A low latency guitar effects processor suitable for running on a Raspberry Pi

Post by giantg2 » Tue, Mar 07, 2023, 6:51 PM UTC

mr_sturd wrote: post #39

sklarsa wrote: post #8

> Note that since the server program exposes an HTTP server you can actually navigate to the IP address of your PI from any device connected to the same wifi and control your pedal chain from there. That's a killer feature for me, hiding at the end of the README. I have a Fractal Audio FM3[0] at home, and the only way I edit my patches is using their editing software over a USB connection to the device. Adding the ab…

Don't go leaving it exposed if you connect it up to the venue's WiFi, if you're playing live. ;)

Post by londons_explore » Tue, Mar 07, 2023, 7:12 PM UTC

TylerE wrote: post #22

digitallyfree wrote: post #18

I'm still patiently waiting for future digital mixing consoles to do all processing in software on inexpensive x86 or ARM processors. Currently due to latency and reliability requirements all DSP work is done on dedicated chips or FPGA which brings up the BOM and engineering cost. They often have a small ARM/Linux module which is used for the displays and network control. The CPU tech is here today, and modern genera…

Modern CPUs are great if your watt (and thus thermal) profile is unlimited. Not so great when they aren't.

Post by tsegratis » Tue, Mar 07, 2023, 7:17 PM UTC

tcrenshaw wrote: post #14

DeathArrow wrote: post #9

I thought is hard to have low latency audio in Linux with stuff like PulseAudio.

Nah, low latency audio is absolutely possible, but not necessarily using pulse audio. Using either Jack for the low latency stuff has been the advice for years, but with the advent of pipewire you can mix and match without too much difficulty. A quick skim didn't turn up what audio backend this project is using, but I'm using patchbox with modep on my Pi4 as a bass pedal board and it's pretty much flawless low latenc…

Post by zamnos » Tue, Mar 07, 2023, 7:18 PM UTC

nightowl_games wrote: post #41

sklarsa wrote: post #8

> Note that since the server program exposes an HTTP server you can actually navigate to the IP address of your PI from any device connected to the same wifi and control your pedal chain from there. That's a killer feature for me, hiding at the end of the README. I have a Fractal Audio FM3[0] at home, and the only way I edit my patches is using their editing software over a USB connection to the device. Adding the ab…

Somebody should make a device that plugs into a fractal axe FX and hijacks the USB connection and exposes a web interface. Now that'd be cool!

Post by zamnos » Tue, Mar 07, 2023, 7:25 PM UTC

mr_sturd wrote: post #44

woudsma wrote: post #7

Very cool, I've ordered a Raspberry Pi touchscreen this weekend and it should arrive today. I want to make a MIDI sequencer with it, or at least play with the idea. I hope my old Raspberry Pi can work with MIDI (over USB) without too much latency..

I've seen it done with the Pico, where it acts as a midi device when plugged in to a host machine; not so sure about the main boards.