REW Sine wave generator THD

gerrittube

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Oct 17, 2020
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My AV System  
Preamp, Processor or Receiver
6SN7 - MOSFET - KT150
Hi,

What distortion could I expect using REW’s sine wave generator?
I have a laptop with a low budget built-in soundcard and a Steinberg UR242 external soundcard.
I now use a Velleman function generator, but it’s distortion (THD) is above 0.1%, spoiling my measurements.

Regards, Gerrit
 

John Mulcahy

REW Author
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Apr 3, 2017
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There is no distortion in the generator (unless you select the option to add some), the limiting factor is the audio interface you use for playback. The UR242 spec states line output THD+N 0.005 % at 1 kHz, -1 dBFS, with a 22 Hz - 22 kHz BPF.
 

gerrittube

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Thread Starter
Joined
Oct 17, 2020
Messages
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My AV System  
Preamp, Processor or Receiver
6SN7 - MOSFET - KT150
Hi John,
That looks very promising. I will try this A.S.A.P.!
Regards, Gerrit
 
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