directional response pattern

directional response pattern

[də′rek·shən·əl ri′späns ‚pad·ərn]
(engineering acoustics)
References in periodicals archive ?
When the directional response pattern is highly symmetric about the reference axis, which is commonly the case for directional microphones isolated in a free field, Q can be determined from data obtained only in the horizontal plane at [alpha] = 0[degrees] between the azimuth angles of 0[degrees] and 180[degrees] (11), (12).
As is the case with an actual person, the head, torso and pinna of the manikin affect the directional response pattern and contribute to the asymmetry, as does the hearing aid style (in-the-ear, behind-the-ear, etc.
6] arise from imperfections in setting the elevation angle in combination with imprecise vertical aiming of the directional response pattern.
To show examples of the directional response patterns programmed in the aids used in the interlaboratory comparison and intrinsic to the unaided manikin, polar response patterns measured at NIST in the horizontal plane at [alpha] = 0[degrees] for three of the programmed memories and the unaided manikin are displayed in Fig.
N] measured (seven directional response patterns as a function of seventeen frequency bands).
All but one unit showed a directional response pattern with a consistent best axis of greatest phase-locked response, and an orthogonal "null" axis of minimal response in both the horizontal and midsagittal planes.
Primary-like DON cells have cosinusoidal directional response patterns similar to those seen in saccular afferents (1, 2).
Figure 1A illustrates directional response patterns of a representative sharpened DON cell in the horizontal plane.

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