Tools:
Browser-based audio manipulation tool using WEB AUDIO API

http://browsergrains.surge.sh/

OR

https://kenneth-rakentine.github.io/Grains/

1. Drop an audio file into the import window, or click inside to open file browser
2. Press [SPACEBAR] (or 'START' on-screen button) to begin audio playback
3. Use the numeric keys (0-9) to change the start position of the audio file and scan through the waveform manually
4. Use arrow keys (←/→) for fine position navigation
5. Press and hold the alphabetical keys to play the audio chromatically across 3 octaves:

Q-P: Upper octave
A-L: Middle octave
Z-M: Lower octave

Use RESET button to restore all parameters to defaults
Use MUTE button to toggle audio output
Use LOOP button to enable/disable looping at current position
Use WARP button to enable/disable micro-loop warping effect at current position

• Load audio file and start playing with granular synthesis
• Press REC button (🔴)
• Grind your sound into dust particles - everything you hear gets recorded in real-time
• Press STOP to finish recording
• File downloads automatically as grains_[timestamp].webm format
• Compatible with all modern browsers supporting WebM audio
• Use format conversion software or CloudConvert in your browser to convert .webm files to .mp3 for compatibility with other media players: https://cloudconvert.com/webm-to-mp3

GRANULAR ENGINE
Grain Size (10-200ms) - Length of each audio "grain" particle
Density (1-16) - Number of simultaneous grains generated
Window Scan (0-100%) - Random deviation range from start position
Grain Shape - 5 envelope types: Blackman, Hanning, Down-Ramp, ExpoDec, Sine
Time Stretch (0.1-4x) - Playback speed without pitch change

ARPEGGIATOR
3x3 Grid - 9-step clickable pattern grid for arpeggio sequence
Scale Selection - Chromatic, Major, Minor, Dorian, Phrygian, Mixolydian
Rate (0.5-20Hz) - Arpeggio clock speed driven by sine wave LFO
Squeeze (0-100%) - LFO waveshaping for rhythmic timing variations
START/STOP - Enable/disable arpeggiator (triggers when chromatic keys pressed)

• Activate block to enable note per-scale
  
• Inactive blocks skip corresponding scale note
  
• Active grid number dictates arp pattern length
  
• Press letter key on keyboard OR on-screen chromatic letter buttons beneath oscilloscope to trigger root note arpeggiation through scale according to scale note-select grid
  

BANDPASS FILTER & LFO
Frequency (100-8000Hz) - Resonant bandpass filter center frequency
Resonance (0.1-3) - Filter resonance/bandwidth
LFO Speed (0.1-10Hz) - Modulation rate for filter frequency
LFO Depth (0-100%) - Modulation intensity
LFO Shape - Sine, Triangle, Sawtooth, Square waveforms

NOTCH FILTER
Filter Freq (100-8000Hz) - Notch filter center frequency
Bandwidth (0.1-30) - Notch filter Q/bandwidth (most effective closer to 0%)
Wet Mix (0-100%) - Notch filter effect blend
LFO Rate (0.01-20Hz) - Filter frequency modulation rate
LFO Depth (0-100%) - Filter frequency modulation depth

8-BAND VOCODER
8 Frequency Bands - Individual gain control for 200Hz, 400Hz, 800Hz, 1.2kHz, 1.6kHz, 2.4kHz, 3.2kHz, 4.8kHz
Vocoder Mix (0-100%) - Blend between dry and vocoded signal

WAVEFOLDER & RING MODULATOR
Fold Amount (0-100%) - Harmonic distortion intensity
Ring Mod Source - Oscillator, Noise, or Grains modulation
Ring Mod Frequency (20-2000Hz) - Oscillator frequency for ring modulation
Ring Mod Mix (0-100%) - Effect blend amount

SPECTRAL FREEZE & PHASER
Freeze Amount (0-100%) - Spectral freezing intensity using delay feedback
Spectral Resonance (0-100%) - Resonant filter coloration within freeze effect
Phaser Rate (0.1-10Hz) - 12-stage phaser LFO speed
Phaser Depth (0-100%) - Frequency sweep range
Feedback (0-90%) - Phaser resonance amount
Gain Boost (0.5-3x) - Output amplification with harmonic saturation
Phaser Wet Mix (0-100%) - Phaser effect blend amount

CHROMATIC ENVELOPE
5-Stage Envelope - Attack, Decay, Sustain, Release, and Hold parameters
Loop Depth (0-100%) - Overall envelope modulation intensity
Loop Rate - Frequency of looping envelope
Loop OFF/ON - Enable/disable envelope looping

WARP MODULE
WARP Toggle - Enable/disable high-frequency micro-loop effect
Loop Rate (1-100Hz) - Micro-loop repetition speed
Start Point (0-20ms) - Offset within micro-loop section
Start LFO Speed (0.1-10Hz) - Start point modulation rate
Start LFO Depth (0-100%) - Start point modulation intensity
Loop Length (1-20ms) - Duration of micro-loop section
Length LFO Speed (0.1-10Hz) - Loop length modulation rate
Length LFO Depth (0-100%) - Loop length modulation intensity

3D PANNER & FREQUENCY SHIFTER
X-Axis Depth (0-100%) - Horizontal movement range in binaural field
Y-Axis Range (0-100%) - Vertical movement range
Rotation Speed (0-5Hz) - 3D movement rate
Frequency Shift (-50 to +50Hz) - Pitch shifting without time change
Freq Shift Mix (0-100%) - Effect blend amount

PT2399 ANALOG DELAY
Time (20-600ms) - Delay time with analog character
Feedback (0-95%) - Delay regeneration amount
Wow & Flutter (0-100%) - Vintage tape-style pitch modulation
Lo-Fi Amount (0-100%) - High-frequency filtering for analog warmth
Soft Clipping (0-100%) - Analog saturation on delay path
Mix (0-100%) - Wet/dry balance

12-BIT REVERB
Size (0-100%) - Virtual room size with early reflections
Decay (0-100%) - Reverb tail length
Pre-Delay (0-100ms) - Initial reflection delay
Wet Gain (0.5-2x) - Reverb signal amplification
Mix (0-100%) - Reverb blend amount

COMB FILTER SEQUENCER
ON/OFF Toggle - Enable 5-stream comb filter sequencer
Speed (0.5-20Hz) - Sequence clock rate
Depth (0-100%) - Sequencer effect intensity
Wet Mix (0-100%) - Wet/dry balance for comb filtering
Squeeze (0-100%) - Waveform compression effect
Soft Clip (0-100%) - Harmonic saturation for comb filters
5-Step Sequence - Individual frequency control (100-2000Hz per step)

3-BAND ISOLATOR
Low Band (20-300Hz) - Bass frequency isolation and gain control
Mid Band (300-3kHz) - Midrange frequency isolation and gain control
High Band (3kHz-20kHz) - Treble frequency isolation and gain control

LIQUEFIER FILTER
Filter Freq (100-8000Hz) - Lowpass filter center frequency
Resonance (0-100%) - Filter resonance/Q factor
LFO Depth (0-100%) - Random frequency modulation intensity
LFO Rate (0.1-20Hz) - Random modulation speed
Wet Mix (0-100%) - Filter effect blend
Smooth/Stepped - Choose between smooth or stepped random modulation (low frequency with higher resonance + increased random lfo modulation for watery motion-effect)

SPEED CONTROLS
Grain Speed (0.1-4x) - Grain generation speed multiplier
Loop Speed (0.1-4x) - Loop playback speed multiplier *(ONLY available when "LOOP" Button is activated)
LOOP Button - Secondary loop toggle (synced with main LOOP button)

MASTER CONTROLS
Master Volume (0-200%) - Can boost gain x2 past 100% with dynamic compression
Preset Management - Save, load, and manage parameter presets
Mobile Support - Touch-friendly on-screen keyboard for mobile devices

GRAINS → ARPEGGIATOR → BANDPASS FILTER → NOTCH FILTER → VOCODER → WAVEFOLDER → RING MOD → SPECTRAL FREEZE → PHASER → WARP → 3D PANNER → FREQ SHIFTER → PT2399 → REVERB → COMB SEQ → CHROMATIC ENVELOPE → 3-BAND ISOLATOR → LIQUEFIER → OUTPUT

Help from Claude Sonnet 4