Audacity Forum

Make-up-gain is a very common name for the post-compressing normalisation. It simply means that the effect "makes up" for the loss by the compression ratio (input 0 dB >> comp thres -6 dB/Ratio 1:2 >> output -3dB >> make-up-gain 0 dB or other). What equation do you want for RMS? The general ones or ...

I propose that you re-read all the previous posts to find the wrong values, which are stil not yet corrected. the value 0.2 is a duration, neither the amplitude nor anything else. It is best to write all functions down which you come across, with the proper arguments at the proper places. Additional...

You can try my plug-in: http://forum.audacityteam.org/viewtopic.php?f=42&t=67839&sid=1859c42b8441212aca110a8bd551f29e#p190928 The first track must be at the top. It is probably best to align only two tracks in one step, depending on the length of the cd tracks. the durations should in any case not e...

Just to clarify: There are filter types that produce virtually no ringing, but create a tail nevertheless. In general, low corner frequencies produce long tails and so does a high Q value (the same as a narrow band width or a steep slope). The following snippet returns the length of the tails for th...

(psetq f-0 200.0 interval 50.0 f-n 600 tone-dur 10.0 pause-dur 5.0 amp-0 0.8 amp-n 0.2) (setf repetitions (truncate (/ (- f-n f-0) interval))) (setf amp-interval (/ (- amp-n amp-0) (float repetitions))) (abs-env (seqrep (n (1+ repetitions)) (set-logical-stop (scale (+ amp-0 (* n amp-interval)) (osc...

I asked me the same. According to sengpiel, both procedures are valuable. If the measurement is sound pressure, RMS will be taken. But sound intensity is also possible. I can't tell exactly, the page looks like scrambled eggs (for screen readers). http://www.sengpielaudio.com/calculator-RT60.htm Any...

Steve was a little bit faster. Anyway, here's another implementation with arbitrary amplitudes for start and end. (psetq f-0 200.0 interval 50.0 f-n 600 tone-dur 10.0 pause-dur 5.0 amp-0 0.8 amp-n 0.2) (setf repetitions (truncate (/ (- f-n f-0) interval))) (setf amp-interval (/ (- amp-n amp-0) (floa...

Congratualations A nice first Nyquist project. I think that the three plug-ins could be made into one, can't they? Eventually coming up with labels for all octaves. You've taken an really interesting approach with the LPM. There's a lot of space for improvement though. There is no need to do the ana...

I have the same opinion as Steve. There are quite a few plug-ins that translate transfer functions into first or second order Biquads for example. Although it is theoretically imaginable that such a function could be directly entered into a textbox (H=a*z(n)...) it appears to me rather unintuitive. ...

It's easy to reproduce on Windows 7. New 32-bit project. Generate an "Audacity" DTMF tone, amplitude 0.8, 6 seconds, duty cycle 55%. After the "walkie-talkie" EQ, every absolute silence between the tone shows as non-zero samples, averaging about -80 dB, but the "tail" of modified samples closest to...