[Csnd] aliasing and the mpulse opcode

The Csound Mailinglist
1

Hi,

I always thought that impulse trains were not band-limited. So I verified using the output of the mpulse opcode (a Dirac Comb?). As one could have predicted pitch is incorrect and also there is some amount of DC, but spectral analysis doesn’t reveal any aliasing. Does this sound right or am I missing something?

Thanks!

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

2

That’s right. The pulses will generate images that fold over the harmonics in the baseband, so you won’t see the aliasing in the usual way.

Prof. Victor Lazzarini
Maynooth University
Ireland

3

Now I get it. Thanks, Victor.