How are endfire microphone arrays similar to broadside microphone arrays?

Endfire microphone arrays are similar to broadside microphone arrays in that the signals from the desired direction sum in a constructive manner, but signals from directions other than the desired direction sum to a lower value.
Subsequently, what are endendfire microphone arrays?
Endfire microphone arrays are similar to broadside microphone arrays in that the signals from the desired direction sum in a constructive manner, but signals from directions other than the desired direction sum to a lower value.
One may also ask, what is a broadside microphone array? A broadside microphone array is one in which a line of micro phones is arranged perpendicular to the preferred direction of sound waves (see Figure 3). In this figure, d is the spacing between the two elements of the array. The sound from the broadside of the array is what is usually desired to be picked up.
Indeed, how do I choose the best endfire microphone?
If the microphone needs to be less sensitive to sounds from behind or to the side, the endfire array may be more effective. An endfire microphone must be pointed directly towards the most-wanted sound source, such as in handheld microphones used for singing.
In respect to this, how do you implement an endfire array?
In addition, the array can be implemented within the physical depth of the existing display. An endfire microphone array is constructed by arranging a line of microphones in the direction of the desired sound source, where the desired sound arrives at each microphone with a different time delay.

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