From dj hohum Sent Fri, Jun 22nd 2007, 08:53
From dj hohum Sent Fri, Jun 22nd 2007, 08:53
On 6/22/07, Pete <xxxxxxxx@xxxxx.xxx> wrote: > I have not used the cem3320 as a high pass or band pass but I know they > sound nice. These where available at one time. Check out the audio samples, > > http://tellun.com/motm/diy/tln428/TLN-428.html Thanks for the pointer, at the very least it's another schematic that makes use of the 3320. To my ears, however, the lowpass was about what I expected. It sounds alright when not pushed but as the resonance goes up and the cutoff comes down it has a quality that I don't care for. At any rate, it does seem that perhaps it's best used for highpass/bandpass applications. The other samples were interesting, but, it's difficult to tell if you are hearing the 3320 or if the other patch choices are the dominant factor. In other words, without a side by side comparison I can't tell if the 3320 is better in the same application as some other filter. > Now that I have two different ssm filters, I still want the cem3320 filter. > It simply sounds different from the others. It is very neutral sounding and > clean. Can you express what "neutral sounding" and "clean" mean in terms of shaping a typical VCO waveform? > When I get a chance I will record a few samples of each of the > filters and post them here. Its too bad Doepfer is discontinuing the cem3320 > filter. Better get one if they are still available before its too late. I don't need one. I have four or five 3320s in my junkbox and so I'm looking for the best circuits to build around them. In particular, if there are subtle design choices in synths that use the 3320 that lead to an interesting sound then that's what I'd like to hear about. I also have a handful of other chips that would choose over the 3320 to build a filter around so I'm trying to determine what stands out about the 3320? Where does it shine? What kinds of applications is the 3320 a first choice for some people? The digisound modules seem to be the best choice for a diy effort at this point but I'm not opposed to doing my own pcb layout or even veroboarding a design if I like it well enough.