cardioid


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Related to cardioid: cardioid microphone

cardioid

[′kärd·ē‚ȯid]
(mathematics)
A heart-shaped curve generated by a point of a circle that rolls without slipping on a fixed circle of the same diameter.
References in periodicals archive ?
The most obvious and exciting behavior of the half-half sphere during water entry is not only the asymmetric air cavity and "cardioid" splash but also the curvature in trajectory.
The high-sensitivity, noise-cancelling cardioids microphone helps ensure effective team play.
As Vastech, the team developed and trademarked the CardioID and KnowYourCardioID brands, and attended the Florida Chiropractors Association convention last fall with the notion of selling chiropractors on the idea.
87 [pounds sterling]/100 grams This inconspicuous, excellent quality electret condenser cardioid microphone is supplied with a 1.5-metre cable, windshield, carrying case and stand.
3.3 for Xu-like points in starlike-polar c[infinity]rdinates, in the case of the cardioid r (0) = (1 - cos [theta])/2, and of the "four-leaf clover" r([theta]) = cos 2[theta].
The cross-sectional shape resembles a cardioid (rounded 'B' shape).
The sum and difference of the signals from the outer antennas (normalized by the sense antenna) create a cardioid (heart-shaped) pattern versus angle, as shown in Figure 4.
The recordings in both locations were conducted in a quiet environment using a Sony TCD D8 portable DAT recorder and a dynamic microphone with a cardioid response.
Answers: a) cardioid b) omnidirectional c) bidirectional
(The individual microphones are cardioid models that have progressively weaker sensitivity as the recording angle widens, until there is a near null directly behind the capsule.) The result is quasi-coincident behavior at lower frequencies, due to the long wavelengths involved, with shorter-wavelength frequencies from the midrange on up being given enough of an inter-channel time delay to impart a degree of spaced-array openness to the sound.
They were recorded in a soundproof booth using a stereo pair of Neumann cardioid microphones.
A 30-sec segment of the calling song of all male parents ([P.sub.1]) and four or five randomly chosen [F.sub.1] male offspring were recorded at between 25.5 [degrees] C and 27 [degrees] C on a Teac X-2000 open-reel tape recorder or a Marantz PMD 201 portable cassette recorder using a Realistic Super Cardioid Dynamic Microphone.