Audio Tools

Inspect duration, channels, sample rate, file size and waveform.

Select start/end times and export the segment as PCM WAV.

Decode a browser-supported source and export 16-bit PCM WAV.

Join compatible decoded files in order and export one WAV.

Apply fixed gain or peak normalization with clipping evidence.

Apply deterministic linear fades and export WAV.

Overlap two compatible files using equal-power or linear fades.

Render audio to a selected sample rate using browser OfflineAudioContext.

Average to mono or create bounded two-channel stereo output.

Change duration with approximate pitch preservation using browser OLA.

Transpose pitch while targeting the original duration.

Add a precise zero-amplitude interval at a selected position.

Trim leading and trailing quiet regions using an explicit dBFS threshold.

Tame peaks with linked envelope compression and a sample-peak ceiling.

Measure full-file decoded RMS, sample peak and crest factor.

Measure per-channel mean offset and optionally subtract it.

Invert selected channel sample polarity without changing duration.

Apply bounded biquad EQ and high/low-pass filters.

Pan mono or adjust stereo left/right balance.

Measure sample peaks, full-scale samples and digital headroom.

Finite browser-local echo series with delay, feedback, wet mix and repeat controls.

Bounded multi-delay algorithmic reverb with room, damping, wet mix and tail controls.

First-two-channel correlation, RMS balance and mid/side evidence.

Threshold-based downward expansion with attack, release and attenuation floor controls.

Single-window Hann FFT frequency evidence with selectable FFT size.

Generate bounded tones, white noise or pink noise as 16-bit PCM WAV.

Inspect decoded properties plus bounded RIFF/WAV and common ID3v2 metadata evidence.

Calculate per-channel min/max, mean, RMS, peak, crest factor and zero crossings.

Generate TXT/JSON technical evidence reports locally in the browser.

Write common MP3 ID3v2.3 or RIFF/WAVE LIST/INFO text fields without audio transcoding.

Compare decoded technical evidence for two audio files and export TXT/JSON differences.

Extract an audio stream locally as MP3, WAV, AAC, FLAC or OGG.

Browser-based audio conversion without server binaries.

Inspect ffprobe-verified audio stream indexes, codecs, channels, rates and available tags.

Extract audio from up to five videos with separate downloads.

50/60 Hz notch-family hum reduction with bounded harmonics.

Stationary-noise spectral profile reduction with Hann overlap-add.

Conservative isolated-discontinuity interpolation.

Threshold-run analysis with conservative short-run interpolation.

Replace a damaged stereo channel with the surviving channel as dual mono.

Generate zero silence or repeat a selected ambience section as simple room tone.

Reverse decoded sample order per channel and export PCM WAV.

Repeat a selected region, optionally crossfade boundaries, and export cue sidecar evidence.

Estimate bounded integer-sample channel delay and optionally delay the earlier channel.

Threshold-based sustained quiet/activity segmentation.

Candidate onset evidence from bounded amplitude flux.

Ranked BPM candidates with explicit half/double-time ambiguity.

Export a selected threshold-derived active range as PCM WAV plus JSON manifest.

Count and summarize sustained below-threshold pause evidence.

Rank onset/BPM-assisted loop edit candidates with ambiguity disclosed.

Preview and render bounded threshold-based pause shortening.

Package detected active-range WAV files and a manifest into TAR.

Export threshold-derived markers as JSON, CSV or Audacity label text.

Mono/stereo BS.1770-style K-weighted gated programme loudness.

Gated short-term percentile range evidence without false certification.

4× windowed-sinc inter-sample peak evidence, not certified dBTP.

400 ms and 3-second K-weighted loudness evidence over time.

Plan target loudness gain while respecting estimated peak headroom.

Estimate maximum static gain to a chosen peak ceiling.

Analyze up to 10 files into one loudness evidence table.

Clearly labelled practical target starting points with peak-constrained gain planning.

Compare B-minus-A loudness evidence without a quality verdict.

Export transparent JSON/CSV loudness evidence with method and version traceability.

Reversible orthonormal L/R ↔ M/S conversion for exactly two channels.

Exchange left and right decoded channels and export WAV.

Find thresholded decoded sample peaks and export CSV/JSON marker evidence.

Extract one decoded source channel as mono WAV.

Locate the strongest decoded RMS window and export evidence.

Measure per-channel sample-sign crossing counts and rates.

Measure decoded sample-peak-to-RMS crest factor.

Split decoded audio into equal-time WAV parts in a browser-generated TAR archive.

Apply static RMS-target gain with a sample-peak ceiling.

Measure L/R RMS plus mid and difference amplitude evidence.

Export decoded sample-amplitude distribution evidence.

Export windowed decoded sample-peak evidence through time.