MIcrophone Design II Reading

2.2. Proximity Effect

Proximity Effect

The proximity effect exaggerates the low-frequency content of an acoustic source when a microphone is placed near the source (within about two feet). The more directional the microphone, the greater the proximity effect will be. Also, the closer the mic, the greater the exaggeration will be. You have undoubtedly heard this effect with 'boomy' radio personality voices.