That's why you don't see the "max SPL" rating of 144 dB of the analog AT2020 listed on the AT2020USB spec sheet. The AT2020USB uses fixed gain before the converter. WIth low SPL's, you lose (digital) resolution, because your signal will only be 10 or 12 bits, not 16 bits.Īnd that could be why, when he stands back a foot from the mic, it sounds worse than his Shure SM58. If (1), it's really important to keep the SPL at the mic quite high. that it has higher gain when the user raised the "Volume" slider Is the amp gain controlled by the USB driver _inside the computer_, so Is it "constant-gain" - the "all bits on" signal level is at the mic's And there's probably an amplifier/buffer stage, between the ADC and the mic element. There's an ADC inside that mic - 16 bits, 44.1k samples per second. ![]() I suggested getting a pop filter, and working closer to the mic than he's used to. This question is partly about the AT2020 USB, but it's relevant to most "podcasting mics" with USB outputs.Ī friend of mine is having trouble getting good vocal sound from an AT2020 USB.
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