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Why do some microphones sound harsh and stony on headphones when the NoiseAssist plugin is switched in, even before any noise reduction is applied (ie when set to 0db reduction)? Why do some lapel mics sound better when the NoiseAssist Plugin is switched on ? What is the difference between negative and positive phase and does this affect the sound when listening to a recording on headphones. How can we check the output phase of a mic using a mixer such as the MixPre series ? Phase reversal changes the sound / tone of A-symmetrical waveforms.
NOTE : SoundDevices have now confirmed that NoiseAssist does in fact flip the phase of the output signal of the channel it is applied to (July 2022).
LISTEN ON CLOSED BACK HEADPHONES
(My open back headphones do not produce the fuller rounded sound I describe here when inverting phase with the Noise Assist Plugin switched in).
INDEX
00:00. Start
00:10. Introduction - wear headphones to listen
01.11. Studio Mic with NoiseAssist comparison at 0db (no reduction)
02:22. Inverting the Phase for NoiseAssist - improving the sound
03:02. Many Lapel Mics output -ve Phase
03:34. -ve Phase Lapel Mic with NoiseAssist
04:20. How to identify a negative phase microphone - monitoring yourself live
06:12. What have I learned ? Flipping the phase
07:25. Checking the phase offset with software (eg.iZotope RX)
09:17. Wind up
09:53. Sound Samples recorded on MixPre 6 - with and without NoiseAssist and inverting Phase
10:53. Summary (Text screen) - PAUSE the video to read
11:00. Background (TEXT screen) - PAUSE the video to read
11:05. Kit used in this video
