KVR Audio

guillaume28 · Post by **guillaume28** » Wed Sep 12, 2007 9:14 am

I've seen that the frequency response of the M-Audio Ozone interface is 20hz-20khz.
Is it fixed or is wider when using 96khz sample rate ?

If I buy headphones with 18-24khz, everything below 20hz and everything above 20khz won't be heared ?

Is 20hz-20khz reasonable for an interface ?

stefancrs · Post by **stefancrs** » Wed Sep 12, 2007 9:26 am

Do you hear frequencies outside the 20hz-20khz range? I know I don't.

guillaume28 · Post by **guillaume28** » Wed Sep 12, 2007 9:44 am

I don't know in fact. How to "test" that if I don't have the suited gear to reproduce the frequencies below an above this bandwidth...

stefancrs · Post by **stefancrs** » Wed Sep 12, 2007 9:47 am

Try listening to for instance a 19kHz sine. On good equipment. I can only hear up to about 17.5kHz, if I don't crank up the volume. Which is quite good for my age (29).

On bad soundcards you sometimes get distortion (aliasing and whatnot) on the higher frequencies, which introduces lower, and hence audible frequencies, so pay attention to what happens as you sweep the frequency upwards.

jupiter8 · Post by **jupiter8** » Wed Sep 12, 2007 9:49 am

You measure the frequency response within a certain limit. Like +- 3 dB. So all that means is that at 20 kHz it isn't down more than 3 dB. It does'nt mean there's no audio outside 20-20000 Hz. But of course the Nyquist-Shannon theorem (or rather the laws of physics) prohibits frequencies over half the samplerate.

C00kie · Post by **C00kie** » Wed Sep 12, 2007 10:38 am

jupiter8 wrote:You measure the frequency response within a certain limit. Like +- 3 dB.

In this case it's plus or minus 0.3dB.

M-Audio Ozone frequency response