Narf03
Posts: 243
Joined: Mon Jun 11, 2012 3:44 pm
Location: Malaysia

Sound / Volume

Sat Jun 30, 2012 6:14 am

First of all, the quality of music being played is bad, i think somebody said the driver is still in experimental stage. So, we skip that quality issue for now.

About the volume, if I plug a earphone directly into the Pi, the maximum volume is pretty low, i used the "alsamixer" command to adjust the volume to the max, and whatever software i used to play music, has maxed, the adjustment on the earphone also maxed, comparing plugging the earphone to a PC and to the PI, it gives very significant difference(max out all), playing the same mp3 file. The only different is I am playing it from debian(Pi) and from Win7(PC). Need to know is it supposed to be like that ? or the driver improvement they are doing will somehow increase the volume too ?

Thanks.

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geep999
Posts: 28
Joined: Fri May 18, 2012 10:20 pm
Location: East Herts, UK
Contact: Website

Re: Sound / Volume

Sat Jun 30, 2012 7:59 am

I've no complaints at all about the sound quality or volume whilst using OpenELEC RPi.arm-devel-20120614193607-r11315.
I've tried both analog sound via headphones and via HDMI to the TV speakers. Tested with .mp4 videos (aac sound) and .ogg audio.
So I would suppose any problems are more likely due to software, rather than the RPi hardware.
Perhaps try other OS. OpenELEC is very easy to install and I've found it a very useable media player.
http://sources.openelec.tv/tmp/image/openelec-rpi/ &
http://wiki.openelec.tv/index.php?title ... spberry_Pi
Cheers,
Peter
Last edited by geep999 on Sat Jun 30, 2012 8:07 am, edited 1 time in total.

KenT
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Location: Hertfordshire, UK
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Re: Sound / Volume

Sat Jun 30, 2012 8:00 am

The alsa drivers are alpha so there could be improvements to sound quality as the drivers are improved. The bad quality of the sound is also due to the hardware of the pi analogue output, it was built to cost. I suspect the same also applies to the max volume.

A simple amplifier would improve the volume but if you want better quality sound without a HDMI tele you may need a usb dongle or a hdmi to audio convertor. I've been looking on the forums for one of these that works with the pi but haven't found one.
Pi Presents - A toolkit to produce multi-media interactive display applications for museums, visitor centres, and more
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W. H. Heydt
Posts: 10904
Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: Sound / Volume

Sun Jul 01, 2012 12:27 am

I'm not having sound problems.

I'm routing the analog audio through a Cables2Go Audio Matrix Switch, part #52065.

I would presume that at least some of the volume issue with headphones is simply going to be that the RPi doesn't have much power available to drive them.

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