--- In AN1x-list@yahoogroups.com, "Mark Daborn" <darkest.yugo@n...> wrote: Is there anyone who can help explain to me what a "Self- Resonating" oscillator is and why the random LFO setting is called "Sample and Hold" ? > Maybe you mean a self-oscillating filter? On some filters if you crank the resonance up all the way, it will oscillate. You then can adjust the pitch with filter cutoff to tune it. Usually need to turn level of filter down to avoid speaker/ear damage! "Sample and hold" goes back to the days of voltage-controlled analog synths. Waves generated by the oscillators ( or white noise) usually had a signal strength of 0 to 10 volts. A waveform input is "sampled" by a pulse signal which produces a voltage corresponding to the point on the wave that was sampled. The voltage produced is then "held" at that point until another pulse signal samples the incoming wave's voltage. If the input signal is white noise, the output will be a random voltage pulse. Sampling rate is controlled by an internal clock ( knob usually marked in hz like an lfo - 1hz to 1000hz for example.) In Voltage-controlled analog synths, a random voltage can be used to modulate pitch, filter cutoff, or just about anything else.
Message
Re: interest
2004-03-12 by uralmoto2001