JACK audio connection kit jackd daemon fails to start on RaspberryPi

I am running Raspberry Pi image 2012-07-15-wheezy-raspbian.zip and I have a CMedia 108 USB audio adapter installed RPi. Trying to start jackd using built in audio jackd -r -d alsa -d hw:0 fails...

Pyfluidsynth errors

I am attempting to get pyfluidsynth up and running. The problem is that I am not able to even run the sample code provided on the download page. Here is the relevant code: import time import...

How do I configure JACK audio server to automatically use a specific card?

I'm running Ubuntu 12.04 studio on a HP Pavilion dm1 4200sg netbook. It's pretty much a fresh install. I try to start jackd server by running jackd -R -d alsa and it fails with output: JACK...

Capture 192 kHz audio using Python 3

I need to capture 192 kHz audio for some bioacoustics experiments using Python 3. I have the hardware, a Sound Devices USBPre 2 sound card, a microphone with good frequency response curve up to...

SuperCollider without jack server

One of the requirements in my project is to reduce runtime footprint on an embedded system. It looks like jackd is required on Linux and seem like it's currently a hard dependency and it cannot...

how to call stdout.write from subprocess.Popen?

I'm trying to log a command executed with subprocess.Popen() to a UDP socket via the stdout. I've seen attempts on the net but none of real success at least in my case. Some people tried to...

gsvideo cant play video on pcduino with processing

I installed processing on pcduino and also installed GSVideo version 1.0.0 When I run a video I get the following error cannot connect to server socket err = no such file or directory cannot...

How to start a process with realtime priority (jackd) with upstart?

I'm trying to start jackd with realtime priority at boot with an upstart script but with no success so far. I'm using ubuntu server 14.04. My upstart version is 1.12.1. If I start jackd without...

How to setup jackd and guitarix with real-time priority under Raspbian?

I am trying to get guitarix and jack running on the Raspberry Pi 2 (+ Cirrus audio card) with raspbian. When starting jack via qjackctl, I get the errors Cannot lock down 82278944 byte memory area...

Capture Audio pipe in Pure Data

I'm using shairport-sync, on a Raspberry Pi, and want its audio output to go into Pure Data and then to the speakers (the Pd patch only contains a link between [adc~] and [dac~]. I first tried to...

Clojure & Overtone: Jackd not launching

I'm trying to use Overtone but when I launch it, I get an error about jackd. [email protected]:~/Desktop/clojuretest$ lein repl REPL started; server listening on localhost port 59002 user=> (use...

[Pyo/Jackd/PulseAudio]: Jack Error: Unabel to create JACK client (CromeOS/CROUTON/Precise)

Trying to get the PYO music module to work on my Chromebook (Chroot Dev) (ARM7 processor) (Precise Penguin/ubuntu 12.04) pyo: >>>import pyo pyo version 0.7.7 (uses single...

RasberryPi A2DP Sink - pause issue (PulseAudio, Bluez)

I'm trying to create a Bluetooth A2DP sink (receiver) then output the audio to a vorbis radio stream (LAN only). Basically I want this as a bluetooth add-on to a squeezebox (squeezelite)...

Cannot get JACK Audio/Netjack working over LAN

I'm trying to stream low latency audio between 2 raspberry pis. Both gstreamer and ffmpeg induce 2+ second delays for me. I've played around with Jack Audio and locally on a single pi it seems...

Docker: JACK server is not running

I'm running a host of docker containers with ROS, for controlling a robot. One of the container has to play some audio files through the sound_play package. However it returns the error Cannot...

Dockerfile - How to pass an answer to a prompt post apt-get install?

In my Dockerfile, I am trying to install jackd2 package: RUN apt-get install -y jackd2 It installs properly, but after installation, I can see the following prompt: If you want to run jackd with...

/etc/rc.local fails to launch script (supercollider) on boot

In Debian running headless on an arm-based single-board computer (C.H.I.P.), I have this in my /etc/rc.local #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser...

How to use jQuery in TinyMCE plugin?

I created a plugin in TinyMCE 4.3.12. The Plugin adds a button to the tool bar. When you click on the button, a small popup opens asking to provide an image file name (ex: my_image.jpg) Then, the...

Gnome-packagekit-data install error

I am in a bad state with Debian on my Pi, where I can no longer sudo apt-get install anything without error. For example $ sudo apt-get install autogen Reading package lists... Done Building...

creating a jack client from inside a docker container

I use jack to route audio between multiple sound cards in my pc. To record the audio i use a very convenient FFmpeg command which creates a writable jack client: ffmpeg -f jack -i <client_name>...

Jack server Cannot create new client on Raspbian Jessie Lite

I have installed Jack 2 on Raspberry Pi 3 with Raspbian Jessie Lite following the instructions from here https://github.com/iani/RPI-first-steps#step-3-get-and-install-jack-audio-drivers and added...

How to kill a forked child and its jackd subprocess in python

I am trying to implement a tray icon, that lets me control a process (jackd). Most notably I want to read the processes stdout and stderr for logging purposes I want to be able to kill the...

Basic software synthesizer grows in latency over time

I'm in the process of finishing a MIDI controlled software synthesizer. The MIDI input and synthesis work alright, but I appear to have a problem one playing the audio itself. I'm using jackd as...

Stream system audio to web browser (javascript) over network

I'm searching if is possible to bring up an environment made by 1 PC and 1 smartphone: PC1 running without screen and with JACK audio server (or alsa or whatever) smartphone connected to the...

Making Jack work with Alsa on Raspberry

I have a working Raspberry Pi 3B. The OS is Raspbian Stretch. Default on-board Broadcom audio disabled. USB SoundBlasterG1 audio card plugged in and configured as hw:0 nano...

Raspberry Pi Redirect usb microphone to hdmi audio

I have working HDMI audio and can see the usb microphone but I'm not sure what the ALSA settings are to send live audio out through HDMI. I don't want to record just patch through as I'm using it...

Problem (maybe on ALSA Config.) running jack.Client() on jackclient-python

I am trying to read the MIDI Input from a MIDI Keyboard on Ubuntu 18.04 64-bit. I decided to use JACK Audio Connection Kit (JACK) Client for Python. After the installation I want to run a simple...

jackd cannot use real-time scheduling within docker container

I cannot for the life of me figure out how to get jackd to run with realtime priority within a docker container. My goal is to get SuperCollider audio streaming over the internet using webrtc with...

GHC can't find foreign library (libjack.lib) that works with mingw gcc (but not mingw-w64)

Objective: I am writing a haskell program on Windows 10 using stack and the bindings for jack from hackage. Jack is installed and its lib/include paths are provided to ghc. My objective is to...

Python Install correct pyaudio

Python 3.6.9 (default, May 23 2020, 00:01:58) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import pyaudio >>> audio = pyaudio.PyAudio() ALSA lib...