Re: What does 0dB refer to? (Logitech USB Speakers)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, 12.04.08 21:32, Rene Herman (rene.herman@xxxxxxxxxxxx) wrote:

> 
> On 12-04-08 15:35, Lennart Poettering wrote:
> 
> > On Sat, 12.04.08 12:15, James Courtier-Dutton (James@xxxxxxxxxxxxxx) wrote:
> > 
> > My I thus assume that we can say that for all but the last element in
> > the series 0db means avg input power equals avg output power, and for
> > the last one 0db means max? That would fit on what you are saying but
> > also match my usb speakers, not depending on the existance of a
> > "Master".
> 
> If we add in ISA cards, it's not a very generic assumption at least. For 
> example on my cs4236, "master" is -94,5 to +12 dB with 0dB at "87" in the 
> integer scale.
> 
> It's a "Master Digital Gain" -- not sure what that "digital" implies as it 
> very much seems to be positioend in the post output mixer analog path...

Maybe the driver should add an internal offset to the dB scale, to
guarantee that 0dB is max, instead of just copying the hw specs?

Lennart

-- 
Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net         ICQ# 11060553
http://0pointer.net/lennart/           GnuPG 0x1A015CC4
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

[Index of Archives]     [ALSA User]     [Linux Audio Users]     [Kernel Archive]     [Asterisk PBX]     [Photo Sharing]     [Linux Sound]     [Video 4 Linux]     [Gimp]     [Yosemite News]

  Powered by Linux