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Rockbox mail archiveSubject: Re: dB volumeRe: dB volume
From: BlueChip <cs_bluechip_at_webtribe.net>
Date: Fri, 19 Mar 2004 20:20:53 +0000 At 19:56 19/03/04, you wrote: > > > To summarize: I vote for dB. :) > > > > Me too! > > > > Btw: does anybody actually use settings above 92% / 0dB? > > > >I avoid it at all cost, because the distortion (clipping) is really bad. >Once I tested with a full swing sine wave and the scope. This is where I got >my 93% (for Aux) from, I think that was "electrically" 0dB, although today I >learned different. Maybe I'll test again sometime. > >Jörg What real tests will show is anybodies guess ...But "by the book", 92 is correct :) In the 3587, the volume range in 0...127, representing -114...+12dB in 1dB steps Each Rockbox step is therefore (127/100) == 1.27 So at 92, this resolves to (int)(1.27*92) == (int)116.84 == 116 = 0dB You may also note that (int)(1.27*93) == (int)118.11 == 118 = 2dB So 92=0dB and 93=+2dB ...it is not actually possible to choose +1dB with Rockbox! How ironic that the oveflow occurs at that point! _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockbox Received on 2004-03-19 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |