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Simulate cassette tape audio profiles using FFmpeg

Hacker News Sunday 26 July 2026, 20:02 UTC By xterminal 1 min read
Key Points

This project simulates cassette tape audio profiles using ffmpeg. It applies tape noise, wow and flutter pitch modulation, bandwidth limits, and equalizer adjustments. - bash - ffmpeg (compiled with libmp3lame) BASF LH Extra C90 : German ferric tape.

This project simulates cassette tape audio profiles using ffmpeg. It applies tape noise, wow and flutter pitch modulation, bandwidth limits, and equalizer adjustments. - bash - ffmpeg (compiled with libmp3lame) BASF LH Extra C90 : German ferric tape. Moderate hiss and mild flutter.Maxell UD C90 : Higher-grade ferric tape. Lower hiss, wider frequency range.Sony CHF60 Type I Normal (1978) : Vintage 60-minute normal tape. Warm mid-range.Sony CHF90 (1978) : Vintage 90-minute normal tape. Slightly higher tape speed drift.TDK D90 (1995-1997) : Late-era Type I tape. Clean sound, subtle analog character.mk60 : Soviet MK-60 tape. High tape hiss, heavy wow and flutter, aggressive frequency cut. Navigate to any cassette folder and run the scripts: # Convert local audio files (mp3, ogg, m4a, aac) ./convert_cassette_*.sh # Record a live web stream into segment files ./record_stream_cassette_*.sh [STREAM_URL] Processed output files will be saved in the ./out folder. MIT.
FFmpeg (ORG) BASF (ORG) German (ORG) Maxell UD (ORG) Sony (ORG) TDK D90 (ORG) Soviet (ORG) aac (ORG) MIT (ORG)
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