Audacity Forum

Those are not audio signals. "Audio" by definition refers to sound, and as anything above 20kHz is inaudible to humans... Signals in the 30-60kHz range require a sample rate greater than 120kHz. Does your sound card support this? No, my soundcard only goes up to 20 khz I believe. However, I have a ...

Anyone know how to get the frequency/hertz of a given audio signal?

I've been trying to find a way to do it in audacity (with the analyze functions) but have been unable to thus far.

The hz signals I'm trying to figure out will be in the 30,000 to 60,000 hz range (lol)

Hey there, Just had a quick question. Anybody know if the Nyquist code is available somewhere for the Effect 'Normalize' (or a similar effect) and the function Generate 'Tone'? I'm trying to automate a process for editting an audio file (my other thread has details on that) and these are the last st...

It works like a charm

Thanks again Trebor!

Trebor, I love you. Nuff said.

On a more serious note, Thank you!!! I'll be testing this out today. You've been a great help Trebor!

Been working on this issue for several days now. Don't have much progress to report. I started coding other LISP programs though (to get me more familiar with the language) so expect progress soon.

Let me know if any new thoughts strike you

There should be a simple way of doing this with nyquist code: if left channel is less than 0.6 then make amplitide of right channel zero, that sort of thing. Ya, I figured there was. Still honing my skills with LISP though, I'm used to a heck of a lot less of parenthesis. We'll see if steven comes ...

From looking at the original waveforms, you might also benefit from some "fake samples." It takes a couple of pulses for the system to settle in, so putting two or three "fake" pulses ahead of the valuable data would cause the settling to happen on the known lead-in set and not the data. Alternativ...

I found this code somewhere on the forums: (setf v (snd-fetch s) Apparently it returns amplitude. Is it possible to run this code through an entire <1 second file, and if the amplitude is less than 0.4 silence that section? If only LISP had if statements and curly braces instead of just lots... and ...

@Trebor That was exactly what I was looking for. I'm very close now, just need a few touchups (that really shouldn't be too tough). So here is what I started with http://i292.photobucket.com/albums/mm15/seanybob1143/1-1.png Then after running this code: (sim (mult (aref s 1) -0.4) (mult (sum 0.9 (sc...