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| wiki:raspberrypi [2015/05/09 20:35] – [Running JACK] autostatic | wiki:raspberrypi [2017/02/17 20:32] – [Disabling unneeded services] Updated jackstart script URL cheekyisgreat | ||
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| ===== Disabling unneeded services ===== | ===== Disabling unneeded services ===== | ||
| - | By default the RPi runs quite some services that are not really needed or even get in the way when setting up a real-time, low-latency environment. One way to disable such services from running and chewing up precious CPU cycles is to write a little script, an example can be found here: https:// | + | By default the RPi runs quite some services that are not really needed or even get in the way when setting up a real-time, low-latency environment. One way to disable such services from running and chewing up precious CPU cycles is to write a little script, an example can be found here: https:// |
| Breaking down the script: | Breaking down the script: | ||
| Line 107: | Line 107: | ||
| http:// | http:// | ||
| + | ===== GPIO (On-board) audio ===== | ||
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| + | Various sound card hats and addons are available for high quality audio. These sound cards use the GPIO I2S (and I2C) pins on the GPIO header. Some sound cards have inputs as well as outputs. Sound cards range from 2 channels (in/out) to 8 channels out and 6 channels in. | ||
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| + | A short list of GPIO sound cards can be found on eLinux :\\ | ||
| + | http:// | ||
| ===== On-board MIDI ===== | ===== On-board MIDI ===== | ||
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| export DBUS_SESSION_BUS_ADDRESS=unix: | export DBUS_SESSION_BUS_ADDRESS=unix: | ||
| - | And to add the following lines to ''/ | + | And then add the following lines to ''/ |
| <policy user=" | <policy user=" | ||
| <allow own=" | <allow own=" | ||