I have recorded a stack of LPs, and I’ve just started looking into click & pop removal. I spent an hour investigating spikes in between songs in a recording (using Audacity), and measured the pulse widths and amplitudes of a number of spikes associated with clicks/pops. How disappointed was I to discover that the sliders in Audacity’s Click Removal pop-up there are no units displayed for ‘threshold’ or ‘maximum spike width’ !
Does anybody know what the numbers on the sliders actually represent? I would like to see ‘ms’ for [pulse width] and ‘dB’ (relative to the RMS value of the sample) for [threshold], but the choice belongs to the designer.
Digital signal processing technology is arguably the most pervasive product of pure mathematical physics. It seems a shame that such an excellent product as Audacity should divorce its users from the most basic requirements of the scientific approach: units of measurement.
- Uncertain Al