Re: Usefulness of a Cocoa DSP framework?
Re: Usefulness of a Cocoa DSP framework?
- Subject: Re: Usefulness of a Cocoa DSP framework?
- From: "Hans Kuder" <email@hidden>
- Date: Wed, 1 Aug 2007 14:48:28 -0400
> > What would it do that's not already covered by the Accelerate or
> > CoreAudio frameworks?
>
> Have you used CoreAudio? It is much much more low-level than what
> your typical Cocoa programmer is accustomed to.
Exactly. Although, the code I'm working on doesn't have anything to do with
CoreAudio, which is (mostly) for playback and real-time processing (unless
you're referring to offline rendering AudioUnits, which are still very
complex to set up and use).
The Accelerate framework provides a lot of nice building-block
functionality, but for anything non-trivial it gets messy very quickly. My
framework encapsulates signals/sounds and allows you to do more complex
operations at a higher level:
- Linear Predictive Coding (analysis, resynthesis)
- Pitch detection/tracking
- Onset detection
- Filtering/convolution (FIR and frequency-domain multiplication only, so
far)
- Interpolation & downsampling
Like I said, at this point it's just a bunch of functionalities cobbled
together for my own use. But it does make writing signal processing
applications in Obj-C a lot more natural.
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