What is the directivity factor?
The directivity factor is the ratio of the intensity [6] on a designated axis of a sound radiator at a stated distance r to the intensity that would be produced at the same position by a point source if it were radiating the same total acoustic power as the radiator.
What is the directivity of loudspeaker?
Loudspeaker directivity is the extent to which loudspeakers focus the sound in a particular direction (typically towards the listener) instead of broadcasting it in all directions around the room.
What is sound directivity?
Directivity is a measure of the directional characteristic of a sound source. Directivity is important because it helps indicate how much sound will be directed towards a specific area compared to all the sound energy being generated by a source. …
What is directivity index in Sonar?
The sonar equation includes the directivity index of the receiver (DI). Directivity is the ratio of the total noise power at the array to the noise received by the array along its main response axis. Directivity improves the signal-to-noise ratio by reducing the total noise.
What is Q in loudspeaker design?
The directivity factor Q provides a simple but effective way to describe the sound radiation from a source. Manipulation of Q is a major tool for system designers, who must select directivity characteristics that are appropriate for an application. Physically realizable loudspeakers fall short of this ideal characteristic.
What is the Directivity Factor of a loudspeaker?
A useful specication for describing the directivity of a loudspeaker is the directivity factor, or Q. The Q of a loudspeaker is the ratio of sound pressure- squared at one angle (a single point in space) from the loudspeaker to the average sound pressure-squared radiated from the loudspeaker.
What is the Directivity Factor Q?
The directivity factor Q provides a simple but effective way to describe the sound radiation from a source. Manipulation of Q is a major tool for system designers, who must select directivity characteristics that are appropriate for an application.
What is the Q factor of a spherical horn?
Thus, a spherical source has a Q factor of 1 and a directivity factor of 0 dB, and a hemispherical (half-sphere) source has a Q factor of 2 and a directivity factor of 3 dB. Typical directivity indexes for a horn would spread from 10 to 20 dB, corresponding to Q factors of 10 to 100.
