planning audio on pi

2026-09-16 01:21:20 -04:00 · 2025-11-27 15:21:10 -05:00
parent 63871ccd17
commit 871e04a8ba
2 changed files with 64 additions and 0 deletions
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+# Use the Google Voice HAT soundcard as index 0 (primary card)
+options snd_rpi_googlevoicehat_soundcard index=0
+
+# Define a soft volume control for the speaker (Playback)
+pcm.softvol {
+    type softvol
+    slave.pcm "dmix"           # route through dmix for mixing
+    control {
+        name "Master"         # name of volume control
+        card 0
+    }
+}
+
+# Define a software volume (gain) for the microphone (Capture)
+pcm.micboost {
+    type softvol
+    slave.pcm "dsnoop"        # route through dsnoop for sharing
+    control {
+        name "Micro"          # name of mic gain control
+        card 0
+    }
+    min_dB -10.0
+    max_dB 50.0
+    resolution 256
+}
+
+# Set default devices to use the above for asymmetrical playback/capture
+pcm.!default {
+    type asym
+    playback.pcm "plug:softvol"
+    capture.pcm "plug:micboost"
+}
+
+ctl.!default {
+    type hw
+    card 0
+}