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Old 08-10-2009, 06:06 PM
timg11's Avatar
timg11 timg11 is offline
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Join Date: Sep 2008
Posts: 423
Any method for channel volume compensation?

I have 20dB variations between the softest and loudest channels. This is not just between the HD-PVR and HDHomerun - there are differences between channels just on the HD-PVR. The differences are consistent, so it would be helpful if there was some compensation factor that could be applied to specific channels. Is there way to accomplish this?
HD300 extender with SageTV V9.1.10 (service mode), Running on Windows 7 (32 bit), E8400 3GHz dual core CPU, 4G RAM, Gigabyte GA-P35-DS3L motherboard. NVidia 8600GT; Viewsonic LCD on one output and Mitsubishi WD57734 HDTV via DVI/HDMI on other output. HDHomeRun HDHR5-4US tuner, Hauppauge 1512 HD-PVR2 connected to Google Fiber TV GFHD200.
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Old 08-10-2009, 09:26 PM
stevech stevech is offline
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Join Date: Dec 2005
Posts: 1,643
It bedevils all the cable companies. I guess it is just sloppy maintenance. (another example of: no competition = no excellence)

When I worked in a TV station, we had to keep our levels in tight spec or the FCC would cite us.
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Old 08-14-2009, 11:38 AM
banshee banshee is offline
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Join Date: Jan 2009
Posts: 25
Wouldn't it be relatively straight forward (assuming it made it up the priority lists) for Sage to allow manual adjustments to volume on a per-channel basis? And automatically modify volume when you change channels?

And I wonder if this could be done as a plug-in?
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Old 08-14-2009, 01:01 PM
tahoetim tahoetim is offline
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Join Date: Mar 2009
Location: Lake Tahoe
Posts: 112
The experts can tell me if I am wrong but I suspect that Sage is actually causing the issue. Once in a blue moon, my volume drops very low when I change channels and then ramps back up to the normal level over 10 seconds.

The other thing that makes me suspicious is the fact that these volume swings never happened before Sage.

I am not a programmer but I wonder if Sage uses the volume on the card from the last user? If I am watching a show on card A and then change channels to card B, could card B put out the last volume setting it used? It's sort of like the second or two of video you see when you change channels.

Or am I all wet?
WHS server, PVR150, PVR500, 2 HD200, 2 placeshifter laptops
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Old 08-14-2009, 05:34 PM
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toricred toricred is offline
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Join Date: Jan 2006
Location: Northern New Mexico
Posts: 1,729
It happens on the extenders as well so I believe that the problem is not the playback, but it might be the way Sage records.
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