Measure wow and flutter of tape and vinyl transfers: weighted RMS per AES6/IEC 60386/DIN 45507, 2-sigma peak, and drift / wow / flutter / scrape band breakdown.

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Noise Profile Extractor

Capture a noise fingerprint from a selected region of your audio - floor level, third-octave spectrum, hum harmonics, classification - then reuse it to denoise this file or any other file.

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Normalization History Card

Generate a shareable before/after report card for any loudness change: gain applied, LUFS, true peak, sample peak, loudness range, waveforms and third-octave spectral deltas.

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Streaming Loudness Preview

Measure your master once, then see the playback gain every major platform will apply — Spotify, Apple Music, YouTube, Tidal, Amazon, Deezer and more.

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True Peak Safe Limiter

Limit a master to a chosen true-peak ceiling (-1, -2, -1.5 or -0.3 dBTP) with a measure-limit-verify loop: FFmpeg’s lookahead limiter is driven below the ceiling by an inter-sample margin, and the result is re-measured with the BS.1770 oversampled meter until the true peak genuinely sits under target.

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Bilingual Subtitle Merger

Merge two single-language subtitle files (SRT or WebVTT) into one bilingual track — primary language on top, secondary below — aligning cues by time overlap or cue index.

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ATSC A/85 Broadcast Loudness Validator

Validate audio against ATSC A/85 (CALM Act): -24 LKFS ± 2 LU program loudness per ITU-R BS.1770-4, -2.0 dBTP oversampled true peak, 48 kHz delivery check and a dialnorm cross-check, with a per-file short-term timeline chart.

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EBU R128 Broadcast Loudness Validator

Validate audio against EBU R128: integrated programme loudness at -23.0 LUFS with EBU Mode gating, oversampled true peak at -1.0 dBTP, loudness range (Tech 3342) and momentary / short-term maxima, with a per-file timeline chart.

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Podcast RSS Enclosure Checker

Validate podcast episode audio against hosting expectations and cross-check it with your RSS feed: enclosure URL / length / type attributes, itunes:duration, GUID uniqueness, RFC 2822 dates, platform codecs and bitrates — byte-exact enclosure lengths included.

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Album Loudness Matcher

Match a batch of tracks to one target loudness the way album gain works: one gain for the whole record keeps intentional inter-track dynamics, hybrid mode only tames outliers, per-track mode flattens everything.

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Audio to Sheet Music

Transcribe a music performance into engraved sheet music: Basic Pitch note detection, grid quantization, Krumhansl–Schmuckler key finding, then MusicXML and ABC notation (plus optional MIDI) in one ZIP.

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Auto-Tuner Lite

Snap off-pitch vocal notes to a selected scale: pitch tracking, note segmentation, and per-note correction with before/after cents measurements.