Audacity Forum

bossleecool wrote:ya am also facing same challenge too.

The same challenge as what?

The Nyquist filter: bandpass2(<sound>, 8000, 100) is equivalent to the Matlab biquad filter with parameters: b0: 0.00454278 b1: 0 b2: -0.00454278 a0: 1.00454 a1: -0.83554 a2: 0.995457 so your code could be written as (in SAL): set b0 = 0.00454278 set b1 = 0 set b2 = -0.00454278 set a0 = 1.00454 set ...

This code: set d = bandpass2(a * (d + (noise() * ditherlevel)),8000,100) * 10 ;d = BPF(a * (d + dither)) * 10 could be written as: set input = a * (d + (noise() * ditherlevel)) set d = bandpass2(input, 8000, 100) * 10 In fact, your code is identical to this: set input = hzosc(16000) * (0 + (noise() ...

Or you could use RESON (http://www.cs.cmu.edu/~rbd/doc/nyquist/ ... l#index447)

If you want the filter to become unstable and go into self oscillation, then I think you will need to calculate the biquad parameters yourself and use BIQUAD or BIQUAD-M functions rather than the BANDPASS2. On reflection, that's not going to work. The biquad function is protected against becoming u...

In the BANDPASS2 implementation, the biquad parameters are defined to keep the filter stable even at very high Q values. If you want the filter to become unstable and go into self oscillation, then I think you will need to calculate the biquad parameters yourself and use BIQUAD or BIQUAD-M functions...

Try multiplying by 1000 instead of by 10. in the 4th line (or use a much higher level of noise).
Is that what you want it to do?

Non wrote:1. I alt+tab / pop effect window.

Not sure what you mean. Do you mean "i + Alt + Tab", or that: You press "Alt+Tab" ?
Either way, that's not a standard Audacity shortcut. "Alt + Tab" is generally reserved by the OS window manager for switching between windows.

That's a little newer than the recommended version (3.0.2). Does this problem occur all the time? If you launch Audacity and just add a new mono or stereo track ("Tracks menu > Add New"), is the track info panel malformed in that way all of the time? (a stereo track should look like this: ...

So regardless of the 2 approaches, when the recording is converted from stereo to mono, are we saying it is impossible for there to be a binaural effect as the Hz differences which rely on stereo have been nullified in the mono channel? By definition "binaural" is a stereo effect (https:/...