Should Rockbox come with a PDF of a measuring tape we can use to calculate the circumference of our heads? Because as far as I know, every person hears sound slightly differently from the next person... Resonant frequencies dictated by head density, width between ears and overall shape, low-end and high-end hearing ability rolloff due to age... My Dad perceives bass louder than I do, and I hear more treble (the acknowledged 'you're-getting-crusty-in-your-old-age' factor).
... All these stats could lead to the inclusion of a bio-, horoscope- or (even better) a love-match calculator in Rockbox! TRULY mainstream! (if my old Nokia's 'bonus' features were anything to go by) > -----Original Message----- > From: mat holton [mailto:[EMAIL PROTECTED] > Sent: 28 November 2006 10:30 > To: Rockbox development > Subject: Re: rockbox-recorder-20061122 - volume > representation messed up > > 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! > > .
