Instant web retune
Drop in WAV, MP3, M4A, AAC or FLAC. Preview and export without sending the recording to a server.
Precision audio utility · NoDAW Labs
Lower the reference.
Hear it differently.
Move a complete recording from A=440 to A=432 with exact −31.77-cent conversion, private local processing, and mastering-ready output.
Limited-time launch$4 unlocks full web + offline batch processing
SOURCE 440.000 HzOUTPUT 432.000 Hz
−31.77cents
Exact pitch shift24bit
Clean WAV output0uploads
Audio stays local$4limited
Limited-time full systemHear it without guessing
Hear what 31.77 cents changes.
Switch between 440 and 432 without losing the musical position. Click anywhere to seek, or drag directly on the real waveform to loop the exact section you want to judge.
SYNCED A/B REFERENCE PLAYERDemo Track 01Loading preview audio…
0:00/ 0:16
Click to seek · Drag a section to loop · Switch A/B while playing
NoDAW-generated audio is used until licensed 440 / 432 examples are installed. Paired masters remain mapped to the same musical position.
The instrument
Retune your own track.
Free previews are unlimited and clearly export the first half of the recording. Full-length web and offline batch processing unlock together for a limited-time $4 launch price.
LOCAL AUDIO INPUT
Drop your track here
WAV (incl. RF64 / 32-bit float), MP3, M4A/ALAC, AAC, FLAC, AIFF, OGG/Opus, MP4/MOV audio · Up to 180 MB
Private web engine + offline batch system
One track now. A whole folder next.
Use the browser for fast listening tests. Use the downloadable Windows batch system when you need full folders, alternate frequency references, repeatable output, and optional LUFS delivery targets.
Offline batch system
Process single tracks or entire folders with FFmpeg. Choose 432, 435, 436, 438, 440 or a custom reference.
Mastering-aware output
Optional loudness normalization targets for streaming, club playback, podcasts, and clean archival delivery.
The measurable part
One exact conversion.
Clear boundaries.
A4=440 Hz is the modern standard reference. reTUNE applies a ratio of 432 ÷ 440 = 0.981818, lowering the entire recording by 31.77 cents.
That changes pitch and, in the classic resampling mode, lengthens playback by about 1.85%. It does not prove medical, spiritual, or therapeutic effects. The reason to use it is simple: you prefer how it sounds.
The Frequency Journal
Read the full signal.
Twelve complete long-form guides covering engineering, history, listening, and the conspiracies as rumors rather than settled fact.
What 432 Hz actually changes in a finished recording
The exact mathematics, the audible result, and the difference between retuning, EQ, tempo change, and sample-rate conversion.
12 min read · 6 sectionsBefore A=440: how concert pitch moved across cities and centuries
There was no single ancient global pitch. The modern reference emerged from instruments, measurement, broadcasting, manufacturing, and compromise.
14 min read · 6 sectionsThe 432 Hz conspiracies: what people repeat, and what the record supports
A neutral inventory of the Nazi, Rockefeller, cosmic-number, healing, and natural-frequency stories, clearly labeled as rumors rather than proof.
16 min read · 7 sectionsHow to run a 440 versus 432 listening test worth trusting
A repeatable method for controlling loudness, timing, expectation, and fatigue.
10 min read · 6 sectionsWhat kinds of songs reveal a 432 retune most clearly
A lawful genre-spanning test list built around musical characteristics rather than unauthorized downloads.
11 min read · 6 sectionsResampling, pitch shifting, and tempo: three operations people confuse
Why the algorithm matters, when duration should change, and what to inspect after rendering.
13 min read · 6 sectionsLUFS after retuning: level, loudness, and what mastering can improve
Retuning and loudness delivery are separate. Combine them without clipping or disguising the comparison.
12 min read · 6 sectionsHow to build an alternate 432 master without losing the approved original
Versioning, naming, quality control, metadata, and client communication for producers and artists.
11 min read · 6 sectionsRetuning a folder safely: the batch workflow that avoids damaged masters
Preflight, naming, logging, verification, and recovery for large audio folders.
12 min read · 6 sectionsBeyond 432: what alternate frequency references actually mean
435, 438, 442, historical pitch, and custom targets without treating one number as universally correct.
12 min read · 6 sectionsWhy local audio processing matters for unreleased music
What stays in the browser, what a local workflow protects, and what privacy language should never overpromise.
9 min read · 6 sectionsBefore you release a 432 version: the complete creator checklist
Rights, source quality, duration, loudness, metadata, distribution, and honest promotion.
13 min read · 6 sections Limited-time launch price
One purchase. No subscription.
The complete reTUNE[432] system.
$4one time · limited time
- Full-length web processing
- Windows offline batch tools
- 432 + alternate frequency targets
- Optional LUFS mastering outputs
Secure checkout on Gumroad. Your license key arrives on the receipt page and by email; paste it below to unlock Pro in this browser.
reTUNE[432] Pro
Unlock Pro with your license key
Bought reTUNE[432] Pro on Gumroad? Paste the license key from your receipt to unlock full-length renders and the offline batch tool.
Lost your key? Check your Gumroad receipt email or your library at gumroad.com/library. Still stuck? Email NoDAW@nodawlabs.com.