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--- infra:rooms:av [2025/01/06 12:13] – external edit 127.0.0.1
+++ infra:rooms:av [2026/07/14 14:17] (current) – sound dodany zachary
@@ Line 10: / Line 10: @@
 ===== Audio =====
+There is sound assistant under https://sound.waw.hackerspace.pl/
+It can play music from Spotify, you can run it on hackerspace speakers or into your browser\\
 Gniazdo analogowego audio dostępne jest na mediaboxie. Domyślnie pod kabel mini-jack podpięty jest odbiornik bluetooth o nazwie "XY-BT" wiszący obok.
@@ Line 16: / Line 18: @@
 Mikser może być kontrolowany przez serial który wpięty jest w pudełko obsługujące sound.waw.hackerspace.pl. Odpowiedni suwak znajduje się na iot.waw.hackerspace.pl. Bardziej skomplikowane operacje można wykonywać softem producenta - port szeregowy wystawiony jest na sound.waw.hackerspace.pl na porcie 127.0.0.1:10001. (po odpaleniu ''socat -d TCP4-LISTEN:10001,fork,reuseaddr /dev/ttyUSB0,b38400,raw,echo=0,crnl'')
+===== Network audio streaming =====
+There are several options to play music/audio in general over network at the hackerspace
+  * AirPlay/RAOP - autoconfigured via mdns, available on Apple (native), and Linux devices (if enabled)
+  * Pulseaudio - autoconfigured via mdns, available on Linux (if enabled)
+  * ROC - manual configuration required, available on Apple, Linux, and Android
+  * spotifyd - autoconfigured via mdns, allows only playing music from spotify clients, available on devices with spotify apps.
+No options for general audio streaming on windows yet.
+==== Configuration (as needed) ====
+=== Linux ===
+For Arch Linux systems with Pipewire it is recommended to install ''pipewire-roc'' and ''roc-toolkit''
+''~/.config/pipewire/pipewire.conf.d/sound.hswaw.roc.sink.conf''
+<code>
+context.modules = [
+    {
+        name = libpipewire-module-roc-sink
+        args = {
+            remote.ip = 10.8.1.16
+            remote.source.port = 10001
+            remote.repair.port = 10002
+            sink.name = "Soundbox@HSWAW"
+            sink.props = {
+                node.name = "Soundbox@HSWAW"
+            }
+        }
+    }
+]
+</code>
+''~/.config/pipewire/pipewire-pulse.conf.d/10-network.conf''
+<code>
+{
+  "pulse.cmd": [
+    {
+      "args": "module-zeroconf-discover",
+      "cmd": "load-module"
+    },
+    {
+      "args": "module-raop-discover",
+      "cmd": "load-module"
+    }
+  ]
+}
+</code>
+After you apply configs, use $ ''systemctl --user restart pipewire'' if your audio server doesn't load properly, seek help.
+in KDE Plasma, check System Settings/Audio for ''ROC sink'' as that device can hide in audio tray settings.
+=== Android ===
+Streaming to Roc from Android requires an additional app - [[https://github.com/roc-streaming/roc-droid|roc-droid]] - and streaming doesn't work for everything. The app appears to be using screen capture APIs, and my guess is that DRMed apps can disallow (audio?) capture:
+  * streaming microphone works
+  * streaming some apps (eg. mobile firefox playing youtube) works
+  * streaming some apps (eg. spotify playing locally) doesn't
+  - Set 10001 as "port for source stream"
+  - Set 10002 as "port for repair stream"
+  - Set "10.8.1.16" as IP address of the remote receiver
+  - Select local audio source: Microphone or Currently playing apps
+  - Click "Start Sender"
+=== Apple devices ===
+AirPlay should be available out-of-the-box on both MacOS and iOS devices. There's (untested) [[https://github.com/roc-streaming/roc-vad|Roc Virtual Audio Device]] app if anyone wants to try Roc on MacOS
 ===== HDMI Matrix (legacy) =====
@@ Line 46: / Line 117: @@
   * Brak odczytywania EDID z TX*
   * Nieprzetestowane DVI source
+===== Soundsystem - calibrating volume =====
+Here are the stages sound goes through that modify its volume/gain:
+^ Stage            ^ Who can change it? ^
+| Source/user      | User*       |
+| Mixer input      | Admin/User* |
+| Mixer crosspoint | Nobody      |
+| Mixer output     | User        |
+| Amplifier gain   | Admin       |
+Going from the end:
+  * **Amplifier gain** should be set such that max gain of previous stages results in max loudness we want to allow. If set lower, it won't be possible to crank up volume as desired, which will encourage untrained users to mess with the amplifier. If set higher, we can damage the speakers, people's hearing, and it's likely noise/60Hz hum will be amplified. Gains between amplifiers (rooms) should be set such that all else being equal, both rooms subjectively sound exactly as loud.
+  * **Mixer output** is user-controllable via [[http://iot.waw.hackerspace.pl]] to adjust volume in a room/between rooms
+  * **Mixer crosspoint** is not to be changed. Given two rooms/outputs taking from the same inputs, changing gain here only causes confusion. Again, please do not change.
+  * **Mixer input**s should be set by admin such that all else being equal, different input devices subjectively sound exactly as loud. An exception is made to inputs such as AUX1 - since these sources are directly user-accessible, input gain is user-controllable via IOT to allow user to adjust volume to match