Recent content by lucian_dusk

thanks, hadn't thought of that. do you know why specifically it's 2^30? interested in where this range was calculated (2^27.7 to 2^30.5 in the teensy's SVF's case).

Sorry to revive a dead thread, but today I've been looking into exactly this. Removing the state variable filter's Q limit of 5.0 and pinging the filter with a quick transient does result in long sinusoidal ringing --- the length of this tail can be adjusted pretty audibly between 5.0 and...

Hi Neal, I read the CV separately on a different analog input PCB that sums a panel potentiometer and the incoming CV signal. 5 channels are read and multiplexed on this PCB, the output of which is being read by one of the Teensy's analog read pins. I've found this works well (this is an early...

Sure! I'll finish up the build and get some documentation together.

Thanks, Paul. I'm sure this has been accomplished by now, but this fix means I have a functional Teensy 4.1-based breakout board for eurorack modular synth levels --- multichannel audio I/O and CV input. If it's of interest to anyone, I will gladly upload the PCB and schematic to github. I owe a...

Never mind --- after confirming it was a hardware issue, I replaced the CS42448 chip and it all works like a charm.

Hello, I'm having a bizarre issue with a custom audio board running a CS42448 codec. After assembling the board, I got external audio on the TDM inputs running to USB audio just fine, then waveforms in the audio designer running to the TDM outputs as well. I'm trying to combine them now and...

av500, this just completely saved my project --- I'd almost given up after several late nights of trying to debug the hardware. Paul --- you are a saint for including the link to this thread in the .cpp file! strangely enough, this issue has happened with every one of the three CS42448s I've...

hi paul! apologies for delay (ha), i've had computer troubles and had to migrate machines. in regards to "clean" feedback, here's a sample from my implementation in maxmsp that i've been working to recreate: https://soundcloud.com/ro-web/tapedelay-clean-feedback/s-dJM5JA2CtJq when i said...

oh, yes apologies! https://soundcloud.com/ro-web/delay10tap-feedback/s-teUMz6ldgry

Hi Paul, Sure, here's an audio sample. https://soundcloud.com/ro-web/delay10tap-feedback The setup is the same as in the example you posted: AudioConnection patchCord1(i2s_in, 0, mixer1, 0); AudioConnection patchCord2(i2s_in, 1, mixer1, 1); AudioConnection patchCord3(mixer1, delay1)...

One question for now --- do you know what causes the repeats in the feedback loop to continue to be pitch shifted? e.g. the delay feedback audio becomes far higher (or lower) in pitch than the delay object's initial output.

Hi @houtson, This is spot-on-the-mark exactly what I had in mind. Many, many thanks for an excellent implementation! I noticed that, after adjusting the parameter, the pitch hops back to regular speed fairly rigidly, so I added the same lowpass / interpolator-feedback function from my program...

Hi Paul, Fantastic! I've had a great time working with your code. I'd love to see what you've come up with when it comes to pitch modulation. Looking forward!

Fantastic work! Looking forward to playing with this!