an oscilloscope is not an oscilloscope

Hello, Dr.Lion/RSM however, I still made a datagram of the work Here it is attached in the archive, I specially wrote a program that would display volume levels - from 0 to 15 - running through the values sequentially - and forming on the DAC the corresponding levels. (control register number 7 disabled = #FF; I tried changing other registers, the picture was consistently the same - from times at times) Recorded on SB Live! 5.1 - maybe this unit itself gives interference, but fact - after the value "15" the transition to the value "0" is accompanied by terrible fluctuations - and even before the start of the transition (jitter inside the sound?). Small values are also accompanied by fluctuations (can be seen again from graphics) - and the fluctuations in values themselves occur in the middle already set value. In general, I cannot explain this rationally (there is only one sensory the filling of the situation is some kind of nonsense :D), because the length of the fluctuations corresponds to a frequency of about 8 kHz (the given signal is quantized at frequency 48 kHz, the oscillation takes about 6 measurements). Maybe it's a matter of containers that are located at the output of AY? By the way, not only the signal I output had such interference, but also simple FM music also gave interference (I didn’t give a sample, I think it’s just not needed), however they are well camouflaged against the general background (they are almost inaudible).P.S. It is clear that the sound amplifier, sound capacitors, wire from the speck to sounds, etc. introduce their own error, but the fact that there was wheezing even without sound is fact... P.P.S. Somehow in the reviews there was a quote written <> - we were talking about AY. Maybe that's exactly what and what was meant? File: gluchit_sound.rar http://zx.pk.ru/attachment.php?attachmentid=1905

Press RESET immediately, Valery Grigoriev! On Mon, 07 Nov 05 13:36:29 +0300, Valery Grigoriev wrote: VG> Recorded on SB Live! 5.1 - maybe this unit itself gives interference, but VG> here is a fact - after the value "15" the transition to the value "0" is accompanied by VG> with terrible fluctuations - and even before the start of the transition (jitter inside VG> sounds?). Small values are also accompanied by fluctuations (visible again VG> same according to the schedule) - and the fluctuations in values themselves occur in VG> in the middle of an already set value. In general, I can’t explain it wisely VG> I can (there is only one sensory content of the situation - some kind of nonsense VG> :D), because the length of the oscillations corresponds to a frequency of about 8 kHz VG> (quantization of the given signal occurs at a frequency of 48 kHz, it takes VG> fluctuation of about 6 measurements). Maybe it's a matter of the containers that cost VG> output AY-ka? It's a matter of wire inductance. Look with an oscilloscope with normal with a probe - this should not happen.