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Rockbox mail archiveSubject: Re: output level equalisationRe: output level equalisation
From: <Gajdos_at_metatem.net>
Date: Mon, 1 Dec 2003 13:58:43 +0100 (CET) Just did a recording and listening test with JBR20 and 100Hz, 1kHz, and 10kHz sine tones digitally thru a Yamaha 01V console, and when the word clock source is set correctly there are no strange tick-tick-tick sounds here. However, the JBR locks on to the incoming S/PDIF clock only when it's recording - not when it's playing - so one has to make sure that the console acts as a slave to the JBR when playing, otherwise we'll get the dreaded tick-tick-tick effect, which is caused by the difference between un-synced clocks. Performing the tests made me realize that it would be really nice if the JBR's S/PDIF output could stay active even when it's not playing, because it takes the 01V a couple of seconds to lock on to the JBR's S/PDIF signal. Now I also notice that pausing the JBR shuts down the S/PDIF output as well. Not nice. Can the MAS be set up to allow the JBR to lock on to the incoming S/PDIF even while playing, so that it can act as slave in sync with its master? Speaking of which: http://www.eweek.com/print_article/0,3048,a=113454,00.asp Sorry. Couldn't resist. Please refrain from commenting on it here. Anyway, the MP3-encoded sine tones sound really good. Actually surprisingly good. /JG On Mon, 1 Dec 2003 at 22:54, ten Velde family wrote: > I have the Recorder - but it shouldn't really matter what model I have for > this - I'm just trying to find out how flat a frequency response I have > using the phones output to a line in on the mixer. > > I tried it using unmodified sine waves, and the frequency response is > virtually flat. The only strange thing I noticed is that when playing the > sine waves, there were regular tick-tick-tick noises on almost all of them, > the frequency of which differed according to which frequency sine wave I > was playing. Must be something to do with the way MP3s are encoded, there > was certainly no sign of these when playing the wav files on the PC. > > Cheers > John Received on 2003-12-01 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |