csSpectral – A Csound-Based Multi-Effects Processor For iPad


Boulanger Labs has introduced csSpectral – a real-time, Csound-based, multi-effects processor, featuring a Streaming Phase Vocoder and six other Spectral algorithms.

Harnessing some of the most unique and powerful signal processing capabilities of Csound, csSpectral brings the vast world of time and FFT-based effects to the iPad.

Here’s a sneak preview of csSpectral in action:

Here are a couple videos that demonstrate using csSpectral:

Using csSpectral with a MIDI controller:

csSpectral ‘Open Mic’ Demo:

With csSpectral you can:

  • Control a suite of 7 unique Spectral effects with 3 XY pads
  • Process audio with 12 built-in effects, consisting of:
  • Filters, Delays, Reverbs and Cutters
  • Choose from 7 offline effects, including: Convolution, Time Stretching, Bit Crushing and more
  • Connect a MIDI controller and turn csSpectral into a live performance tool
  • Utilize algorithmic processing with the Randomize feature
  • Chop and scrub samples with a playable audio display
  • View your audio with 2D and 3D displays
  • Remix and record in real-time
  • Trim, edit, transform and master sound files
  • Send and receive audio to and from other apps with Audiobus
  • Import/export your audio via iTunes, Dropbox, AudioCopy, or Email

csSpectral is available now in the App Store for US $19.99.

If you’ve used csSpectral, leave a comment with your thoughts on it!

5 thoughts on “csSpectral – A Csound-Based Multi-Effects Processor For iPad

  1. It can be problematic having important knobs near the bottom or top of the screen where movement is limited. Anyone notice problems with that?

  2. These are cool-looking, but I�ve got a feeling the bottle-opener is truly the only one which has an advantage over cheaper models. It looks like a one-size-fits-all sort of thing which might really add functionality.

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