[linux-audio-user] determining source of latency (system info included)

[Nick Salamander]

i was finally able to get the correct settings using
gnome's alsamixer.  

unfortunately, i'm still experiencing latency
problems.

thanks for pointing me to the different mixers apps!


--- LinuxMedia <linuxmedia4 at netscape.net> wrote:
>  >>> i am experiencing the "system can't keep up"
>  >>> messages like crazy, even recording a single
>  >>> first track.
>  >>>
>  >>> often when i speak into the microphone, what
>  >>> comes out of the speakers sounds like it has
>  >>> a crazy chorus effect on it.
>  >>>
>  >>> i also wonder what the correct settings to use
> in
>  >>> the alsamixer gui are.
> 
>  >> I also get chorus-like (and echo-like) effects
>  >> when I'm doing...
>  >> ecasound -i:/dev/dsp -o:/dev/dsp
>  >> (in from card 1 and directly out to card 1)
>  >>
>  >> I have a soundblaster and this is what I did...
>  >>
>  >>- In KAMix
>  >>     - Go to the "Capture" tab
>  >>     - Turn off "Activate" under the "Wave
> Capture"
>  >>       control (make sure both are "unchecked")
>  >>
>  >>- In alsamixer
>  >>     - (de)activate capture on the "Wave" control
>  >>       (Use the left or right keys to move to
>  >>       "Wave", then press the space bar and it
> will
>  >>       toggle "CAPTUR" at the top of the "Wave"
> "level
>  >>       slider" (or whatever you call it)
> 
> > i'm afraid i don't even see a "Wave" item.  
> 
>  > i'm using gnome-mixer and alsamixer-gui.
> 
> Some of the mixers don't show all the controls.
> If you You're running the KDE Desktop, then get
> "KAMix". Otherwise try "QAMix" (KAMix is "QAMix
> for the KDE Desktop"). If not then go to a shell
> and type "alsamixer" (if installed) and use
> my above approach. alsamixer will show all the
> controls that your card offers (and even ones
> that your card doesn't offer)
> 
> Again... QAMix or KAMix not only show all the
> controls, but they're (much) easier to understand
> than alsamixer.
> 
> > i am using "Line" for the input,
> 
> Stick with "line in". The mic input
> is usually crappola.
> 
> > but i also seem to
> > need something called "ADC" selected for any
> capture
> > to happen at all.  but it always sounds
> horrendous.
> 
> I haven't run into that situation. I can't comment
> on it.
> 
> > i don't know if all this is a separate issue from
> the
> > latency issue or not.
> 
> When I did (the above), the sound improved immensly.
> But I haven't done any recording since discovering
> this. But I wouldn't be surprised if it is. If I'm
> not mistaken, I think that the sound is being moved
> around in channels that they don't need to be. And
> with this, you may be saturating the situation with
> too much sound. Anyways, I know the sound improved
> when I shut off Wave Capture. There was no more
> chorus-like effects.
> 
> Other things improved, but I don't want to confuse
> the (current) set of issues we're trying to solve
> for you.
> 
> Let me know how everything works out.
> 
> Rocco
> 



	
		
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