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Rockbox mail archiveSubject: Re: rockbox-recorder-20061122 - volume representation messed upRe: rockbox-recorder-20061122 - volume representation messed up
From: mat holton <mat_at_lessermatters.co.uk>
Date: Tue, 28 Nov 2006 10:30:18 +0000 Philipp Pertermann wrote: > Paul Louden schrieb: >> In that context, 90% could actually be considered the same as >> -10%, as they're both "10% less than the full level" but since you don't >> have an absolute point of reference with dB, the negative numbers make >> perfect sense. > > Actually you do have an absolute point of reference: a full scale > swing of the signal. That's why it is called dbfs. But you are right > that this doesn't mean an absolute volume level as perceived by humean > ears. That is measured by db spl (sound pressure level), an other kind > of decibel. That describes the sound pressure relative to a sound that > produces a pressure change of 20uPa. > > What a pity that rockbox can not scale the volume in db spl. That's > impossible because it depends on the headphone and probably even on > how well the headphone fits into the ear. > Well, just add even more configurability. We can keep a database of headphone\ear types\sizes and use this information to calculate the necessary numbers! . Received on 2006-11-28 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |