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linux audio: added standalone easyeffects/pipewire/pulseaudio with links to preset
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Audio is an important point in a linux desktop environment
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## Pulseaudio
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## Sound Server
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[Pulseaudio](https://www.freedesktop.org/wiki/Software/PulseAudio) is the go-to
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audio server program for linux distributions.
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A sound server is software that manages use and access of audio devices.
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The following is a list of available sound servers.
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- [PulseAudio](./pulseaudio.md) is the go-to sound server program used for
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linux.
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- [Pipewire](./pipewire.md) is a modern graph based sound server.
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## Noise cancellation
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Noise cancellation can be easily achieved by installing
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[Noisetorch](https://github.com/lawl/NoiseTorch).
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Removing noise can be achieved by using
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sound processing software options for [sound server](#sound-server).
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An example for this is the noise reduction included in
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[easyeffects](/wiki/linux/easyeffects.md#noise-cancellation) for Pipewire.
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As an alternative software explicitly made for the reduction of noise can be
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installed.
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Belonging to the latter option noise cancellation can be easily achieved by
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installing [Noisetorch](https://github.com/lawl/NoiseTorch).
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After the installation modify the `Voice Activation Threshhold` to your needs.
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## Pipewire
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[Pipewire](https://pipewire.org) is a graph based processing engine for
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`pulseaudio` and `JACK`.
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It makes improvements for the input and output handling.
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### Installation
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If the current audio server program running is `pulseaudio`, you can just
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install `pipewire-pulse` (on Arch-based distros or according packages on other
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distros) and pipewire is running.
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Make sure to restart to be sure everything is running correctly.
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### Noise cancellation
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Noise cancellation can be easily achieved in `pipewire`-style by installing
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[easyeffects](https://github.com/wwmm/easyeffects).
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Make sure to check the box `Process all Inputs` and `Process all Outputs` to
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route everything through `easyeffects`.
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Make log out of your system afterwards.
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To enable noise cancellation navigate `Inputs` and click `Plugins`.
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After that click `Add Plugin` and select `Noise Reduction`.
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wiki/linux/easyeffects.md
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# Easyeffects
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[Easyeffects](https://github.com/wwmm/easyeffects) is a free and open-source
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GUI-software for applying sound effects and filters on input and output audio
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streams.
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Easyeffects uses [Pipewire](./pipewire.md) as
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[sound server](/wiki/linux/audio.md#sound-server).
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## Installation
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Easyeffects can be installed in most distributions by installing the
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`easyeffects` plugin.
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An installation via [Flatpak](./flatpak.md) is also possible.
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## Usage
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Easyeffects can apply `Effects` to input and output sound.
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### Noise cancellation
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Noise cancellation can be achieved by installing
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Easyeffects.
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Make sure to check the box `Process all Inputs` and `Process all Outputs` to
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route everything through `easyeffects`.
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Make log out of your system afterwards.
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To enable noise cancellation navigate `Inputs` and click `Plugins`.
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After that click `Add Plugin` and select `Noise Reduction`.
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### Presets
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Presets can be created by selecting `Presets`, setting the name and clicking the
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`+` to save it.
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It is then displayed in the list below from where it can be loaded or deleted.
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Presets are saved in the directory `~/.config/easyeffects/input` and
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`~/.config/easyeffects/output`.
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#### Recommended Presets
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The following is a list of presets that have been tested and only need slight
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configuration to adjust them to the specific system.
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- [tiyns voice input preset](https://github.com/tiyn/dotfiles/blob/master/.config/easyeffects/input/voice.json)
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is a list of different effects to achieve an enhanced quality of microphone
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sound for speach.
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wiki/linux/pipewire.md
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# Pipewire
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[Pipewire](https://pipewire.org) is a graph based
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[sound server](/wiki/linux/audio.md#sound-server).
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## Installation
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For clients that use the [PulseAudio](/wiki/linux/pulseaudio.md) API
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`pipewire-pulse` (on Arch-based distros or according
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packages on other distros) can be installed.
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It will automatically remove unneeded and conflicting PulseAudio packages.
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Additionally `pipewire-alsa` and `pipewire-jack` for JACK and Alsa clients are
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available.
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Make sure to restart to be sure everything is running correctly.
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## Sound processing
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For simple sound processing in the form of volume adjustment as well as setting
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the default input and output devices `pavucontrol` can be used as a simple
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mixer.
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For further sound processing the easiest way to do so is using
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[easyeffects](/wiki/linux/easyeffects.md) which features a wide range of effects
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to apply to sound streams including noise reduction.
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wiki/linux/pulseaudio.md
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# PulseAudio
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[PulseAudio](https://www.freedesktop.org/wiki/Software/PulseAudio) is a
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[sound server](/wiki/linux/audio.md#sound-server) distributed by the
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[freedesktop.org](https://www.freedesktop.org/wiki/Software/PulseAudio) project.
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## Sound Processing
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For simple sound processing in the form of volume adjustment as well as setting
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the default input and output devices `pavucontrol` can be used as a simple
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mixer.
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