[ALSA] cmipci - utilize ADC48K44K bit
authorTimofei Bondarenko <tim@ipi.ac.ru>
Wed, 7 Nov 2007 14:49:57 +0000 (15:49 +0100)
committerJaroslav Kysela <perex@perex.cz>
Thu, 31 Jan 2008 16:29:19 +0000 (17:29 +0100)
commitfeb77712b0e780f04507cdda0529088ff0f3286f
tree190b0e7a0d2a63e4f7234ad9f2352199ed364c72
parentb98f9334e25c463fbfbb1cc468c66845e1c8e46a
[ALSA] cmipci - utilize ADC48K44K bit

Setting the ADC48K44K greatly improves capture quality at 48k sampling rate.
With this bit clear ADC does ZOH interpolation of every 22th sample at 48k.
At frequencies higher than 48k there ADC performs a little better with
ADC48K44K bit set.
At 44.1k ADC performs a little better with this bit clear.
At frequencies below 44.1k there is no difference.

Signed-off-by: Timofei Bondarenko <tim@ipi.ac.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
sound/pci/cmipci.c