Digital Sine Wave Generator

[Jud]

I have no idea at all whether any of this is great or cr*p, or how much the non-free stuff costs, and you probably already know about each of these.  But just on the off chance there's something of interest, here are a couple of links:

http://www.listeninc.com/us/products/sc_randd.html

http://www.qsl.net/dl4yhf/spectra1.html

And a collection of links -

http://www.radio.imradioha.org/PC_Based_Test_Gear.htm

[PeterSt]

Thanks a bunch Jud. I realize that you were working on this when I did too and posted ...

I'm still dizzy of my own search from today, and I will look at it later.

Again, thanks,
Peter

[GerardA]

This one makes me happy when I use it:
http://www.audiotester.de/

[CoenP]

Hi Arvind,

Answer is easy or difficult, depending on what you want to do with it. So, please be exact on the purpose you need it for.

Peter

Hi Peter,

I need to test the room for frequencies which create standing waves.

Best regards,

Arvind

Since the NOS 1 does something to standing waves I think Peter has a good point to use XX and the NOS1 all the way and use the cleanest signal possible.

I think timing the standing waves on a sweep isn't very exact, but may lead to usefull results. You can allways check with a narrower range afterwards or on the specific frequency you found.

I guess you are planning to determine the standing waves with your ears. You might want to evaluate the sweep on different locations considering the bellies and knots of the resonances, especially with the LF. Maybe this is not neccessary with the NOS; I am not familiar with the mechanism behind the reduction of standing waves.

Would you like to share your plan and why you bother about them?

Regards, Coen

[arvind]

Hi Coen,

Many years earlier when I had just built my music room, I used to get a lot of resonance in the lower bass freq, 60Hz to 63Hz. This continued even after introducing XXHE & NOS 1 in my system. To correct this an audio consultant added  a few bass traps & it significantly reduced this problem.

Since the version 0.9z-8-3a, I have noticed that the upper bass (100Hz to 120Hz)is a bit difussed (not tight enough). This wasnt noticed by me untill the earlier versions.

In order to test the same, I was looking for a programme which could generate pure tone signals, which I could play like my music file through PC/NOS 1/Amps/speakers. This would help me locate the problematic freq & then I could consider bass traps or other methods to tame them.

Best regards,

Arvind

[arvind]

Hi Gerard,

Thanks for the link, it served my purpose.

Best regards,

Arvind