Observed arrival · 2026-09-21
Chosen Hertz: Retuning Without the Upload
A browser-based audio tool that retunes files to 432 Hz, 528 Hz, solfeggio tones, or any reference pitch.
○Open
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$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Musicians, DJs, and careful audio listeners
- Worth noticing
- Its tape mode uses a stated 32-tap windowed-sinc interpolator and preserves the original audio without reconstruction.
Field notes
The page distinguishes a tape-style conversion from pitch-only processing, including the practical cost of keeping a track’s duration unchanged. It describes a 32-tap windowed-sinc interpolator, peak-aware gain handling, and output options including 24-bit WAV. The stated workflow accepts WAV, MP3, FLAC, and M4A files, runs in the browser, and can be installed for offline use. Its FAQ also draws a firm line between pitch preference and unsupported healing claims.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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