Oops - that was an earlier set of measurements - it should be 4 degrees at
16 k, 12 degrees at 18 k and 40 degrees at 20kHz.
Dave
On Jan 18 2011, dave.mal...@york.ac.uk wrote:
On Jan 18 2011, f...@kokkinizita.net wrote:
On Tue, Jan 18, 2011 at 08:49:00PM +0000, dave.mal...@york.ac.uk wrote:
At 44.1kHz, on the other hand, it's difficult to keep within the +-0.5
degree above 14kHz without the low frequencies going out of bounds
(that's a fudge factor of around 21) so I suspect that the
symmetrical around fs/4 approach would be much better - but as I'm
lazy I'm just going to oversample 44.1 and 48 k signals :-)
1 degree phase error at 14 kHz corresponds to 0.067 mm at the speed
of sound. Are your pinnae that stable ?
Absolutely not - and there's something about going grey that worsen's the
effect :-)
However, the problem is that it gets worse _really_ quickly - at 16kHz
it's 55 degrees out and at 20kHz it's nearly 80 degrees out (so almost
totally out of phase). If it was smoother and shallower I wouldn't be
worried.
Dave
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