Where did you get it ? Youtube rip ? What format did you rip it ? What website did you use ?
All these questions will affect sound quality. 😉
The highest quality audio stream youtube offers is 160kbps ".webm" / ".weba"
wich looks like this:
So by using that 160kbps webm/weba stream you go up from 16khz to at least 20khz in terms of peak frequency. 😉
I'd say it's about the same as a 320kbps mp3 file, but I could be wrong, since mp3 may use other methods to compress filesize. Not sure.
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