Hello,
writing this post I used a translator, so sorry for any mistakes.
I have Audacity 2.3.3. I use it to record conversations from a listening scanner connected with a mini jack cable to the microphone input on a computer.
I have two such questions in total.
- In the settings (Ctrl + P) in the “Quality” section - Real-time transformation - Sampling frequency transformation - “Medium quality” is set by default. Does setting this to “Best quality (Slowest)” affect the quality of the recording? How is this with it? Which option is the best?
- When recording, I set the scanner to a low squelch level so that there is active noise, because when I have silence, there are knocks from the squelch lock at the beginning and end, and this interferes with editing, because sometimes these knocks overlap the proper part of the recording. That’s why I set the squelch level low during recording.
Then you know all the time there is buzz when there are no calls. Is there such an option in the program that something like the noise reduction pattern, after selecting a part of this noise, the program would record it quieter, for example? This would make it easier to extract the right conversations. Although I doubt this function 
- In the settings (Ctrl + P) in the “Quality” section - Real-time transformation - Sampling frequency transformation - “Medium quality” is set by default. Does setting this to “Best quality (Slowest)” affect the quality of the recording? How is this with it? Which option is the best?
No. Those settings don’t affect recording quality. They only affect re-sampling quality if you record at one sample rate and then convert/export to a different sample rate. You may not notice any conversion-speed difference. And with your “radio quality” recordings you probably won’t notice any quality difference either.
- When recording, I set the scanner to a low squelch level so that there is active noise, because when I have silence, there are knocks from the squelch lock at the beginning and end, and this interferes with editing, because sometimes these knocks overlap the proper part of the recording. That’s why I set the squelch level low during recording.
Then you know all the time there is buzz when there are no calls. Is there such an option in the program that something like the noise reduction pattern, after selecting a part of this noise, the program would record it quieter, for example? This would make it easier to extract the right conversations. Although I doubt this function > 
I’m not sure if there’s anything you can do about that. You can silence the “knocks” manually if there’s nothing important audio at the same time. You can try a [u]Noise Gate[/u] which is something like squelch - It kills (or reduces) the sound whenever the sound level is below a preset threshold. The regular Noise Reduction effect is unlikely to help. It works best when you have a constant low-level background noise (like a low-level hum or hiss).
412/5000
I still mute part of the recording between conversations (in this case squelch noise). After editing, I only have the conversation and there is silence in between, as it should be. It’s just that these taps sometimes overlap the beginning of the recording and I need to mute more than I would like, that’s why I use it without squelch, then there are no knocks.
But I will try this “Noise Gate” - I did not know this function. Thanks.
I still have a question. Is it possible that during playback of the track after recording (having quite a large zoom) the track does not scroll with the slider when it comes out of the area, but stays in place?