Differences

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--- alsa_only_audio [2025/07/09 07:46] – ethan
+++ alsa_only_audio [2025/10/18 08:35] (current) – ethan
@@ Line 46: / Line 46: @@
   Subdevice #0: subdevice #0
 ...
 </code>
+card 1 and device 1 will be used for this guide. in most places, this is specified with **"hw:1,1"**. the first number is the card and the second is the device.
 =====mixing=====
@@ Line 66: / Line 68: @@
 pcm.!default plug:mixer  # set the default device to the mixer.
 </file>
+=====Bluetooth=====
+[[https://github.com/arkq/bluez-alsa|BlueALSA]] can be used to easily play audio on Bluetooth audio devices.
+the pcm and ctl 'bluealsa' is created automatically, and in most cases they can be used directly. see the project's wiki for more information on configuration.
+<file bash ~/.asoundrc>
+pcm.!default bluealsa
+ctl.!default bluealsa
+</file>
+you can use **bluealsa-cli** to get information on your Bluetooth devices.
+<code bash>
+$ bluealsa-cli list-pcms
+/org/bluealsa/hci1/dev_XX_XX_XX_XX_XX_XX/a2dpsrc/sink
+$ bluealsa-cli info -vv /org/bluealsa/hci1/dev_XX_XX_XX_XX_XX_XX/a2dpsrc/sink
+...
+Format: S32_LE
+Channels: 2
+Sampling: 96000 Hz
+Available codecs:
+        ...
+	LDAC:... [channels: 1 2 2] [sampling: 44100 48000 88200 96000] # supported sample rates.
+Selected codec:
+	LDAC:... [channels: 2] [sampling: 96000]
+...
+</code>
+====LDAC====
+on Sony and other brand products which support it, LDAC is a codec which provides a high bit depth and sample rate. BlueALSA supports LDAC, but some packages are built without it.
+on Arch Linux, the package in the AUR disables LDAC support so you must edit the PKGBUILD or compile it manually. uncomment/pass --enable-ldac.
+if wokring correctly, BlueALSA will automatically use LDAC on supported devices, and adjust the sample rate depending on the audio.
 =====S/PDIF multichannel=====