[mythtv-users] Per Card Volume Control Bounty started

Tom Lichti tom at redpepperracing.com
Fri Sep 8 00:09:47 UTC 2006

Tom Lichti wrote:
> Anduin Withers wrote:
>>> This is a feature that has been mentioned many times, but frankly I
>>> doubt that it would help the real problem.
>> True to an extent, personally I have no problem with the relatively minor
>> volume differences between channels (differences one encounters using a
>> normal TV), of course I do have that remote and often adjust just based on
>> the show.
>> The volume difference between cards and to a lesser extent inputs can be
>> rather significant.
>> The ivtvdriver.org page:
>> http://www.ivtvdriver.org/index.php/Troubleshooting#Multiple_tuners_have_ver
>> y_different_audio_levels
>> Says it can be over 9 dB if you are unlucky. I imagine it is those unlucky
>> who most desire this feature. (I notice a not insignificant difference
>> between several 250s I have and a 350 for example)
> I have 2 250's and a single 150, and the 150 is SIGNIFICANTLY quieter 
> than the 250's. I bet it's more than 9 dB, actually. It's enough that if 
> I watch a recording from the 150 at comfortable volume, and then watch 
> one from a 250, the stereo will BLAST you until you can turn it down. 
> This is definitely card specific, not channel specific, at least in my 
> case. Give me a few minutes and I'll tell you what the difference is.
> Tom
Heh. I was right. My 150 read 61dB, the same recording, same channel, 
same time, on the 250 read 76dB (even a bit higher, but consistently at 
76). I think you would agree that 15dB difference is pretty significant. 
Is there a possibility of a driver tweak that could help?


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