Linux Sound

Jacks.png

Abreviations



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Usefull Commands



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Scripts



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ALSA - Advanced Linux Sound Architecture



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Pulse-Audio

To direct microphone to the speakers:
The way I learned the name of the output device (sink) and input device (source) was to use these 2 commands:


Create a loopback - P.A.type system:


To apply echo cancellation:


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Jack Audio

JACK Audio Connection Kit:
https://jackaudio.org/applications/

Working with Internal Audio Routing:
https://music.tutsplus.com/series/working-with-internal-audio-routing--audio-21859

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paprefs

PulseAudio Preferences (paprefs) is a simple GTK based configuration dialog for the PulseAudio sound server. Please note that this program can only configure local servers, and requires that a special module module-gsettings is loaded in the sound server.


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IC7300's USB Devices



The IC7300's USB interface has the following devices:

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Plug-in USB Sound Cards/Devices



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How to Switch Audio Device on the Fly



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Audacity

apt install audacity:

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Alpha Audio

https://www.audiopluginsforfree.com/free-alpha/

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lv2

LV2, an acronym for LADSPA Version 2, is a set of royalty-free open standards[1] for plug-ins and matching host applications. It includes support for the synthesis and processing of digital audio and CV, events such as MIDI and OSC, and provides a free alternative to audio plug-in standards such as Virtual Studio Technology (VST) and Audio Units (AU).
https://en.wikipedia.org/wiki/LV2

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Cleanfeed

Cleanfeed is multitrack, multi-party live audio and recording using only a browser.
https://cleanfeed.net/

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References

Independent ALSA and linux audio support site - MultipleCards:
https://alsa.opensrc.org/MultipleCards

How to use Pulse to manage sound on Linux::
https://opensource.com/article/17/1/linux-plays-sound

Understanding Linux Audio:
http://slackermedia.info/handbook/doku.php?id=linuxaudio

PulseAudio/Troubleshooting:
https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Muted_audio_device

Configuring Sound on Linux/HW Address: https://en.wikibooks.org/wiki/Configuring_Sound_on_Linux/HW_Address

How do you set a default audio output device in Ubuntu 18.04?:
https://askubuntu.com/questions/1038490/how-do-you-set-a-default-audio-output-device-in-ubuntu-18-04

How do you switch the audio out from the speakers to a USB speaker from the command line?:
https://askubuntu.com/questions/61798/how-do-you-switch-the-audio-out-from-the-speakers-to-a-usb-speaker-from-the-comm

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Glenn Lyons VK4PK
glenn@LyonsComputer.com.au
Ver:gnl20200130 - pre published v0.9