Audacity Forum

But I still don't understand steve's treatment ofa sigle click. A lowpass filter, with the frequency parameter itself varying sinusoidally from 2 kHz to Nyquist over the little interval of a few ms -- what??

As for my experiments with identifying phoneme boundaries... The various voodoo I tried sometimes gets fooled by a click into making a boundary. But perhaps that is a "feature." I have not yer done the work of a more complicated division of speech into overlapping regions, with transitions. Clicks m...

I have reread the manual for NR and the first thing it says is, Don't use this for click removal. I have read the wiki about the algorithm, and the explanation why tinkle bells are unavoidable whatever the variant of the algorithm. I wonder if the deessing problem can be treated as a sort of dual. A...

I still do not understand how lp does the work. Is frq-env varying the cutoff frequency during the short selection? Why is that useful?

I do not understand steve's code example. lp is iterated with a time varying cutoff frequency. How would that remove clicks anywhere in the selection? Are you supposing a very short selection in which a click is identified already? The room tone patch is very useful and can be used without precise s...

The typical click is 5 ms or less. They are often easily seen in spectrogram view as a bright and narrow vertical stripe. If I were to attempt the detection problem, it would go something like this: Convolve with a single cycle of a sine wave at a certain frequency. Apply snd-avg with OP-PEAK and a ...

It takes more than Find Zero crossings to cut out a cycle of a vowel. A vowel waveform makes many zero crossings. I tried noise reduction a few times a while ago and came to mistrust it. I don't really understand how it works. It changed the timbre of leftover sounds. Now perhaps there was too much ...

That does not sound very hopeful. I edit narration and synchronization with other tracks is not a concern, so I often just slice clicks out. I can get very clean results but it is tedious. If you slice a bit of a vowel out, you must zoom in and take out exactly one cycle of the vowel waveform or els...

Does anyone know of a plugin that does a good job of removing mouth smacks from recorded voice? If not I was wondering how I might write such a thing. Problems would be first identifying clicks, which are typically 5ms or less, and then repairing them. I have some untested ideas for both. Deletion o...

So, I gather that listening to the difference between the original and high or lowpass filtered signals will not give a clear idea of what frequency components are subtracted, because there is indeed phase shift in the passband that I can see with a zoomed in view of the waveform. And what about the...