Audio Studio 2.0 (ffmpeg)

Audio Studio & SFX Slicer

Client-Side Hybrid DSP + FFmpeg Engine

Web Audio DSP: Ready

Audio Concepts Made Easy — How Features & Tweaks Work

Speed vs. Pitch vs. Tape Speed

Speed (Keep Natural Voice / Atempo): Speeds up talking or music while keeping voices normal and natural. No chipmunk voice! Perfect for podcast listening or study.

Voice Tone & Pitch: Shifts musical pitch up or down (e.g. monster voice vs cartoon) without changing audio length or tempo.

Tape / Vinyl Varispeed: Speed and pitch scale together (like speeding up or slowing down a cassette/vinyl). Fast = chipmunk voice; Slow = deep drone.

Volume & Normalization

Peak Max (0 dB): Brings the single loudest hit up to the absolute digital ceiling without distortion. Best for sound effects and clean drums.

RMS Broadcast Norm: Levels out average loudness across speech so whispers and shouts feel smooth, balanced, and broadcast-ready.

Gain (dB): Simple volume boost/cut. +6 dB doubles loudness; -6 dB cuts loudness in half.

Keystroke & Foley Slicing

Sensitivity: How loud a sound must be to trigger a cut. Lower dB catches soft typing; higher dB rejects room noise.

Min Hit Gap: Minimum milliseconds between cuts to stop key bounce from double-triggering.

Attack Pre-Roll: Preserves the microscopic click before the sound peak so the strike isn't chopped.

Export & Quality

WAV (16-bit / 32-bit): Completely uncompressed studio quality. Use for professional audio editing, sound effects libraries, and video production.

MP3 (128 - 320 kbps): Lightweight compressed audio. Ideal for podcasts, game SFX, web pages, and email attachments.

Drop audio or video files here, or browse

Supports MP3, WAV, AAC, M4A, FLAC, OGG, WebM, and MP4/MKV video audio demuxing

No audio loaded 00:00.000

Zoom: 1.0x

Cut & Selection

Selection: 0.000s - 0.000s (0.000s)

Speed, Pitch & Voice Controls

Pitch-Safe Atempo Inside

Change speed without sounding like a chipmunk, adjust voice tone, or simulate vintage tape varispeed.

Apply Scope: Auto (Selection if active, else All) Selected Range Only Entire File

Playback Speed (Normal Voice — No Chipmunk) 1.00x

Speeds up or slows down while keeping natural vocal pitch using intelligent Atempo time-stretching.

Presets:

Speed Multiplier:

1.00x: Original unaltered speed

Voice Tone & Pitch Shift (Key Change) 0 semitones

Make voices deeper or higher without altering audio length or tempo.

Presets:

Shift (Semitones):

0 st: Natural voice pitch

Tape / Vinyl Speed (Speed + Pitch Shift Together) 1.00x

Classic reel-to-reel tape behavior: speeding up creates the squeaky Chipmunk effect; slowing down lowers pitch into a deep drone.

Presets:

Tape Rate:

1.00x: Standard tape speed

Dynamics & Volume Leveling

Normalize loudness for broadcast standards, create smooth fades, or adjust gain.

Tip: Use Peak for clean sound effects; use RMS for dialogue and podcasts.

Quick Gain:

Gain Adjustment (dB):

0.0 dB: Unity gain (no change)

Tone EQ & Vocal Reduction

Shape tone warmth, vocal presence, or cancel center vocals for karaoke.

Presets:

Bass (100Hz warmth):

Treble (5kHz clarity):

Export Master Audio

Format: WAV (16-bit Lossless) WAV (32-bit Float) MP3 (320 kbps High) MP3 (192 kbps Standard) MP3 (128 kbps Light) Range: Entire File Selected Range Only

Transient & Keystroke Slicer

Auto-detects typewriter strokes, footsteps, and sound effects with sub-millisecond precision.

Auto-Slicer Presets (One-Click Setup):

Sensitivity (dB):

Lower dB detects softer hits; higher dB ignores room noise.

Min Hit Gap (ms):

Minimum spacing between hits to prevent double-hits.

Attack Pre-Roll (ms):

Captures the initial crisp transient before the hit peaks.

Decay Tail (ms):

How long each sample rings out after the transient strike.

Detected Slices: 0

Load audio and click "Run Auto-Detection" to slice keystrokes and hits.

Batch Audio Processing

Process dozens of audio files with one click. Ideal for loudness matching, podcast mastering, and speed changes.

Batch Recipe: Podcast Speed-up (1.25x Pitch-safe Atempo) Study Speed-up (1.50x Pitch-safe Atempo) Peak Normalize (0 dB Max Volume) Auto-Strip Dead Silence (Start & End) Downmix to Voice Mono (Compact) Compress to MP3 (192 kbps Standard)

Recipe: Speeds up all files by 25% without altering vocal pitch or causing chipmunk effect.

File Name	Duration	Status	Action
No files queued. Drop files above to add them to the batch queue.

Engine Activity Log Ready

[System] Browser Audio Studio initialized. Pure client-side DSP active.