On Mon, 17 May 2021 20:38:33 +0200, Justin Kromlinger via aur-general wrote:
I've switched the PKGBUILD to a VCS source and removed any source code modifications [0]. It should now be compliant with the license and the wishes of the upstream maintainer.
I still wonder, if such an app gains something. For speech intelligibility (as well as for anything else) the position of the microphone, as well as the room reflections are important. However, formants, sibilants, etc. need to be considered. Assuming you want the best possible quality for a singer, the required frequency range is more or less from 80 Hz to 12 kHz (not that many aged people are able to hear up to 16 KHz). Rattle noise, flour noise is almost damped already below 80 Hz (around 75 HZ), but you even could cut at 90 or higher Hz, even for a male voice, let alone a female voice. Unwanted high noise is an issue, if you want the full spectrum. Actually you don't need something even near to 12 KHz for speech intelligibility. You can cut high frequencies way, way lower. _If_ there should be noise around the formants range from around 150 to 3000 Hz you can't do anything at all. Consonants might require up to 12 KHz, but actually 8 KHz or lower are likely ok. Analog telephones tended to provide 300 to less than 4000 Hz. I wonder what such an app could provide other, than irritation. My guess is, that getting used to unwanted noise is less irritating, than trying to cancel unwanted noise "smart" by what ever noise reduction, since sometimes the "smart" approach must allow unwanted noise, so the unwanted noise comes and goes. Instead, if there's no way to use a good room and good microphone position, let alone a good microphone and sound card, lowpass and highpass filters should be used as defaults. An audio engineer could tweak a little bit other frequencies, but most unlikely an automation or amateur is able to do it. Does this app really some a kind of magic?