Boulanger Labs specializes in the creation of innovative and unique audio tools and is dedicated to all who delight in creating and sharing beautiful noise.






Boulanger Labs presents csSpectral – the highly anticipated follow-up app to our debut csGrain.

csSpectral is 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.

With csSpectral you can:


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