio first.');
+    }
+
+    if (this.recordedSampleRate === sampleRate) {
+      return [this.leftChannel.slice(), this.rightChannel.slice()];
+    }
+
+    const resampleRatio = sampleRate / this.recordedSampleRate;
+    const newLength = Math.floor(this.leftChannel.length * resampleRatio);
+    const leftResampled = new Float32Array(newLength);
+    const rightResampled = new Float32Array(newLength);
+
+    for (let i = 0; i < newLength; i++) {
+      const sourceIndex = i / resampleRatio;
+      const index0 = Math.floor(sourceIndex);
+      const index1 = Math.min(index0 + 1, this.leftChannel.length - 1);
+      const fraction = sourceIndex - index0;
+
+      leftResampled[i] = this.leftChannel[index0] * (1 - fraction) + this.leftChannel[index1] * fraction;
+      rightResampled[i] = this.rightChannel[index0] * (1 - fraction) + this.rightChannel[index1] * fraction;
+    }
+
+    return [leftResampled, rightResampled];
+  }
+
+  randomParams(): InputParams {
+    return { recorded: this.leftChannel !== null && this.rightChannel !== null };
+  }
+
+  mutateParams(params: InputParams): InputParams {
+    return params;
+  }
+}

src/lib/audio/engines/NoiseDrum.ts

@@ -46,6 +46,10 @@ export class NoiseDrum implements SynthEngine {
     return 'Versatile noise-based percussion synthesizer inspired by classic drum machines';
   }
 
+  getType() {
+    return 'generative' as const;
+  }
+
   randomParams(): NoiseDrumParams {
     // Intelligently bias parameter ranges to create diverse percussion types
     const filterBias = Math.random();

src/lib/audio/engines/Ring.ts

@@ -78,6 +78,10 @@ export class Ring implements SynthEngine<RingParams> {
     return 'Complex ring modulator with dual modulators, multiple LFOs, feedback, and evolving timbres';
   }
 
+  getType() {
+    return 'generative' as const;
+  }
+
   generate(params: RingParams, sampleRate: number, duration: number): [Float32Array, Float32Array] {
     const numSamples = Math.floor(sampleRate * duration);
     const leftBuffer = new Float32Array(numSamples);

src/lib/audio/engines/Sample.ts

@@ -0,0 +1,76 @@
+import type { SynthEngine } from './SynthEngine';
+
+interface SampleParams {
+  loaded: boolean;
+}
+
+export class Sample implements SynthEngine<SampleParams> {
+  private leftChannel: Float32Array | null = null;
+  private rightChannel: Float32Array | null = null;
+  private sampleRate: number = 44100;
+
+  getName(): string {
+    return 'Sample';
+  }
+
+  getDescription(): string {
+    return 'Load audio files from disk and process them';
+  }
+
+  getType() {
+    return 'sample' as const;
+  }
+
+  async loadFile(file: File): Promise<void> {
+    const arrayBuffer = await file.arrayBuffer();
+    const audioContext = new AudioContext();
+    const audioBuffer = await audioContext.decodeAudioData(arrayBuffer);
+
+    this.sampleRate = audioBuffer.sampleRate;
+
+    if (audioBuffer.numberOfChannels === 1) {
+      this.leftChannel = audioBuffer.getChannelData(0);
+      this.rightChannel = audioBuffer.getChannelData(0);
+    } else {
+      this.leftChannel = audioBuffer.getChannelData(0);
+      this.rightChannel = audioBuffer.getChannelData(1);
+    }
+
+    await audioContext.close();
+  }
+
+  generate(_params: SampleParams, sampleRate: number, _duration: number): [Float32Array, Float32Array] {
+    if (!this.leftChannel || !this.rightChannel) {
+      throw new Error('No audio file loaded. Please load a file first.');
+    }
+
+    if (this.sampleRate === sampleRate) {
+      return [this.leftChannel.slice(), this.rightChannel.slice()];
+    }
+
+    const resampleRatio = sampleRate / this.sampleRate;
+    const newLength = Math.floor(this.leftChannel.length * resampleRatio);
+    const leftResampled = new Float32Array(newLength);
+    const rightResampled = new Float32Array(newLength);
+
+    for (let i = 0; i < newLength; i++) {
+      const sourceIndex = i / resampleRatio;
+      const index0 = Math.floor(sourceIndex);
+      const index1 = Math.min(index0 + 1, this.leftChannel.length - 1);
+      const fraction = sourceIndex - index0;
+
+      leftResampled[i] = this.leftChannel[index0] * (1 - fraction) + this.leftChannel[index1] * fraction;
+      rightResampled[i] = this.rightChannel[index0] * (1 - fraction) + this.rightChannel[index1] * fraction;
+    }
+
+    return [leftResampled, rightResampled];
+  }
+
+  randomParams(): SampleParams {
+    return { loaded: this.leftChannel !== null && this.rightChannel !== null };
+  }
+
+  mutateParams(params: SampleParams): SampleParams {
+    return params;
+  }
+}

src/lib/audio/engines/SynthEngine.ts

@@ -2,9 +2,13 @@
 // The duration parameter should be used to scale time-based parameters (envelopes, LFOs, etc.)
 // Time-based parameters should be stored as ratios (0-1) and scaled by duration during generation
 // Engines must generate stereo output: [leftChannel, rightChannel]
+
+export type EngineType = 'generative' | 'sample' | 'input';
+
 export interface SynthEngine<T = any> {
   getName(): string;
   getDescription(): string;
+  getType(): EngineType;
   generate(params: T, sampleRate: number, duration: number): [Float32Array, Float32Array];
   randomParams(): T;
   mutateParams(params: T, mutationAmount?: number): T;

src/lib/audio/engines/ZzfxEngine.ts

@@ -34,6 +34,10 @@ export class ZzfxEngine implements SynthEngine<ZzfxParams> {
     return 'Retro 8-bit sound effects generator with pitch bending, noise, and bit crushing';
   }
 
+  getType() {
+    return 'generative' as const;
+  }
+
   generate(params: ZzfxParams, sampleRate: number, duration: number): [Float32Array, Float32Array] {
     // ZZFX uses 44100 sample rate internally
     const zzfxSampleRate = 44100;

src/lib/audio/engines/registry.ts

@@ -5,8 +5,12 @@ import { Benjolin } from './Benjolin';
 import { ZzfxEngine } from './ZzfxEngine';
 import { NoiseDrum } from './NoiseDrum';
 import { Ring } from './Ring';
+import { Sample } from './Sample';
+import { Input } from './Input';
 
 export const engines: SynthEngine[] = [
+  new Sample(),
+  new Input(),
   new FourOpFM(),
   new DubSiren(),
   new Benjolin(),

src/lib/audio/processors/BitCrusher.ts

@@ -0,0 +1,29 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class BitCrusher implements AudioProcessor {
+  getName(): string {
+    return "Bit Crusher";
+  }
+
+  getDescription(): string {
+    return "Reduces bit depth for lo-fi digital distortion";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const bitDepth = Math.floor(Math.random() * 6) + 3;
+    const levels = Math.pow(2, bitDepth);
+
+    const newLeft = new Float32Array(leftChannel.length);
+    const newRight = new Float32Array(rightChannel.length);
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      newLeft[i] = Math.floor(leftChannel[i] * levels) / levels;
+      newRight[i] = Math.floor(rightChannel[i] * levels) / levels;
+    }
+
+    return [newLeft, newRight];
+  }
+}

src/lib/audio/processors/Compressor.ts

@@ -0,0 +1,68 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class Compressor implements AudioProcessor {
+  getName(): string {
+    return "Compressor";
+  }
+
+  getDescription(): string {
+    return "Reduces dynamic range by taming peaks with makeup gain";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const sampleRate = 44100;
+    const thresholdDb = -12 - Math.random() * 6;
+    const threshold = Math.pow(10, thresholdDb / 20);
+    const ratio = 4 + Math.random() * 4;
+    const attackMs = 1 + Math.random() * 4;
+    const releaseMs = 50 + Math.random() * 100;
+
+    const attackCoeff = Math.exp(-1 / (sampleRate * (attackMs / 1000)));
+    const releaseCoeff = Math.exp(-1 / (sampleRate * (releaseMs / 1000)));
+
+    const newLeft = new Float32Array(leftChannel.length);
+    const newRight = new Float32Array(rightChannel.length);
+
+    let envelopeL = 0;
+    let envelopeR = 0;
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      const inputL = Math.abs(leftChannel[i]);
+      const inputR = Math.abs(rightChannel[i]);
+
+      envelopeL = inputL > envelopeL
+        ? attackCoeff * envelopeL + (1 - attackCoeff) * inputL
+        : releaseCoeff * envelopeL + (1 - releaseCoeff) * inputL;
+
+      envelopeR = inputR > envelopeR
+        ? attackCoeff * envelopeR + (1 - attackCoeff) * inputR
+        : releaseCoeff * envelopeR + (1 - releaseCoeff) * inputR;
+
+      const peakEnvelope = Math.max(envelopeL, envelopeR);
+
+      let gainReduction = 1;
+      if (peakEnvelope > threshold) {
+        const overThresholdDb = 20 * Math.log10(peakEnvelope / threshold);
+        const compressedDb = overThresholdDb / ratio;
+        const reductionDb = overThresholdDb - compressedDb;
+        gainReduction = Math.pow(10, -reductionDb / 20);
+      }
+
+      newLeft[i] = leftChannel[i] * gainReduction;
+      newRight[i] = rightChannel[i] * gainReduction;
+    }
+
+    const makeupGainDb = Math.abs(thresholdDb) * 0.5;
+    const makeupGain = Math.pow(10, makeupGainDb / 20);
+
+    for (let i = 0; i < newLeft.length; i++) {
+      newLeft[i] *= makeupGain;
+      newRight[i] *= makeupGain;
+    }
+
+    return [newLeft, newRight];
+  }
+}

src/lib/audio/processors/HaasEffect.ts

@@ -0,0 +1,39 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class HaasEffect implements AudioProcessor {
+  getName(): string {
+    return "Haas Effect";
+  }
+
+  getDescription(): string {
+    return "Creates stereo width with micro-delay (precedence effect)";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const sampleRate = 44100;
+    const delayMs = 5 + Math.random() * 25;
+    const delaySamples = Math.floor((delayMs / 1000) * sampleRate);
+    const attenuationDb = -1 - Math.random() * 2;
+    const attenuation = Math.pow(10, attenuationDb / 20);
+
+    const newLeft = new Float32Array(leftChannel.length);
+    const newRight = new Float32Array(rightChannel.length);
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      newLeft[i] = leftChannel[i];
+    }
+
+    for (let i = 0; i < rightChannel.length; i++) {
+      if (i >= delaySamples) {
+        newRight[i] = rightChannel[i - delaySamples] * attenuation;
+      } else {
+        newRight[i] = 0;
+      }
+    }
+
+    return [newLeft, newRight];
+  }
+}

src/lib/audio/processors/Normalize.ts

@@ -0,0 +1,39 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class Normalize implements AudioProcessor {
+  getName(): string {
+    return "Normalize";
+  }
+
+  getDescription(): string {
+    return "Normalizes audio to maximum amplitude without clipping";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    let maxAmplitude = 0;
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      maxAmplitude = Math.max(maxAmplitude, Math.abs(leftChannel[i]));
+      maxAmplitude = Math.max(maxAmplitude, Math.abs(rightChannel[i]));
+    }
+
+    if (maxAmplitude === 0) {
+      return [leftChannel, rightChannel];
+    }
+
+    const gain = 1.0 / maxAmplitude;
+
+    const newLeft = new Float32Array(leftChannel.length);
+    const newRight = new Float32Array(rightChannel.length);
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      newLeft[i] = leftChannel[i] * gain;
+      newRight[i] = rightChannel[i] * gain;
+    }
+
+    return [newLeft, newRight];
+  }
+}

src/lib/audio/processors/OctaveDown.ts

@@ -0,0 +1,48 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class OctaveDown implements AudioProcessor {
+  getName(): string {
+    return "Octave Down";
+  }
+
+  getDescription(): string {
+    return "Shifts pitch down one octave by halving playback rate";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const inputLength = leftChannel.length;
+    const outputLength = inputLength * 2;
+
+    const newLeft = new Float32Array(outputLength);
+    const newRight = new Float32Array(outputLength);
+
+    for (let i = 0; i < outputLength; i++) {
+      const sourceIndex = i / 2;
+      const lowerIndex = Math.floor(sourceIndex);
+      const upperIndex = Math.min(lowerIndex + 1, inputLength - 1);
+      const fraction = sourceIndex - lowerIndex;
+
+      newLeft[i] = leftChannel[lowerIndex] * (1 - fraction) + leftChannel[upperIndex] * fraction;
+      newRight[i] = rightChannel[lowerIndex] * (1 - fraction) + rightChannel[upperIndex] * fraction;
+    }
+
+    this.applyFadeOut(newLeft, newRight);
+
+    return [newLeft, newRight];
+  }
+
+  private applyFadeOut(left: Float32Array, right: Float32Array): void {
+    const fadeLength = Math.min(Math.floor(left.length * 0.05), 2205);
+    const fadeStart = left.length - fadeLength;
+
+    for (let i = 0; i < fadeLength; i++) {
+      const gain = 1 - (i / fadeLength);
+      const index = fadeStart + i;
+      left[index] *= gain;
+      right[index] *= gain;
+    }
+  }
+}

src/lib/audio/processors/OctaveUp.ts

@@ -0,0 +1,48 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class OctaveUp implements AudioProcessor {
+  getName(): string {
+    return "Octave Up";
+  }
+
+  getDescription(): string {
+    return "Shifts pitch up one octave by doubling playback rate";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const inputLength = leftChannel.length;
+    const outputLength = Math.floor(inputLength / 2);
+
+    const newLeft = new Float32Array(outputLength);
+    const newRight = new Float32Array(outputLength);
+
+    for (let i = 0; i < outputLength; i++) {
+      const sourceIndex = i * 2;
+      const lowerIndex = Math.floor(sourceIndex);
+      const upperIndex = Math.min(lowerIndex + 1, inputLength - 1);
+      const fraction = sourceIndex - lowerIndex;
+
+      newLeft[i] = leftChannel[lowerIndex] * (1 - fraction) + leftChannel[upperIndex] * fraction;
+      newRight[i] = rightChannel[lowerIndex] * (1 - fraction) + rightChannel[upperIndex] * fraction;
+    }
+
+    this.applyFadeOut(newLeft, newRight);
+
+    return [newLeft, newRight];
+  }
+
+  private applyFadeOut(left: Float32Array, right: Float32Array): void {
+    const fadeLength = Math.min(Math.floor(left.length * 0.05), 2205);
+    const fadeStart = left.length - fadeLength;
+
+    for (let i = 0; i < fadeLength; i++) {
+      const gain = 1 - (i / fadeLength);
+      const index = fadeStart + i;
+      left[index] *= gain;
+      right[index] *= gain;
+    }
+  }
+}

src/lib/audio/processors/PhaseInverter.ts

@@ -0,0 +1,31 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class PhaseInverter implements AudioProcessor {
+  getName(): string {
+    return "Phase Inverter";
+  }
+
+  getDescription(): string {
+    return "Inverts polarity of one or both channels";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const mode = Math.floor(Math.random() * 3);
+
+    const newLeft = new Float32Array(leftChannel.length);
+    const newRight = new Float32Array(rightChannel.length);
+
+    const invertLeft = mode === 0 || mode === 2;
+    const invertRight = mode === 1 || mode === 2;
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      newLeft[i] = invertLeft ? -leftChannel[i] : leftChannel[i];
+      newRight[i] = invertRight ? -rightChannel[i] : rightChannel[i];
+    }
+
+    return [newLeft, newRight];
+  }
+}

src/lib/audio/processors/Phaser.ts

@@ -0,0 +1,141 @@
+import type { AudioProcessor } from './AudioProcessor';
+
+export class Phaser implements AudioProcessor {
+  private readonly sampleRate = 44100;
+
+  getName(): string {
+    return 'Phaser';
+  }
+
+  getDescription(): string {
+    return 'Classic phaser effect with sweeping all-pass filters for swirling, spacey sounds';
+  }
+
+  process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): [Float32Array, Float32Array] {
+    const length = leftChannel.length;
+
+    const numStages = Math.floor(Math.random() * 4) + 4; // 4-7 all-pass filter stages
+    const lfoRate = Math.random() * 2.5 + 0.2; // 0.2-2.7 Hz LFO rate (pushed higher sometimes)
+    const lfoDepth = Math.random() * 0.4 + 0.5; // 50-90% modulation depth
+    const feedback = Math.random() * 0.7 + 0.2; // 20-90% feedback (increased range)
+    const mix = Math.random() * 0.4 + 0.4; // 40-80% wet
+    const minFreq = Math.random() * 200 + 200; // 200-400 Hz minimum frequency
+    const maxFreq = Math.random() * 1500 + 1500; // 1500-3000 Hz maximum frequency
+    const stereoPhaseOffset = Math.random() * Math.PI; // Random stereo offset
+
+    const leftOut = new Float32Array(length);
+    const rightOut = new Float32Array(length);
+
+    const leftStates = this.createFilterStates(numStages);
+    const rightStates = this.createFilterStates(numStages);
+
+    let leftFeedback = 0;
+    let rightFeedback = 0;
+
+    for (let i = 0; i < length; i++) {
+      const t = i / this.sampleRate;
+      const lfoLeft = Math.sin(2 * Math.PI * lfoRate * t);
+      const lfoRight = Math.sin(2 * Math.PI * lfoRate * t + stereoPhaseOffset);
+
+      const freqLeft = this.mapLfoToFreq(lfoLeft, minFreq, maxFreq, lfoDepth);
+      const freqRight = this.mapLfoToFreq(lfoRight, minFreq, maxFreq, lfoDepth);
+
+      let leftProcessed = leftChannel[i] + leftFeedback * feedback;
+      let rightProcessed = rightChannel[i] + rightFeedback * feedback;
+
+      for (let stage = 0; stage < numStages; stage++) {
+        leftProcessed = this.allPassFilter(
+          leftProcessed,
+          freqLeft,
+          leftStates[stage]
+        );
+        rightProcessed = this.allPassFilter(
+          rightProcessed,
+          freqRight,
+          rightStates[stage]
+        );
+      }
+
+      leftFeedback = leftProcessed;
+      rightFeedback = rightProcessed;
+
+      const dryGain = Math.sqrt(1 - mix);
+      const wetGain = Math.sqrt(mix);
+
+      leftOut[i] = leftChannel[i] * dryGain + leftProcessed * wetGain;
+      rightOut[i] = rightChannel[i] * dryGain + rightProcessed * wetGain;
+
+      leftOut[i] = this.softClip(leftOut[i]);
+      rightOut[i] = this.softClip(rightOut[i]);
+    }
+
+    this.normalizeOutput(leftOut, rightOut);
+
+    return [leftOut, rightOut];
+  }
+
+  private createFilterStates(numStages: number): Array<{ x1: number; y1: number }> {
+    const states = [];
+    for (let i = 0; i < numStages; i++) {
+      states.push({ x1: 0, y1: 0 });
+    }
+    return states;
+  }
+
+  private allPassFilter(
+    input: number,
+    frequency: number,
+    state: { x1: number; y1: number }
+  ): number {
+    const c = (Math.tan(Math.PI * frequency / this.sampleRate) - 1) /
+              (Math.tan(Math.PI * frequency / this.sampleRate) + 1);
+
+    const output = c * input + state.x1 - c * state.y1;
+
+    state.x1 = input;
+    state.y1 = output;
+
+    return output;
+  }
+
+  private mapLfoToFreq(
+    lfo: number,
+    minFreq: number,
+    maxFreq: number,
+    depth: number
+  ): number {
+    const normalizedLfo = (lfo + 1) * 0.5;
+    const modulatedLfo = normalizedLfo * depth + (1 - depth) * 0.5;
+    return minFreq + (maxFreq - minFreq) * modulatedLfo;
+  }
+
+  private softClip(sample: number): number {
+    const threshold = 0.95;
+    if (Math.abs(sample) < threshold) {
+      return sample;
+    }
+    const sign = sample < 0 ? -1 : 1;
+    const abs = Math.abs(sample);
+    return sign * (threshold + (1 - threshold) * Math.tanh((abs - threshold) / (1 - threshold)));
+  }
+
+  private normalizeOutput(leftOut: Float32Array, rightOut: Float32Array): void {
+    let maxPeak = 0;
+    for (let i = 0; i < leftOut.length; i++) {
+      maxPeak = Math.max(maxPeak, Math.abs(leftOut[i]), Math.abs(rightOut[i]));
+    }
+
+    if (maxPeak > 0.01) {
+      const targetPeak = 0.95;
+      const normalizeGain = Math.min(1.0, targetPeak / maxPeak);
+
+      for (let i = 0; i < leftOut.length; i++) {
+        leftOut[i] *= normalizeGain;
+        rightOut[i] *= normalizeGain;
+      }
+    }
+  }
+}

src/lib/audio/processors/RingModulator.ts

@@ -0,0 +1,43 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class RingModulator implements AudioProcessor {
+  getName(): string {
+    return "Ring Modulator";
+  }
+
+  getDescription(): string {
+    return "Frequency modulation for metallic, bell-like tones";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const sampleRate = 44100;
+    const carrierFreq = 20 + Math.random() * 400;
+    const mix = 0.5 + Math.random() * 0.5;
+
+    const freqModDepth = Math.random() * 50;
+    const freqModRate = 0.1 + Math.random() * 2;
+
+    const newLeft = new Float32Array(leftChannel.length);
+    const newRight = new Float32Array(rightChannel.length);
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      const t = i / sampleRate;
+
+      const modulation = Math.sin(2 * Math.PI * freqModRate * t);
+      const modulatedFreq = carrierFreq + (modulation * freqModDepth);
+
+      const carrier = Math.sin(2 * Math.PI * modulatedFreq * t);
+
+      const modulatedL = leftChannel[i] * carrier;
+      const modulatedR = rightChannel[i] * carrier;
+
+      newLeft[i] = leftChannel[i] * (1 - mix) + modulatedL * mix;
+      newRight[i] = rightChannel[i] * (1 - mix) + modulatedR * mix;
+    }
+
+    return [newLeft, newRight];
+  }
+}

src/lib/audio/processors/StereoWidener.ts

@@ -0,0 +1,31 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class StereoWidener implements AudioProcessor {
+  getName(): string {
+    return "Stereo Widener";
+  }
+
+  getDescription(): string {
+    return "Expands stereo field using mid-side processing";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const widthFactor = 1.5 + Math.random() * 1.5;
+
+    const newLeft = new Float32Array(leftChannel.length);
+    const newRight = new Float32Array(rightChannel.length);
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      const mid = (leftChannel[i] + rightChannel[i]) * 0.5;
+      const side = (leftChannel[i] - rightChannel[i]) * 0.5 * widthFactor;
+
+      newLeft[i] = mid + side;
+      newRight[i] = mid - side;
+    }
+
+    return [newLeft, newRight];
+  }
+}

src/lib/audio/processors/Waveshaper.ts

@@ -0,0 +1,57 @@
+import type { AudioProcessor } from "./AudioProcessor";
+
+export class Waveshaper implements AudioProcessor {
+  getName(): string {
+    return "Waveshaper";
+  }
+
+  getDescription(): string {
+    return "Transfer function distortion with various curve shapes";
+  }
+
+  async process(
+    leftChannel: Float32Array,
+    rightChannel: Float32Array
+  ): Promise<[Float32Array, Float32Array]> {
+    const shapeType = Math.floor(Math.random() * 4);
+    const drive = 1 + Math.random() * 4;
+    const mix = 0.5 + Math.random() * 0.5;
+
+    const newLeft = new Float32Array(leftChannel.length);
+    const newRight = new Float32Array(rightChannel.length);
+
+    for (let i = 0; i < leftChannel.length; i++) {
+      const wetL = this.applyShape(leftChannel[i] * drive, shapeType);
+      const wetR = this.applyShape(rightChannel[i] * drive, shapeType);
+
+      newLeft[i] = leftChannel[i] * (1 - mix) + wetL * mix;
+      newRight[i] = rightChannel[i] * (1 - mix) + wetR * mix;
+    }
+
+    return [newLeft, newRight];
+  }
+
+  private applyShape(x: number, shapeType: number): number {
+    switch (shapeType) {
+      case 0:
+        return Math.tanh(x);
+
+      case 1:
+        return x / (1 + Math.abs(x));
+
+      case 2: {
+        const clipped = Math.max(-1, Math.min(1, x));
+        return clipped - (clipped * clipped * clipped) / 3;
+      }
+
+      case 3: {
+        if (x > 1) return 1;
+        if (x < -1) return -1;
+        return 1.5 * x - 0.5 * x * x * x;
+      }
+
+      default:
+        return x;
+    }
+  }
+}

src/lib/audio/processors/registry.ts

@@ -11,6 +11,17 @@ import { MicroPitch } from './MicroPitch';
 import { SpectralBlur } from './SpectralBlur';
 import { SpectralShift } from './SpectralShift';
 import { ConvolutionReverb } from './ConvolutionReverb';
+import { Phaser } from './Phaser';
+import { OctaveDown } from './OctaveDown';
+import { OctaveUp } from './OctaveUp';
+import { Normalize } from './Normalize';
+import { BitCrusher } from './BitCrusher';
+import { StereoWidener } from './StereoWidener';
+import { HaasEffect } from './HaasEffect';
+import { PhaseInverter } from './PhaseInverter';
+import { Compressor } from './Compressor';
+import { RingModulator } from './RingModulator';
+import { Waveshaper } from './Waveshaper';
 
 const processors: AudioProcessor[] = [
   new SegmentShuffler(),
@@ -25,6 +36,17 @@ const processors: AudioProcessor[] = [
   new SpectralBlur(),
   new SpectralShift(),
   new ConvolutionReverb(),
+  new Phaser(),
+  new OctaveDown(),
+  new OctaveUp(),
+  new Normalize(),
+  new BitCrusher(),
+  new StereoWidener(),
+  new HaasEffect(),
+  new PhaseInverter(),
+  new Compressor(),
+  new RingModulator(),
+  new Waveshaper(),
 ];
 
 export function getRandomProcessor(): AudioProcessor {