This repo contains the configuration files for the living-room stereo.
I've used this setup with a few different loudspeakers:
- Early-70s Bose 901 Series II. These need some quite dramatic EQ, which originally would be done with the Bose equalizer box, but I'm using DSP software instead.
- Early-80s Kef Reference 103.2. These are lovely, musical, British "large bookshelf" monitors. They don't need a lot of EQ, but I want to be able to use the DSP as a tone control.
Amplifier is a Wadia 151, which is basically a very nice USB DAC power-amp.
The source is a Raspberry Pi.
The stereo is configured for Spotify, Bluetooth and Airplay.
- Using raspotify, the Raspberry Pi shows up as a Spotify Connect device.
- Using bluez-alsa, it can be a Bluetooth speaker.
- Using shairport-sync, it's an Airplay audio device. This is handy for movies as well as music; we can watch video on a laptop and have sound from the stereo, with quite good lip-sync.
Playback from these sources is routed via CamillaDSP to apply EQ for the loudspeakers. The setup steps are really nicely documented here.
-
The
/etc/default/raspotifyconfiguration file sets up 'raspotify' to play to the 'loopback' ALSA device, and adds an event handler (for notification when the track changes -- later). -
The
/lib/systemd/system/raspotify.serviceconfiguration file sets all the environment variables and parameters to run 'raspotify' as a service. -
The
/var/cache/raspotifydirectory has thecamilladspexecutable and configuration file. The DSP config in this case includes various hand-crafted artisanal IIR (biquad) filter settings to make the loudspeakers sound the way I want them to. -
The
/var/cache/raspotify/eventscript is work-in-progress... experiments for triggering logs and actions. -
The
/usr/local/etcdirectory has the shairport-sync.conf configuration to send Airplay output to the loopback device where it's processed by camilladsp.
--
(Wadia DAC/amp is the upper box, and Raspberry Pi is in the lower one)