rydan

Trying to build a CV LFO using the m4l tri~ object. With a tri~ simply connected to the output, using 10Hz as frequency, I get a nice full scale triangle output, however, when using something like 0.1Hz frequency, I get a really low output level. I'm using a MOTU interface, not DC-coupled, so that shouldn't be the problem. (Also, if I just set a line~ object to "1", i get a constant full scale output)

Also, if I instead set the tri~ object to 30 Hz, and then frequency modulate it using another tri~ object at 30 or so Hz, I instead get clipping due to over level. Why would frequency modulation ever increase the output level above that of the unmodulated oscillator?

tri-output-level-when-using-really-low-frequencies

If you'd connect a scope to the output of tri~, you can see that the output level is indeed unexpectedly low. However, tri~ is an antialiased triangle generator, which is very useful for high frequencies. Apparently it breaks down at sub audio frequencies. Since aliasing is not a problem with such frequencies, you could use the triangle~ object as well.

Ah, right, tri~ is the anti-aliased one. Probably explains why the shape was a bit strange at low frequencies as well. =)

tri~ output level when using really low frequencies?