The command pasuspender is used to temporarily suspend the pulseaudio sound server while another command is running, thus allowing access to alsa. This can be helpful in situations where you want to use programs or commands that depend on alsa for audio output or input and need exclusive access to the sound card.

Use Case 1: Suspend PulseAudio while running jackd

Code:

pasuspender -- jackd -d alsa --device hw:0

Motivation: The motivation for using this example is to suspend the pulseaudio sound server while running jackd, a software sound server that provides low-latency audio input/output.

Explanation:

• pasuspender is the command used to suspend pulseaudio temporarily.
• -- is used to separate the arguments for pasuspender from the arguments for the following command, in this case, jackd.
• jackd is the command to be run.
• -d alsa specifies that jackd should use the alsa sound system.
• --device hw:0 specifies the audio device to be used by jackd. In this example, it is set to hw:0, which refers to the first audio device.

Example Output: When running the above command, pulseaudio will be suspended, and jackd will be started with alsa as the sound system, using the first audio device. The output of jackd will depend on the specific configuration and settings used.

Conclusion:

The pasuspender command is a useful tool for temporarily suspending the pulseaudio sound server and allowing access to alsa for programs or commands that require exclusive access to the sound card. The example provided demonstrates how pasuspender can be used to suspend pulseaudio while running jackd with alsa as the sound system.