[LAU] Calculating absolute played(!) volume

Roger gurusonic at gmail.com
Fri Oct 16 02:02:56 CEST 2020

On 16/10/20 5:54 am, Jeanette C. wrote:
> Hey hey,
> for a project I am wondering, if the absolute output volume of a pair 
> of headphones, directly connected to a soundcard, can be gained from 
> the settings?
> I have a Delta 1010. Inside alsamixer the volume for the DACs is set 
> in dB. Is there a straight relationship between these settings and a 
> connected output device? My pair of headphones, IIRC, have a 
> resistence of 60 Ohm.
> Any help is appreciated. A good pointer will do. If there is a method 
> without special measuring equipment, I'd be happy. If not... So be it.
> Best wishes,
> Jeanette
Testing labs would use a dummy head with embedded calibrated microphone. 
I doubt it would be possible to do it accurately otherwise. You may get 
an approximate measurement simulating with a home made setup similar to 

Any results you get would be only for those particular headphones; even 
with the same impedance two different sets may have drivers with vastly 
different efficiency.

Personally I just use a level which is comfortable although even that 
can be deceptive. I recently bought a pair of Austrian Audio Hi-X55 
headphones and they are so clear I often find I have them rather loud 
without realising, having been used to my older Audio Technica cans.



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