EEVblog Electronics Community Forum
Electronics => Beginners => Topic started by: Flump on October 03, 2013, 08:55:25 am
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Hi All :)
I would like a program for my computer that can analyse the signal
coming out of a home made microphone preamp/tone circuit to show the level (mW),
waveform and frequency response.
I would prefer free software as I'm not sure how far I will pursue this project
however I don't mind spending a bit of money on software if its going to be
useful for other stuff too.
Can anyone suggest software for the above ?
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I usually use Baudline (http://www.baudline.com/) for this kind of thing.
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that looks good but im using windows (7) :rant:
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I'm not sure if you are looking for this, but RMAA is the de facto standard for audio measurements on PC:
http://audio.rightmark.org/products/rmaa.shtml (http://audio.rightmark.org/products/rmaa.shtml)
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Audacity
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NAND - rmaa wont download properly for me
each time i try to install it says error opening file,
tried about 3 or 4 times now.
http://audio.rightmark.org/download.shtml (http://audio.rightmark.org/download.shtml) (top link)
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Visual Analyzer
http://www.sillanumsoft.org/ (http://www.sillanumsoft.org/)
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NAND - rmaa wont download properly for me
each time i try to install it says error opening file,
tried about 3 or 4 times now.
http://audio.rightmark.org/download.shtml (http://audio.rightmark.org/download.shtml) (top link)
It was working for me when I installed it into a different folder eg. C:/foo/
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Several years ago I used this and it was very helpful. Not sure if this is the type of product you have in mind but if it is it's worth a try on the free version, for sure.
http://www.trueaudio.com/rta_selection_guide.htm (http://www.trueaudio.com/rta_selection_guide.htm)
I wasn't building electronics but I was trying to figure out how to improve the acoustics for a high end hifi system. I started with the free version and ultimately upgraded to the 1/24th octave version. If you like it you might want to try one of the upgrades. I used a microphone and I had a set of good equalizers - those plus the the software running on the PC provided a lot of insight as to what was happening from 20Hz to 20kHz. Again, not sure what you are doing but if you are looking at optimizing an overall system I can almost promise you that you can tweak the electronics sixteen ways to Sunday and everything you do will have some effect on the ability of the system to accurately reproduce sound from the source to the preamp to the amp or anywhere else in the signal path but all of that added up togther might have less impact than the acoustics of the room. The room dimensions (including the ceiling height) and the shape of the room and the construction materials and the location of the speakers can sometimes dwarf the electronics impact. You can make electronics with low distortion and flat (+/- 0.25dB) from 0 to 100KHz but good luck getting the room to go from 32Hz to 20kHz within +/- 1.5dB, or even +/-3dB.
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I've been using Zelscope for a simple oscilloscope app that works in Windows.
http://www.zelscope.com (http://www.zelscope.com)
They have a free 2-week trial, and the price after that is only $10.
I usually look for free software first, especially for simple things, but I'm happy that I paid the $10. Along with a real oscilloscope, Zelscope has been a really handy tool.
Sadly, it has not been updated in many years. It's really a shame because it has so much potential for development.
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use tor vergatas great software
http://www.sillanumsoft.org/ (http://www.sillanumsoft.org/)
and enjoy