At Thu, 7 Sep 2006 11:29:54 +0100, Jochen Voss wrote: > > Hi Takashi, > > On Thu, Sep 07, 2006 at 12:09:05PM +0200, Takashi Iwai wrote: > > > > > -- s1.sh ------------------------------------------------------------- > > > > > #! /bin/sh > > > > > amixer set "PCM Capture Gain" 2 > > > > > amixer set "PCM Capture Gain" 0 > > > > > amixer set "PCM" 0 > > > > > amixer set "PCM" 80% > > > > > ---------------------------------------------------------------------- > > > > > > > > > > -- s2.sh ------------------------------------------------------------- > > > > > #! /bin/sh > > > > > amixer set "PCM Capture Gain" 0 > > > > > amixer set "PCM Capture Gain" 2 > > > > > amixer set "PCM" 0 > > > > > amixer set "PCM" 80% > > > > > ---------------------------------------------------------------------- > > > > I used 'amixer set "PCM Capture Gain" 20' now in s2.sh only. Was this > > > the plan? Result: there is now an audible crack when s2.sh is > > > executed, but the volume before and after the cracks still seems to be > > > the same. > > > > The crack doesn't matter seriously, but just the volume. > > The volume is the same. > > Why is everything assigned twice (e.g. first 0 then 2) in this test? > > > > I also tried something else: when I alternate between > > > ---------------------------------------------------------------------- > > > amixer set "PCM Capture Gain" 0 > > > amixer set "PCM Capture Gain" 20 > > > amixer set "PCM" 0 > > > amixer set "PCM" 80% > > > ---------------------------------------------------------------------- > > > and > > > ---------------------------------------------------------------------- > > > amixer set "PCM" 0 > > > amixer set "PCM" 80% > > > amixer set "PCM Capture Gain" 0 > > > amixer set "PCM Capture Gain" 20 > > > ---------------------------------------------------------------------- > > > the recording has alternating load and quiete stretches. Whatever this > > > might tell us about the ADC, it looks like a bug to me: the order of > > > setting the two controls shouldn't matter. Or am I confused again? > > > > Well, assume that "PCM Capture" and "PCM Capture Gain" are > > independent. If so, the above two should result in the same state. > > > > If it's not independent but the register 4 & 5 take single values > > (that was the behavior of your original implementation), the above two > > cases must make a clear difference: in the former case, the gain is > > below 0dB, and in the latter it's +10dB. Was it so through your > > tests? > > Yes, the recording had alternating load and quite stretches, > corresponding to the two settings. > > So both tests seem to indicate that for the AK5365 registers 4 and 5 > take only a single value. Correct? Yes. Then we need to take the controls back to a single one. Will do later. I still wonder whether this is also true for AK4524... > > Also, it's possible that I did make a silly mistake. Put a debug > > printk around ak->ops.write() in snd_akm4xxx_write() to check what > > values are written to register 4 and 5. > > I will try this in the evening. Thanks, Takashi ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
