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wiki:raspberrypi [2017/05/18 22:59] – [Running JACK] - more specifics to help newbies colinsullivan | wiki:raspberrypi [2020/03/15 17:50] (current) – [On-board audio] autostatic | ||
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===== On-board audio ===== | ===== On-board audio ===== | ||
- | The on-board chipset of the RPi has quite some limitations unfortunately. It only does playback and because of it' | + | The on-board chipset of the RPi has quite some limitations unfortunately. It only does playback and because of its PWM (Pulse Wide Modulation) based design it is not really suited for real-time, low-latency audio processing. It does work with JACK now that it has MMAP support but don't expect it to run without glitches at lower latencies. |
Other drawbacks of the analog audio output: | Other drawbacks of the analog audio output: | ||
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Another option is to comment or remove the kernel module for the onboard soundcard (snd-bcm2835) from ''/ | Another option is to comment or remove the kernel module for the onboard soundcard (snd-bcm2835) from ''/ | ||
- | ===== Audio software repository ===== | ||
- | There' | ||
- | |||
- | ==== Adding the repository ==== | ||
- | |||
- | wget -O - http:// | ||
- | sudo wget -O / | ||
- | sudo apt-get update | ||
===== Using JACK ===== | ===== Using JACK ===== | ||
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<allow own=" | <allow own=" | ||
</ | </ | ||
+ | | ||
+ | WARNING: In Raspbian Stretch I had to do the following instead of modifying '' | ||
+ | |||
+ | Create a new file ''/ | ||
+ | |||
+ | <?xml version=" | ||
+ | < | ||
+ | " | ||
+ | | ||
+ | < | ||
+ | | ||
+ | <policy context=" | ||
+ | <allow own=" | ||
+ | <allow own=" | ||
+ | </ | ||
+ | | ||
+ | </ | ||
+ | |||
+ | |||
=== Using an external USB audio interface === | === Using an external USB audio interface === |