@jameslo Hey, thanks for that! It attenuates them more than the vcf~ method... but between the overtones and noise, the string sound is still recognizable... and the range of the filter is so wide that normal speech ends up sounding very thinned. I'd assume you're supposed to be able to set the width of the filter range, but anything above 0 immediately opens a big notch.

@s.elliot.perez said:

@whale-av Do you ever find yourself unable to close or save a patch if you turn off DSP while using ASIO4All? This happens consistently, even when ASIO4ALL is working, and I have to do a force quit.

@whale-av Do you ever find yourself unable to close or save a patch if you turn off DSP while using ASIO4All?

I tried lowering the q to 10, but this didn(t seem to help.

I also tried setting an osc to be subtracted, but the osc sound ends up persisting.

Yeah, I'd be willing to put up with some latency- please share your method?

I have a violin that sends both audio and midi to the computer and am also using another microphone in the same vicinity. I'm trying to use the midi note value of the violin as a notch filter to filter out the sound of the string's acoustic vibration:

I can hear that this attenuates the sound a little bit, but not by that much. Any ideas for improving this? I tried adding additional vcf~ for overtones, but that didn't make a noticeable difference.

@whale-av

OK, after hours of messing with this, the solution is quite simple... as you can see in the screenshots of my previous post, the block size in Pure Data is 64 while the size in the ASIO4All settings is 1024. Making sure these values match (in the Presonus control panel too) and setting them to 512 seems to work (setting it lower doesn't seem to work, the webcam audio is probably holding the other devices back) . Thanks for giving me some ideas!

@whale-av OK, I tried raising latency t0 1024 and setting everything to 48k. The result is that it gets noisy sooner (in a rhythmic, pulsing way). Here are screenshots of my settings. See anything else that might be wrong?

I tried returning PD to 44.1k and turning off resample while leaving latency at 1024, but it's the same as the original problem....

@whale-av Just double-checked and no, it stays green when it glitches.

I just used the USBView app recommended by the ASIO4All documentation and it looks like all three of my devices have at least one line of "bmAttributes" where it says that "Synchronization Type = Asynchronous", which I guess means that they don't sync with my computer's clock and are thus causing this problem. Am I out of luck?

@whale-av Hey, thank you. It works well for about five minutes and then the sound gets glitchy/noisy for a couple of minutes bit before returning to normal for a while.

In the ASIO4ALL advanced settings, I have the following toggled on:

PreSonus AudioBox iTwo
---Out 2x 44.1kHz 24Bits
Logicool BRIO (webcam)
BOSS GP-10
---IN(GP-10)

*ASIO Buffer Size is 512 for everything
*Latency compensation is set to 32 samples in and out
*Allow Pull Mode is off
*Always Resample 44.1kHz<->48Hz is off (PD is running in 44.1kHz)
*Force WDM Driver to 16 Bit

Any idea what could be wrong? I guess I could try ditching the BRIO webcam's audio for a mic that goes into the Presonus if reducing the amount of devices from three to two would help.

This seems like a problem in general on Windows, but Pd still seems to give me the option to use Multiple Devices in the Audio Settings.

I feel like I've been able to do this before, despite the repeated console warning:

separate audio device choice not supported; using sequential devices.

but now when I try it I can only get the audio input of the first device. Is there any way to get both? If not, why is this option here? Is setting up some kind of virtual sound card to combine the different devices into one the only way of doing this? (and if so, what do you recommend?)