Audio system

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Revision as of 13:56, 19 July 2010 by Tsh (talk | contribs) (New page: This page is intended as a collection of all things audio. ==Audio Features== The Pandora has a high quality Digital to Analogue Converter (DAC). The sound signal from the processor is pa...)
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This page is intended as a collection of all things audio.

Audio Features

The Pandora has a high quality Digital to Analogue Converter (DAC). The sound signal from the processor is passed to an analogue amplifier, and at this point a signal from the volume control wheel is applied (so the OS has no visibility of the volume wheel, you have a final physical control over the volume). There is a built in microphone (on the right hinge), and a multi-terminal 3.5mm jack. Plugging in to the jack will disconnect the internal speakers. Note that ipod specific headphones use a different pin-out and are not compatible with the Pandora. Normal stereo headphones are compatible.

Boosting the volume

From urjaman[1]: If you want to over-amplify (will crackle if you overdo it == play loud recording with high volume) the audio with the software volume control (eg. I just watched firefly with my Pandora and really couldn't hear it properly with the integrated speakers because it was too quiet recording), modify .asoundrc(add the + line, without the +):

pcm.softvol {
        type softvol
        slave {
                pcm     "dmixed"
        }
        control {
                name    "Master"
                card 0
        }
+       max_dB 12.0
}

You can change the max_dB to suit yourself, but 12 is a good starting value if you have no idea (it's what the winamp preamp allows by default, some audio card drivers, etc). If it's too loud (crackling) after this, you can also just compensate with the XFCE mixer (or alsamixer from terminal) (the analog volume scroll wont fix this).


Recording

Search the forum for the link... There is a howto somewhere.