Problems with impulse and step response

[Botigris]

Hi!

I have a problem with the impulse and step response measurements. I don't think they are supposed to look like this. A few months ago I tried to measure my speakers on a laptop and the responses looked normal, while my desktop pc gives me this for the same files. Since then I reinstalled my laptop and now it also produces these results.

Thanks for the help in advace!
Botond

 

[John Mulcahy]

It would be better to post the mdat file.

 

[Botigris]

Okay here it is. This is the same file.

 

[John Mulcahy]

The measurement looks valid, though there is a very strong 50 Hz hum component and a lot of noise in general. You didn't select the input or output in REW so there is no information about what you used to measure, and the SPL hasn't been calibrated so the displayed levels are very low.

 

[Botigris]

Problem solved! You just have to change the scale from dBFS (which is selected by default) to %FS and it displays the measurements normally.
Thanks for the help! Your program is awesome!

Best regards,
Botond