CYBERTOOLS / 0x60
MULTIMEDIA_SUITE > SONIC_SLICE NODE_0x60

SONIC SLICE // WAVEFORM AUDIO TRIMMER

In-browser waveform audio slicer and ringtone studio. Decodes MP3, WAV, OGG, and AAC via Web Audio API, extracts PCM samples with millisecond accuracy, and exports lossless WAV files.

DROP AUDIO FILE HERE OR CLICK TO BROWSE

Supports MP3, WAV, OGG, FLAC, M4A, and AAC. Decoding occurs locally in browser memory with zero network uploads.

100% CLIENT-SIDE AUDIO DECODING

CLIENT-SIDE WEB AUDIO PCM SLICING & WAV SYNTHESIS

TACTICAL AUDIO SPECIFICATION // RIFF WAVE ENCODING & HARDWARE BUFFERS

In-Browser Decoding & Waveform Peaks

The HTML5 Web Audio API provides the AudioContext.decodeAudioData() method, which asynchronously decompresses encoded audio formats (MP3, AAC, OGG, FLAC) into raw 32-bit floating-point linear PCM samples stored within an AudioBuffer.

To visualize the waveform across a canvas, the raw sample array is downsampled across pixel columns. Peak positive and negative amplitudes within each sample bucket are calculated to paint high-contrast neon peaks with zero latency.

Canonical 44-Byte RIFF/WAVE Packaging

Exporting uncompressed audio without third-party server encoders requires procedural binary assembly. Sonic Slice allocates an ArrayBuffer and populates the canonical 44-byte RIFF/WAVE header using a JavaScript DataView:

Bytes 0–3 identify the chunk ID (RIFF), followed by total filesize, format descriptor (WAVE), subchunk 1 (fmt ), audio format (1 for uncompressed PCM), channel count, sample rate (e.g. 44100 Hz), byte rate, block alignment, and bits per sample (16-bit). Floating-point samples are clamped and converted to signed 16-bit integers (-32768 to 32767) before generating a local Blob.