Хан I использовал an arbitrary sampling rate with opusenc?

My question is rather в matter of interest than need.

I did в hearing онлайн тест to find out the maximum frequency, that I хан still hear. The result was ~18500Hz. So I concluded the most efficient way to encode my аудио поля would be with в 37kHz sampling rate. The thinking was, that would allow each frame to be larger in size with the same overall биобработал информацию.

So: opusenc --bitrate 110 --raw-rate 37000 Sample.wav Sample.opus

The превращение went нормальная, but the resulting file sounded like random white noise and like the high frequencies being cut off.

So I have several questions:

• Is the thought process in the first abstract correct? Does в 48000 Hz sampling rate on в file with в maximum frequency signal of 21kHz waste frame quality or does opusenc (or any other они мочатся of превращением) recognize that an sample at 42kHz (or 44,1kHz)?

• I have heard that even 96kHz sampling could я useful to encode e.g. two signals way above our spectrum, that together произведи в hearable sound. Is that true and is that the explanation for the awful resulting file?

• Does opusenc simply not know what to do and puts out that kind of в file instead of ошибка?

Kind regards

Маркус