Celemony Capstan
Wow & Flutter Removal Software
Capstan – an end to wow and flutter
For over a hundred years, music has been recorded on mechanical mediums. And for over a hundred years, there has been a problem with this: wow and flutter. Who isn’t familiar with the wobbling and warbling, the droning and dragging? Mechanical degradation caused by defective devices or sticking tapes, by aging or defective storage. In the past, it was usually impossible to get rid of wow and flutter.
Countless recordings of renowned orchestras, big bands, and rock groups are currently slumbering deep in archives. Yet they are unusable, simply due to wow and flutter. The tapes worthless, the recordings lost to posterity. Until now.
For, in Capstan, there is now for the first time a program capable of removing wow and flutter from recorded music. Whether on tape, compact cassette, wax, shellac or vinyl.
Musical Intelligence
The Capstan algorithm is capable of recognizing not only the smallest amounts of wow and flutter but also continuous speed variations within the musical material.
Capstan’s detection of notes and their fluctuations is based on the patented DNA Direct Note Access technology made famous by Melodyne, an application used in studios all over the world for the editing of pitch and timing. Unlike Melodyne, however, Capstan employs DNA note detection exclusively to remove wow and flutter by means of varispeed. It allows detailed editing that extends even to let you draw in the curve by hand.
Precise Control
How far Capstan reaches into your music to correct wow and flutter is something you can determine precisely. The corrections are effected using high-quality varispeed, so no artifacts of the kind associated with pitch-shifting or time-stretching algorithms are introduced.
The Medium Is Irrelevant
Capstan is a purely digital solution that detects the wow and flutter in the music material itself.
Many Advantages
Capstan is an easy-to-use and highly efficient solution for the elimination of wow and flutter:- Runs on Mac or PC and requires no additional hardware
- Handles all common audio formats
- For mono, stereo, multi-channel or multi-track recordings
- Detection based on our patented DNA Direct Note Access technology
- High-quality, varispeed-based correction free from pitch-shifting or time-stretching artifacts
- Works even when a tape has already been copied several times or has been digitized in low resolution
System Requirements
macOS:
- Intel Mac
- macOS 10.9.5, 10.10.5 or 10.11.3 to 10.13
- 4 GB of RAM or more
- iLok 2 or 3 dongle
Windows (64-bit):
- Windows 7, Windows 8.1 or Windows 10
- 4 GB of RAM or more
- iLok 2 or 3 dongle
Instant Delivery
Products with the Instant Delivery badge are in stock, and can be delivered to your email in seconds after you purchase.

Education Proof
Products with education pricing are for students & teachers only. To prove your education status we require that you upload proof in the form of an image/PDF.
Types of proof
StudentStudent ID Card, Letter of enrollment, or similar
Teacher/LecturerTeacher ID Card, Lecturer ID Card, Payslip, Letter from the school/college
Education proof is submitted to the manufacturer and is accepted at their discretion.
Digital Download Info
Digital Products are delivered electronically via Email. No physical product will be shipped to you!
In most cases, the product you purchase from us is a serial number/license code/activation code to register the product with the manufacturer and download directly from them. This ensures you receive the latest version of products, and the best support when neccessary.
The email you receive from us after purchase will contain the license code and a link to our Install Instructions page. You can visit that page by clicking here: Install Instructions.
Crossgrade Proof
This crossgrade is for owners of a competing DAW. To prove your DAW ownership, we require that you upload proof in the form of an image/PDF.
Types of proof
A copy of your purchase receipt for the original license or the most recent update/upgrade
A screenshot of your product registration
A photo of your package (either CD/DVD or printed manual), with the unique serial number included in the photo.
Get a free upgrade to RX10
This offer is valid until RX10's release.
Eligible Products
Purchase one of the following products:
- RX9 Standard
- RX9 Standard - Crossgrade from any paid iZotope product
- RX9 Standard - Upgrade from any RX Standard, Advanced, or Post Production Suite
- RX9 Standard - Upgrade from RX Elements/Plugin Pack
- RX9 Advanced
- RX9 Advanced - Crossgrade from any paid iZotope product
- RX9 Advanced - Upgrade from RX Advanced 1-8, or Post Production Suite 1-5
- RX9 Advanced - Upgrade from RX Standard 1-8
- RX9 Advanced - Upgrade from RX Elements/Plugin Pack
- RX Post Production Suite 6
- RX Post Production Suite 6 - Upgrade from RX Post Production Suite 1-5
- RX Post Production Suite 6 - Upgrade from RX Advanced 1-8
- RX Post Production Suite 6 - Upgrade from RX Standard 1-8
- RX Post Production Suite 6 - Upgrade from RX Post Production Suite 1-8
Exclusions
Only the upgrades and crossgrades specified above are eligible. All others listed apply to the full version of the product only. Education versions are not eligible.