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<DIV dir=ltr align=left><SPAN class=214000615-07022005><FONT face=Arial
color=#0000ff size=2>Plans are underway for such a reference site that will be
usable by UK AG nodes and (but don't tell anyone!) probably everyone else too. I
don't have a clear idea of how long this will be, but funding has been secured
and work is starting... No good to you now, Natalia, but maybe next
time.</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> owner-ag-tech@mcs.anl.gov
[mailto:owner-ag-tech@mcs.anl.gov] <B>On Behalf Of </B>Osland, CD
(Chris)<BR><B>Sent:</B> 07 February 2005 14:24<BR><B>To:</B> Natalia Costas
Lago; ag-tech<BR><B>Subject:</B> RE: [AG-TECH] audio levels and sound
quality<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS" color=#0000ff>I
offered to set up a reference site which emitted a number of</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>audio test streams (white noise, pink noise cyclically looped,
music,</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>speech, whale sounds (!)) some years back but the funding
didn't</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>come through from the UK sources funding the rollout of
AG</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>system at UK eScience centres. And I'm not allowed to work
on</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>something that isn't funded.</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS" color=#0000ff>But
it's still a really good idea, if someone else doesn't have
my</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>funding restrictions. Each source could come from the
same</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>machine on a different stream, and users could use a
particular</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS" color=#0000ff>one
by muting all but one of them at a time.</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>There could even be an extension where a software sound
meter</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS" color=#0000ff>on
the reference machine showed the incoming level from a given</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>site - a software generated video stream.</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>Without such a reference, you just have to go through
the</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>whole level-determining sequence that has been described
before:</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005> <FONT
face="Comic Sans MS" color=#0000ff>in ClearOne:</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005></SPAN><SPAN class=193011214-07022005><FONT
face="Comic Sans MS" color=#0000ff> mic
coarse gain</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>mic fine gain</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>mic channel output
level</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>output channel
level</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005> <FONT
face="Comic Sans MS" color=#0000ff>in RAT:</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>SEND level</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005> <FONT
face="Comic Sans MS" color=#0000ff>in computer:</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>LINE input level</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>LINE output level</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005> <FONT
face="Comic Sans MS" color=#0000ff>in RAT:</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>RECEIVE level</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005> <FONT
face="Comic Sans MS" color=#0000ff>in ClearOne</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>line input gain</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>output channel leve</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005> <FONT
face="Comic Sans MS" color=#0000ff>on speaker (or amplifier if speakers are
passive):</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005>
<FONT face="Comic Sans MS" color=#0000ff>gain</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>getting everything around the 0 dB / yellow
area.</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS" color=#0000ff>If
you have a sound level meter, the level of speech</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>within the room used for testing should be around 70
dBA,</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS" color=#0000ff>as
should the level of speech being replayed through</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS" color=#0000ff>the
speakers.</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>Cheers</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=193011214-07022005><FONT face="Comic Sans MS"
color=#0000ff>Chris</FONT></SPAN></DIV>
<DIV><SPAN class=193011214-07022005> </SPAN></DIV>
<P><FONT face=Arial
size=2>____________________________________________________________________</FONT>
<BR><I><FONT face="Comic Sans MS" color=#ff0000 size=4>Chris
Osland</FONT><B></B></I><B></B><B></B><B><FONT face=Arial size=2></FONT></B>
<FONT face=Arial
size=2> </FONT><I>
<FONT face=Arial size=2>Office tel:</FONT></I><FONT face=Arial size=2> +44 (0)
1235 446565</FONT> <BR><FONT face=Arial size=2>Digital Media and Access
Grid </FONT><I> <FONT
face=Arial size=2> Medialab tel:</FONT></I><FONT face=Arial size=2> +44 (0) 1235
446459</FONT> <BR><FONT face=Arial size=2>BIT
Department </FONT><I></I><I>
<FONT face=Arial size=2>Access Grid room tel</FONT><FONT face=Arial
size=2>:</FONT></I><FONT face=Arial size=2> +44 (0) 1235 445666</FONT>
<BR><I><FONT face=Arial size=2>e-mail:</FONT></I><FONT face=Arial
size=2>
C.D.Osland@rl.ac.uk </FONT><I>
<FONT face=Arial size=2>Fax:</FONT></I><FONT face=Arial size=2> +44 (0) 1235
445597</FONT> <BR><B><FONT face=Arial size=2>CCLRC Rutherford Appleton
Laboratory</FONT></B><FONT face=Arial size=2> (Bldg. R18)</FONT> <BR><FONT
face=Arial size=2>Chilton, DIDCOT, Oxon OX11 0QX, UK</FONT> <BR><I><FONT
face=Arial size=1>[The contents of this email are confidential and are for the
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<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> owner-ag-tech@mcs.anl.gov
[mailto:owner-ag-tech@mcs.anl.gov]<B>On Behalf Of </B>Natalia Costas
Lago<BR><B>Sent:</B> 07 February 2005 12:15<BR><B>To:</B>
ag-tech<BR><B>Subject:</B> [AG-TECH] audio levels and sound
quality<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Hi everybody,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>We are trying to set all the audio levels of our
6 AG nodes in a proper way. I am looking for a way to check that all audio
levels are the same (is there any audio tool available?).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Any help about this matters would be greatly
appreciated. We are having lots of problems to get good audio.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanx in advance.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Kind regards,</FONT></DIV>
<DIV><FONT face=Arial size=2>Natalia.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>-----------------------------------<BR>Natalia
Costas Lago<BR>email: <A
href="mailto:natalia@cesga.es">natalia@cesga.es</A><BR> <BR>Centro de
Supercomputacion de Galicia (CESGA)<BR>Avenida de Vigo, s/n Campus Sur
<BR>15706 Santiago de Compostela - SPAIN<BR>Tel: +34 981 56
98 10 <BR>Fax: +34 981 59 46 16<BR><A
href="http://www.cesga.es/">http://www.cesga.es/</A></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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