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Old 9th May 2004, 03:37 PM   #81
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Default RE: RMAA

I disagree. First of all RMAA is more flexible because we have the open source codes for measures, so you can do whatever you want with the programming.
Second - they use 1 kHz tone in the measurements of THD, then you can adjust the level - if you want it different then -3dB below FS, and get the FFT spectrum. Well, there is nothing to argue about, everyone prefer what he likes more.
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Old 9th May 2004, 03:40 PM   #82
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a) off topic
b) before you do statements like that, please try spectralab.
c) i would be happy with open source that gives me same versatility like spectralab, but did not find until now
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Old 9th May 2004, 03:42 PM   #83
Bricolo is offline Bricolo  France
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I remember that a member here wrote about a linux spectrum analyser
maybe you'll find some sources this way
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Old 9th May 2004, 04:33 PM   #84
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Quote:
Originally posted by till
a) off topic
b) before you do statements like that, please try spectralab.
c) i would be happy with open source that gives me same versatility like spectralab, but did not find until now
a) sorry about that
b) I did, as well as WinMLS and EFT5.
c) you've found it - http://forum.rightmark.org/topic.cgi?id=4:480
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Old 11th May 2004, 04:07 PM   #85
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Default RE: measures

I forget to add - here is the test description:
http://audio.rightmark.org/downloads/tests.pdf
and here - are the sources for the measurements:
http://audio.rightmark.org/downloads/tests.dll.4.0.zip
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Old 18th May 2004, 01:15 AM   #86
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I want to try another section between the reciver and the DACs digital input. I want follow Jim W.s suggestion and use a isolational amp. Also i want get rid of the 74xxx chip.

would this work, or is a single ended inverter with higher ouput impedance ok here?
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Old 25th May 2004, 04:00 PM   #87
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next board for the DAC in progress
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Old 25th May 2004, 09:29 PM   #88
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Doesn't iso amp have very small bandwith ???
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Old 25th May 2004, 09:35 PM   #89
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check the datasheet

DATA RATE: 80M Baud, typ
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