Add route_policy copy to HDA-Intel.conf for capture

Since some digital mics have the phase-inversion problem in one channel,
adding both channels for mono stream results in the noise.
Use route_policy copy to avoid that situation.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/src/conf/cards/HDA-Intel.conf b/src/conf/cards/HDA-Intel.conf
index 800281ed142dbf4f468e4d1ef76c32b2db8e8dfe..d3ac00210f9b9cfc43df9089aaae024b224eddc3 100644 (file)
--- a/src/conf/cards/HDA-Intel.conf
+++ b/src/conf/cards/HDA-Intel.conf
@@ -57,6 +57,8 @@ HDA-Intel.pcm.default {
                        max_dB 30.0
                        resolution 121
                }
+               # to avoid possible phase inversions with digital mics
+               route_policy copy
        }
        hint.device 0
 }