Propeller Head Plaza

Posted by MAD MAN HARJU (A) on January 02, 2005 at 02:32:10

In Reply to: Re: Multitone Test Signals posted by Jon Risch on January 1, 2005 at 19:19:30:

Hi Jon

In the paper I was referring to “Multitone Testing…” they are trying to deal with the issue of overlapping IM-products with logarithmically distributed frequencies and for a 20 tone sequence in the 1 to 10 kHz band the frequencies are:

1000.0 Hz
1128.8 Hz
1274.3 Hz
1438.4 Hz
1623.8 Hz
1833.0 Hz
2069.1 Hz
2335.7 Hz
2636.7 Hz
2976.4 Hz
3359.8 Hz
3792.7 Hz
4281.3 Hz
4832.9 Hz
5455.6 Hz
6158.5 Hz
6951.9 Hz
7847.6 Hz
8858.7 Hz
10 000 Hz

This seems to work well but the problem that arises now is the frequency-resolution of the FFT.

I will mail you so you can get the address to my e-mail account at my university so you can send the PDF to me.

Enjoy Creating / Mad Man Harju