Nathan Raymond
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- Joined
- Feb 5, 2018
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So I was just thinking about how "Hi-Res" audio tracks (192 kHz, 96 kHz, etc.) might be creating noise pollution for pets in people's homes. For instance, cats can hear up to 64 kHz and dogs 45 kHz:
https://www.lsu.edu/deafness/HearingRange.html
It's my understanding that what audio has been captured in the ultrasonic frequencies of "Hi-Res" recordings is most likely just spurious noise, not really related to the music. Could that basically be creating noise pollution for our furry friends? Does it make sense to proactively re-process the lossless audio in our libraries from 192 kHz and 96 kHz down to 48 kHz with something like XLD (https://tmkk.undo.jp/xld/index_e.html) to eliminate that possible source of noise pollution?
Related to that, I've been wondering if there are any significant ultrasonic noises emitted by power supplies that haven't been suppressed because humans are the primary design target, and the focus is on what we can hear (not what our pets can hear). In other words, is there power supply noise caused by magnetostriction, the reverse piezo effect, or just switched-mode power supplies operating in ultrasonic frequencies that isn't suppressed but could annoy pets?
https://www.lsu.edu/deafness/HearingRange.html
It's my understanding that what audio has been captured in the ultrasonic frequencies of "Hi-Res" recordings is most likely just spurious noise, not really related to the music. Could that basically be creating noise pollution for our furry friends? Does it make sense to proactively re-process the lossless audio in our libraries from 192 kHz and 96 kHz down to 48 kHz with something like XLD (https://tmkk.undo.jp/xld/index_e.html) to eliminate that possible source of noise pollution?
Related to that, I've been wondering if there are any significant ultrasonic noises emitted by power supplies that haven't been suppressed because humans are the primary design target, and the focus is on what we can hear (not what our pets can hear). In other words, is there power supply noise caused by magnetostriction, the reverse piezo effect, or just switched-mode power supplies operating in ultrasonic frequencies that isn't suppressed but could annoy pets?