Far field and near field definition for microphone array

1. What is a far field microphone?
2. What is near field and far field in acoustics?
3. What is far field audio?
4. What is far field speech recognition?

What is a far field microphone?

Far-field ribbons are mics designed to have a balanced treble-to-bass ratio from at least 1 foot (0.35 m) from the source and retains bass up to at least 8 feet (2 m) away from the source.

What is near field and far field in acoustics?

As one may suspect, the acoustic terms “near field” and “far field” have to do with the physical distance from the sound source (Figure 1). Depending on how far away an observer is from a sound emitting object, the acoustic energy produced by the sound source will behave quite differently.

What is far field audio?

Far-field speech and voice recognition is used to recognize a user's voice in a noisy environment based on speaker localization using microphone arrays.

What is far field speech recognition?

Far-field, also called distant automatic speech recogni- tion (ASR), is concerned with the machine recognition of speech spoken at a distance from the microphone.