11 Facts About Boundary microphone

Boundary microphone is one or more small omnidirectional or cardioid condenser mic capsule positioned near or flush with a boundary such as a floor, table, or wall.

Boundary microphone can be used as a piano mic by placing it inside the piano lid, an approach which can obtain better pickup of the piano's mix of sharp percussive transients and gentle undertones than other microphone options.

Boundary microphone mics are used on hockey boards for body check sound effects.

Boundary microphone mics are usually less expensive than other mics, although there is nonetheless a range of price points that varies, depending on the number of capsules and the absence or presence of additional features, such as on-off switches, wireless capabilities, and levers to reposition the capsule.

Boundary microphone mics have a relatively flat profile, they have the advantage of being less visually obtrusive, such as when they are placed in a conference table or the floor or a musical theater stage.

Boundary microphone discovered that some molecules of air "stick" to the object.

Conventional microphone placed on, or a few inches above, a hard boundary surface will pick up the desired direct sound as well as delayed sound reflecting off the boundary surface.

The direct and delayed reflected sounds will combine at the Boundary microphone to create comb filtering, with constructive and destructive interference causing peaks and valleys in the frequency response.

Schoeps' BLM 3 boundary microphone is unusual in that it has a "pressure transducer" capsule that provides a hemispherical pickup pattern.

Directional boundary microphone is a boundary microphone with a directional polar pattern such as cardioid or supercardioid.

Predecessor of the directional boundary microphone was a directional microphone placed in an Electrovoice Mic Mouse, a foam block that suspended a conventional microphone horizontally just above a surface.