Re: [Alsa-user] Set Default ALSA Device

[Darrell Berry]

i'm not sure how good the resampling is in alsa -- from my experience, the best upsampling you will get is from mplayer -- its processor-intensive, but its interpolation is good -- have a look at http://dalston.ku24.com/cluster/archives/000130.html for the settings i've used facing a similar problem on a VIA chipsset -- note that if your processor has an FPU (most do!) then you should be able to use floating-point interpolation, which is even better...of course all that is dependant on you using mplayer as your media player!

of course you would still be ebtter off with a card that does native 44.1...

cheers

Bill Unruh wrote:

On Mon, 31 May 2004, Darrell Blake wrote:

Is it possible to set the default ALSA device? I have an Audigy2 NX card and
have to create a device (called 48000) to upmix 44000hz sample rates to
48000hz so they sound right. My ~/.asoundrc file looks like this at the
moment...

pcm.48000Hz {
type plug
slave {
pcm "hw:0,0"
rate 48000
}
route_policy default
}

Is there any way to get ALSA to automatically use this device so the sound
always sounds right?

Darrell

You would be far ahead if you got a soundcard which was capable of 44100
rate from the word go. Time interpolating will always make your good
soundcard sound like a cheap soundcard-- increase noise and all types of
distortion. And if you are going to do it well (ie not introduce too
much distortion) it will be slow with large latency.

I have never understood Creative's insistance of designing
fixed frequency sound cards and then at a frequency which is not the
standard CD frequency.


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