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Re: Few sample rate conversion questions
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Re: Few sample rate conversion questions


  • Subject: Re: Few sample rate conversion questions
  • From: William Stewart <email@hidden>
  • Date: Thu, 22 Jan 2009 14:03:30 -0800


On Jan 22, 2009, at 2:47 AM, Mike Kluev wrote:

On Wed, 21 Jan 2009 12:54:43 -0800
William Stewart <email@hidden> wrote:
On Jan 21, 2009, at 5:08 AM, Mike Kluev wrote:
What complexity do they use?
'norm'
Can I control it?
no

I'll file feature request to make complexity controllable.

BTW, changing kAudioUnitProperty_SampleRateConverterComplexity
seems to do nothing with AUConverter (while the SetPropety call
returns noErr). Isn't that a bug?

It should be implemented with AUConverter , but it isn't with the varispeed


Bill



No - but what you do is a "latency pull" - you pull at least as much latency samples through the AU providing correct input and then throw out latency num samples of the output of the AU, then you are good to go.
Though it is a bit convoluted, you can have a look at auprocess in the examples, it does all of this for you

Thank you, I'll check this.

Mike


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  • Follow-Ups:
    • Re: Few sample rate conversion questions
      • From: "Mike Kluev" <email@hidden>
References: 
 >Re: Few sample rate conversion questions (From: work <email@hidden>)
 >Re: Few sample rate conversion questions (From: "Mike Kluev" <email@hidden>)
 >Re: Few sample rate conversion questions (From: "Mike Kluev" <email@hidden>)
 >Re: Few sample rate conversion questions (From: "Mike Kluev" <email@hidden>)
 >Re: Few sample rate conversion questions (From: William Stewart <email@hidden>)
 >Re: Few sample rate conversion questions (From: "Mike Kluev" <email@hidden>)

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