BSS Audio OPAL Series DPR-944 Owner's Manual - Manual (Page 34)

3 4
Fig 11.2 Difference
between Bell and shelf
de-essing
Application examples - Compressors
A related problem called ‘popping’, caused by wind from the ‘p’ sound
entering a microphone, is responsible for generating large amounts of
explosive bass signal. To treat this, configure the DPR 944 as for de-essing, but
set the frequency control to select low frequencies.
Fig 11.3 De-popping a
signal
Also concerning microphones and affecting the bass end of the band is the
‘proximity effect’, which causes the low frequency output of a microphone to
increase as the vocalist gets closer. This effect is more gentle than ‘popping’
and hence a threshold setting closer to the normal program level and lower
ratio will probably sound more natural. Operation with the fast release switch
out will probably be preferred.