Howtosignalprocessing
- How do you determine the direction of sound?
- What is called the microphone type that detects the sound from any direction?
- What is used to determine a microphone directionality?
- What microphones pick up sound from only one direction?
How do you determine the direction of sound?
The brain works out sound direction by comparing the times of when sound reaches the left versus the right ear. This cue is known as interaural time difference, or ITD for short.
What is called the microphone type that detects the sound from any direction?
Similarly, a pressure microphone will detect sound pressure no matter from which direction the sound enters. A pressure microphone is omnidirectional.
What is used to determine a microphone directionality?
There are a number of different directional patterns available, and these are plotted in graphs known as polar patterns. A polar pattern graph shows the variation in sensitivity 360 degrees around the microphone - assuming that the microphone is in the centre and that 0 degrees represents the front.
What microphones pick up sound from only one direction?
Cardioid microphones pick up sound from only one direction; from in front of the microphone. This means that they are very effective for interviews or performances in loud places, where ambient sound needs to be cancelled out in favor of the interviewee or performer.
