Audacity Forum

This code allows you to generate short sections of a s sin curve within the selected region. The code lines that start with "(setq" set the parameters for generating the curve. If you want the curve to automatically fit to the start and end points, then you need to know how to calculate th...

Is it possible to expand your patch to have a curve instead of a straight line? That would be possible, but the hard part is that if you want a smooth transition between the original waveform and the new "line", you need to be able to calculate the curve. For example, if you were to use a...

The "sample duplication" part can be done quite easily with a Nyquist script. For example, to repeat each sample once: (setf sa (make-array (* 2 (truncate len)))) (setf ln (truncate len)) (setf samples (snd-fetch-array s ln ln)) (do ((i 0 (+ i 2)) (j 0 (1+ j))) ((>= i (* 2 ln))) (setf (are...

Assuming that you are talking about very short selections, joining with a straight line is not too difficult. Try running the following code in the "Nyquist Prompt" effect (Effect menu): (let* ((one (/ *sound-srate*)) ; duration of one sample in seconds. (end-time (- (/ len *sound-srate*) ...

I've attached a project with three audio clips. The first is the original rom. Imported as "Raw Data", signed 8bit, mono, 20kHz. The second is my cheated 40kHz version of the rom. Raw, signed 8bit, mono, 40kHz The last is a recording I found of the rom played by the SpecDrum/possibly an e...

It is composed of perfect duplicate samples @ 40kHz. What I uploaded is resampled to 44.1kHz. So you have the ROM samples, then duplicate each sample so that a,b,c,d... becomes a,a,a,a,b,b,b,b,b,c,c,c,c,d,d,d,d,d.... Then you "resample" it. How do you resample it? The reason that I'm aski...

The second is my cheated 40kHz version of the rom. Raw, signed 8bit, mono, 40kHz How exactly did you make that? I was expecting to see duplicated samples. I'd like to hear the content over 10kHz even if it is result of aliasing/noise. For a sample rate of 20 kHz, there isn't any frequency content o...

If there is technical reason to limit it to +/- 50db There needs to be some sot of limit for positive amplification. Even though Audacity processes in 32 bit float format, which has a huge dynamic range, there is still a limit to high high the amplitude can go (about +770 dB, or 3x10^38 linear). At...

Audacity does not currently support embedded album artwork. You will need to use a third party application to attach the artwork after exporting from Audacity.

Which version of Audacity are you using? (look in "Help > About Audacity".

In the current Audacity 2.0.5 there is (or at least "should be") a horizontal line at zero, as shown in this screenshot: