Audio
Convert supported MP3 or WAV files, trim recordings, merge clips and adjust volume. Export PCM WAV locally with clear format and size limits.
Explore tools
Audio to WAV
Convert supported MP3 or WAV audio to 16-bit PCM WAV, with optional rate and channel settings.
Trim audio
Select one part of a WAV or MP3 recording and download the excerpt as WAV.
Merge audio
Put recordings or sound clips in order and join them into one WAV file.
Adjust audio volume
Raise or lower the volume and save a new WAV file.
Shorten low-level recording pauses
Shorten long pauses under an all-channel RMS threshold and export complete retained-frame mappings.
Recover and split recorded channels
Explicitly isolate, repeat or split existing source channels into playable WAV files with full mappings.
Full-recording spectrogram and numeric export
Analyze the complete recording and export a labelled PNG, full STFT amplitude matrix and explicit window/time/frequency settings.
Apply explicit recording frequency filters
Apply explicit high-pass, low-pass or notch chains and export WAV, response and clipping counts.
Filename-template MP3 tag editor
Persist composed MP3 titles, artists and track numbers from an explicit filename template while preserving MPEG and unrelated tag frames.
CUE-index recording splitter
Split one WAV, MP3 or raw FLAC recording at explicit CUE indexes and export PCM16 WAV tracks with complete source-frame mappings.
MIDI note timeline query
Convert local SMF 0/1 ticks through the full tempo map into note seconds, then query a time range, track and channel and save every original event and note.
Pack a portable local playlist
Bind local M3U references to selected originals, preserve repeated tracks and metadata, and download a complete relative-path ZIP with SHA256 reports.
Repair WAV length fields
Patch only the RIFF and data lengths of a confirmed final PCM recording, preserving every existing sample and prefix byte.
Extract embedded audio pictures
Recover every embedded PNG/JPEG payload from local FLAC/MP3 without reencoding, with originals and complete JSON/CSV ZIP.
Choose the right tool
Choose an operation after confirming the browser can decode the source. Inspect clip boundaries and listen to the downloaded PCM WAV output. Increasing volume can clip peaks, and decoded audio may consume much more memory than a compressed MP3.