M/S Processor by Ruben Nine (iPad)
Released: Jul 31, 2013
Version: 1.8.3
Size: 7 MB
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Ranking - Music (iPad)

M/S Processor

Ruben Nine
M/S Processor is an Audiobus-compatible iOS application intended for audio professionals requiring Mid/Side (M/S) signal processing.


While the most common use case for M/S Processor is decoding a M/S signal to L/R, the reverse process (encoding L/R to M/S) is also possible. A third mode, inline mode, is also included. In this mode, a stereo signal is encoded to M/S, and then decoded again to L/R. This 2-in-1 mode is useful for tasks such as narrowing or widening the stereo image, or muting the M or S channels independently for creative or experimental purposes.

Audiobus Integration

M/S Processor is most useful when used as an Audiobus filter. In this case, M/S Processor can be used to process audio before feeding it into any other Audiobus-compatible audio application such as Apple's Garageband for recording and further processing.

Main Features

• External audio and Audiobus input
• Encode, Decode, and Inline processing modes
• Peak and RMS metering for input and output channels with peak overload indicator
• Gain (-48dB to +24dB) rotary controls (per channel)
• Linked Gains button
• Swap Channels (M ↔ S, L ↔ R) button
• Mute, and Phase Rotation buttons (per channel)
• Hi-res Retina graphics


Please consider rating or reviewing M/S Processor after each update to help us further develop our app.

What's new in version 1.8.3
- Added iPad Pro app icon
- Minor improvements in audio engine
Screenshot #1
Our verdict: Good
  • ➜ M/S Processor is a good, 3.5-star app.
  • ➜ The app is currently free, instead of its regular price of $2.99.
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