Re: How to set Sample Rate Conversion quality
Re: How to set Sample Rate Conversion quality
- Subject: Re: How to set Sample Rate Conversion quality
- From: Brian Willoughby <email@hidden>
- Date: Mon, 24 May 2010 14:29:17 -0700
Those constants are correct: Complexity_Mastering and Quality_Max.
Note that the Mastering Complexity is only available with Leopard and
later, not Tiger.
You can see the SRC quality at http://src.infinitewave.ca/ under
Apple CoreAudio (Leopard) as compared to other SRC engines.
P.S. I didn't review your code or even try to compile it, but I did
confirm that these are the same constants recommended by the
CoreAudio team for using afconvert to the maximum SRC ability.
Brian Willoughby
Sound Consulting
On May 24, 2010, at 02:32, tahome izwah wrote:
Ok so I was able to find some references and come up with the
following code - is this the correct approach for setting the highest
possible SRC quality? I am setting this property on the output
(client) side - is this correct?
Thanks
--th
----------------------------------------------------------------------
-------------
prop = kAudioConverterSampleRateConverterComplexity_Mastering;
AudioConverterSetProperty(outConverter,
kAudioConverterSampleRateConverterComplexity,
sizeof(prop), &prop);
prop = kAudioConverterQuality_Max;
AudioConverterSetProperty(outConverter,
kAudioConverterSampleRateConverterQuality,
sizeof(prop), &prop);
----------------------------------------------------------------------
-------------
2010/5/24 tahome izwah <email@hidden>:
I am using ExtAudioFile to read an AIFF file and convert it to the
sample rate of my project. This works great, but the sample rate
conversion quality is really bad. Is there a way to tell the
conversion to use the highest possible SRC quality? If so, how? Via
kExtAudioFileProperty_ConverterConfig perhaps? Is there any sample
code for this?
Thanks!
--th
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