Microphone Performance Characteristics (1)

The Music Telegraph | Text 2019/02/13 [15:22]

Microphone Performance Characteristics (1)

The Music Telegraph| 입력 : 2019/02/13 [15:22]

▲ Microphone proximity effect (courtesy of Shure Inc.)

*Low frequencies rise as the sound source gets closer to a cardioid microphone   

© Research Gate

 

 

 

Microphone Performance characteristics (1)

 

 

1. Cardioid/Bi-directional microphone

 

a) Proximity effect

At close distance, 8” (inch) or less, the Mic will exhibit extra sensitivity to low frequency (see Top picture)

 

b) Pattern breakdown

All patterns are frequency dependent

i) At low frequency, the pattern becomes omni

ii) At high frequency, the pattern tightens

 

 

 

[side trip]

 

*Every 3dB increase ==> Human feel ‘twice’ loud

Once loud to me, there won’t be louder any more

 

*As you older, you lose high frequency hearing capability

 

*SPL meter (analog is much better than digital) ==> market price circa $35.00

 

 

 

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