Cardioid microphones as measurement microphones

bambi

New Member
Oct 1, 2018
1
0
0
#1
Hi,

What do you think about measuring reflecting sound energy from a surface using directional microphones (measurements in free-field)?
It would be interesting measuring reflecting sound energy arriving at the microphone from a limited angle range. This angle range would be defined by the directionality of the microphone (small diaphragm mics and shot guns with cardioid polar responses).

The only problem I see is that the directivity of microphone is not going to be equal at all frequencies, and therefore the reflected sound energy measured by the microphone will not depend only on the reflected sound field but on the directivity variation of the microphone.

Anyone has done acoustical measurements with non-omnidirectional mics?? does anyone know a directional microphone with a reasonable constant polar response from 500 Hz to 6k ?

Thanks for your comments!
 

Bruce B

WBF Founding Member, Pro Audio Production Member
Apr 26, 2010
6,751
142
63
Seattle, WA
www.pugetsoundstudios.com
#2
As you stated, the polar patterns of a cardioid mic have different freq. responses.

For a cheap mic to use for acoustical analysis, there is the Dayton Audio EMM-6

For a much better alternative, there is the Earthworks M30 or M50
 

About us

  • What’s Best Forum is THE forum for high end audio, product reviews, advice and sharing experiences on the best of everything else. A place where audiophiles and audio companies discuss existing and new audio products, music servers, music streamers and computer audio, digital to audio convertors (DACS), turntables, phono stages, cartridges, reel to reel, speakers, headphones, tube amplifiers and solid state amplification. Founded in 2010 What's Best Forum invites intelligent and courteous people of all interests and backgrounds to describe and discuss the best of everything. From beginners to life-long hobbyists to industry professionals we enjoy learning about new things and meeting new people and participating in spirited debates.

Quick Navigation

User Menu

Steve Williams
Site Founder | Site Owner | Administrator
Ron Resnick
Site Co-Owner | Administrator
Julian (The Fixer)
Website Build | Marketing Managersing