Re: Test report MBP built-in audio device
Re: Test report MBP built-in audio device
- Subject: Re: Test report MBP built-in audio device
- From: Richard Dobson <email@hidden>
- Date: Tue, 26 Aug 2008 16:07:39 +0100
Richard Dobson wrote:
..
We have no evidence yet of how pure your sinewave is. Have you measured
it independently? Can you prove that all harmonics and noise are more
than (say, generously) 100dB down? Are you generating it with analog
means (what instrument), or digitally? How, exactly? Simple linear
interpolation of a wavetable? Direct sine computation? Double precision?
As you were: I see you have provided that info within an earlier post.
I strongly suggest including that in your report. It doesn't matter if
you consider it "interesting" or not - it needs to be there.
One other thing - your test is at 48000Hz, which is fine. But it would
be worth documenting that the internal audio is also configured for that
rate, otherwise you may find you are testing the SRC as well as the codec.
Richard Dobson
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