What is PulseAudio:
PulseAudio is a sound system for POSIX OSes, meaning that it is a proxy for your sound applications. It allows you to do advanced operations on your sound data as it passes between your application and your hardware. Things like transferring the audio to a different machine, changing the sample format or channel count and mixing several sounds into one are easily achieved using a sound server.
It is an integral part of all relevant modern Linux distributions
(Debian, Kali Linux etc.) and used in various mobile devices by multiple
vendors.
Features
The main features includes:
- Per-application volume controls
- An extensible plugin architecture with support for loadable modules
- Compatibility with many popular audio applications
- Support for multiple audio sources and sinks
- Low-latency operation and latency measurement
- A zero-copy memory architecture for processor resource efficiency
- Ability to discover other computers using PulseAudio on the local network and play sound through their speakers directly
- Ability to change which output device an application plays sound through while the application is playing sound (without the application needing to support this, and indeed without even being aware that this happened)
- A command-line interface with scripting capabilities
- A sound daemon with command line reconfiguration capabilities
- Built-in sample conversion and resampling capabilities
- The ability to combine multiple sound cards into one
- The ability to synchronize multiple playback streams
- Bluetooth audio devices with dynamic detection
- The ability to enable system wide equalization
The Warning Message during boot
My Kali throws me this warning:[warn] PulseAudio configured for per-user sessions ... (warning).
Debian variants also throws similar warning during boot.To fix this do
Open terminal and copy the following
leafpad /etc/default/pulseaudio
Find this line:
PULSEAUDIO_SYSTEM_START=0
Replace 0 with 1PULSEAUDIO_SYSTEM_START=1
Where,0 = don’t start in system mode, 1 = start in system mode
Reboot
Done...!!!
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