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Boost sound output of system overall (add a Pre-Amp slider to mixers)
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MEPIS Enthusiast   Joined: Fri Dec 15, 2006 8:07 pm Posts: 7356 Location: Skullcrusher Mountain, Santee, CA USA Has thanked: 322 times Have thanks: 1185 times 
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Post # 198649
 Boost sound output of system overall (add a Pre-Amp slider to mixers)Though SMPlayer can overcome this with its software volume control, I just found this page while looking for something else, and the method works on my laptop. This should boost sound levels in KMplayer, Kaffeine, embedded Flash video, and so on. I know we have had posts about low volumes for laptops; the desktop users can just crank up their amplified speakers.
I did not have an /etc/asound.conf file, but just created a new one: kdesu kwrite /etc/asound.conf and pasted in the code from the link:
in the Kmix mixer labled 'Pre-Amp." (Tip: in Kmix settings, turn on the labels for the sliders) Pushing it to the top will boost the sound over the previous levels for the entire system. _________________ Lenovo ThinkPad Edge 14 inch: 4 GB RAM, Intel i5-480 processor, Intel HD graphics and sound, Intel 1000 "n" WiFi, Acer CrystalEye webcam, Hot Keys, suspend, hibernate, KDE openGL effects: all work out of the box with 64-bit MEPIS 11! |
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| Thu Oct 22, 2009 3:41 am |
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MEPIS Guide  
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Post # 198661
Just tried this in 'bongo 9.10 - works with Flash audio, not with Rhythmbox - I guess it depends on how the app feeds the sound system - will try on Mepis later. My sound is a 7.1 hda-intel and my asound.conf is:
The blog links to the very useful looking Unofficial ALSA wiki: http://alsa.opensrc.org/index.php I followed this page to find out what channels/dev are available for use as pre-amp: http://alsa.opensrc.org/index.php/How_to_use_softvol_to_control_the_master_volume _________________ ::AMD Phenom II X2 550 BE 3.1GHz::Gigabyte GA-MA785GMT-UD2H::Crucial 2gig DDR3 1333MHz/PC3-10600::Hitachi DeskStar 1TB Hard Drive SATAII 7200rpm 16MB Cache:: ::O² Joggler:: |
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| Thu Oct 22, 2009 5:39 am |
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MEPIS Guide  Joined: Thu Jul 26, 2007 2:40 am Posts: 2037 Location: Bakersfield, CA Has thanked: 25 times Have thanks: 78 times
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Post # 198697
Stevo I just gave it a try and it worked, I just gave it a little boost, any more than a 1/3 boost and the sound was distorted.
_________________ Registered Linux User #380263 Registered Linux Computer #279395 Linux, working hard to save you $$$ - Get a clue, get Linux! Intel Pentium D 2.80GHz Intel Desktop Board D945GTP Intel ICH7 Ethernet Controller Intel ICH7 Audio nVidia GeForce 6200 Video |
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| Thu Oct 22, 2009 9:41 am |
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MEPIS is cool! 
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Post # 209041
That is a great tip and tonight we lay in bed trying to watch a movie on the laptop, and had to watch something else cause the sound was simply to low. I will try installing it in the morning and also I will add an entry in Sound tips and tricks in the wiki.
_________________ The simplest things are the hardest to solve P8Z68-V PRO, Intel i7 2600k |
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| Thu Dec 31, 2009 12:45 pm |
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