SynthModules

The highest frequency I can get out of a tight loop toggling the aux 
jack is 39 KHz.  Note the waveform is only 0 - 3 volts on the aux 
output.  The rise and fall time is nearly 50% of the duty cycle.  
Adding a single goto statement drops the frequency to 34 KHz so there 
is some room for very simple programming.

The highest frequency I can get out of a tight loop using a all four 
DAC channels is 860 Hz. If I drive only a single channel I can get 
this up to 3.2 KHz but there is jitter. There may be a better way to 
drive a single channel with less jitter.

Using the sound command I can generate sounds up to about 20 KHz. It 
appears that the 'note' parameter does not really work correctly. I 
get 50% of the frequency that I program it to use. However, using the
sound command to generate sequences of notes is kind of interesting.
I'll have to play around with this some more.

Here's an octave sequence:
sound p8,[500\130,500\147,500\165,500\175,500\196,500\220,500\247]

Dave
--- In SynthModules@yahoogroups.com, "mrboningen" 
<darkflametwentythree@h...> wrote:
> hi all. i see that there are various bits of software available 
which 
> turn the PSIM into an LFO/LFO's. i have a couple of questions about 
> this. 
> 
> firstly, how smooth are they at very slow rates, e.g. if you put a 
> really slow sine on the pitch of an oscillator, can you hear any 
> stepping?
> 
> next up, at the other end of the frequency spectrum, how do these 
> LFO's sound when driven into the audio rates? i know the PSIM is
not 
> designed to do audio, but it must be possible? how does it sound? 
how 
> easy would it be to implement PWM etc.
> 
> cheers,
> 
> gregg.