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Old 20th May 2016, 02:34 PM   #1
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Default Noise measurements with Arta _ tutorial ?

Hi !
i am trying to make some noise measurements on usb audio interfaces.
I have seen used the Arta software.
Unfortunately i looked at the manual and fainted ... it is very difficult to understand.
I would like to ask if anyone is aware of an Arta tutorial somewhere dealing specifically with noise meauserements.
However any other advice for a better software would be much welcomed and appreciated, possibly not too expensive.
But i am very interested in the subject of noise measurement.
And sorry if i have missed a thread about this topic but i am sincerely confused.
The only SW i have been able to use is Audacity and only to make some recordings.
Thanks a lot to anyone.
Kind regards, gino

Last edited by ginetto61; 20th May 2016 at 02:51 PM.
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Old 20th May 2016, 05:11 PM   #2
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Hi !
nobody using it ?
i am attaching a noise spectrum of my usb headset ... am i on the right way ?
As i said above my main goal is to measure noise in usb audio interface.
I guess this is the 1st step.
Second one will be to try some distortion measurements.
Next year ...
Thanks a lot indeed.
Regards, gino
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File Type: png noise capture test.PNG (231.7 KB, 255 views)

Last edited by ginetto61; 20th May 2016 at 05:15 PM.
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Old 20th May 2016, 10:50 PM   #3
GDO is offline GDO
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What sort of noise are you after?

https://www.youtube.com/watch?v=y1g4Z_nZQms

You will be disappointed, these usb things are dead silent...
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Old 20th May 2016, 11:21 PM   #4
SY is offline SY  United States
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Quote:
Originally Posted by ginetto61 View Post
As i said above my main goal is to measure noise in usb audio interface.
You might start by defining specifically what you're trying to do. What you have there is rather vague and makes little sense the way it's written.
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Old 20th May 2016, 11:37 PM   #5
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If you want to make measurements of the noise floor and single-frequency THD measurements with something that shows the frequency spectrum then I can recommend REW (Room EQ Wizard). I was able to take measurements like this:

Click the image to open in full size.
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Old 21st May 2016, 01:29 AM   #6
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With a little knowledge of what's going on any number of free tools will give you what you want, even Audacity.
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Old 21st May 2016, 08:59 AM   #7
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Originally Posted by GDO View Post
What sort of noise are you after?
https://www.youtube.com/watch?v=y1g4Z_nZQms
You will be disappointed, these usb things are dead silent...
Hi ! thanks for the valuable advice.
I am almost only interested in usb audio interfaces.
I have to see to believe. And i guess they are not all silent at the same level.
Moreover when i will be more educated i would like to try some distortion measurement ... maybe next year.
This year is the year of noise
Thanks again, gino
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Old 21st May 2016, 09:05 AM   #8
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Quote:
Originally Posted by SY View Post
You might start by defining specifically what you're trying to do. What you have there is rather vague and makes little sense the way it's written.
Hi ! i want you to get graph of noise from usb audio interfaces.
Later i will try some distortion measurement.
This SW looks quite ok. But i have to learn the basic.
The graph above is taken from my usb headset/mic.
But i have already tested also a Roland Quad-Capture usb interface ... it is quite silent if i have done the test correctly.
I will post the graph soon.
The idea is to use this SW to see if i can erase those famous bumps in the noise floor of my other and better Tascam interface.
Thanks a lot again, gino
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Old 21st May 2016, 09:08 AM   #9
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Originally Posted by CharlieLaub View Post
If you want to make measurements of the noise floor and single-frequency THD measurements with something that shows the frequency spectrum then I can recommend REW (Room EQ Wizard). I was able to take measurements like this:
Click the image to open in full size.
Hi ! yes ! this is exactly what i am looking for.
Thanks a lot for the valuable advice.
I will look for this SW also. But it seems that also this Arta works.
I am completely new to this kind of SW and instruments.
I think it could be a good point to start learning something ?
Thanks again, gino
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Old 21st May 2016, 09:14 AM   #10
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Originally Posted by scott wurcer View Post
With a little knowledge of what's going on any number of free tools will give you what you want, even Audacity.
Hi ! thanks a lot for the kind and very valuable advice.
Problem is that i do not know well where to start.
I have Audacity and used it for some recordings. I did not know that it can be used to measure noise.
I can imagine that i can record for instance with input shorted and what i will get is the noise and this would be extremely interesting for me.
I am interested in just two things ... noise and distortion.
The aim to spot an usb audio interface with very low figures for both (with pc connected of course).
At a resonable price.
Then i would be quite done because i will have an excellent pc source.
Thanks a lot again, gino
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