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Re:A top audio engineer explains NPR’s signature sound (2015) by iamsomewalrus on Friday April 16, 2021 @12:19PM (#26835822)
Flippantly, because hardware is cool!

Plugins - software for audio programs - are available but audio engineers are famously persnickety.

Re:A top audio engineer explains NPR’s signature sound (2015) by ycombobreaker on Friday April 16, 2021 @08:42PM (#26840624)
Disagree, because the issue here is where the filter is. As others have noted that a condenser mic has an internal preamp, it is most useful to filter inside the mic before amplification to preserve S/N ratio. I suppose you could do that with software in the mic, but that seems like a lot of effort for maybe a worse result.

Further down the audio path it eventually makes sense to digitize, but if you didn't have the HPF in the mic your noise floor will be worse.