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Re: Combining AUHAL input and an AudioConverter
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Re: Combining AUHAL input and an AudioConverter


  • Subject: Re: Combining AUHAL input and an AudioConverter
  • From: Brad Ford <email@hidden>
  • Date: Tue, 10 May 2005 13:19:40 -0700



Incidentally doubling the number of channels doubles the bytes/ packet only. Different sample rates didn't change anything but needed to be non-zero.


I think that Qclp only does mono. As for sample rates, it only does 8000 - its a narrow band codec. So, like in my previous email, you have to set this up as 1 channel, 8000 sample rate - eventually we get there!


Bill


Correction, Qclp can do sample rates up to 65 kHz. It's AMR Narrowband ('samr') that can only do 8 kHz. The kAudioFormatProperty_AvailableEncodeSampleRates property can help with this.


-Brad
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References: 
 >Combining AUHAL input and an AudioConverter (From: Heath Raftery <email@hidden>)
 >Re: Combining AUHAL input and an AudioConverter (From: William Stewart <email@hidden>)
 >Re: Combining AUHAL input and an AudioConverter (From: Heath Raftery <email@hidden>)
 >Re: Combining AUHAL input and an AudioConverter (From: William Stewart <email@hidden>)
 >Re: Combining AUHAL input and an AudioConverter (From: Heath Raftery <email@hidden>)
 >Re: Combining AUHAL input and an AudioConverter (From: Greg Chapman <email@hidden>)
 >Re: Combining AUHAL input and an AudioConverter (From: Heath Raftery <email@hidden>)
 >Re: Combining AUHAL input and an AudioConverter (From: William Stewart <email@hidden>)

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