An array microphone employs two or more microphones to capture audible sound waves in a unique manner. It utilizes multiple sensor elements positioned differently and relies on digital signal processing (DSP) to isolate audio sources. This microphone is capable of precisely identifying a speaker’s location while moving around a room and extracting that signal from background noise. Virtual polar patterns enable the microphone to process signals as though it were located at the speaker’s position. The housing of these devices can take the form of dual or circular arrays, or they may be integrated into telephones, webcams, and various other equipment.
The deployment of array microphones eliminates the need for complex multi-microphone setups in auditoriums or meeting rooms. They can produce output that provides a sense of space, as different sounds emanate from different directions in stereo playback. These microphones are commonly used in theaters, video and film productions, as well as household devices like video game consoles or car telephones.
While not a new technology, advances in digital signal processing have expanded their capabilities. In office settings, they may appear as table microphones, speech microphones, or goosenecks. When integrated with internet capabilities, they can be coupled with a webcam to facilitate more naturalistic video chats and online interactions.
Price of Array microphones
Array microphones come in various price ranges, with some designs offering high sensitivity and additional features. For instance, they may track speakers as they move, filter out other people talking, or reduce background noise. These devices can function without the need for heavy computing power or specialized software and may be mounted on a desktop or computer monitor, connecting with standard cables.
Different array microphone applications cater to specific purposes. Circular designs might be intended for capturing conference meetings, while others may focus on speech recognition or security monitoring. Microphones designed for voice control of software, computers, and home automation devices are also common.
Use of Array Microphone
Especially useful in noisy environments, array microphones excel at picking up dictations. Unlike conventional microphones that perceive sound as a single, mixed-signal, array microphones distinguish between different sources of incoming sound waves. This technology eliminates the need for limiting reception fields to specific patterns and intelligently positioning microphones. Array microphones address these issues, creating virtual microphones that offer freedom from orientation concerns.
The dynamic surround sound illusion provided by array microphones makes them a popular choice in professional audio environments. Some operate independently, while others are organized in groups to cover large spaces or individual rooms in a house. Enhanced digital processing of incoming sound signals enhances the precision of recording devices and allows audio equipment to mimic the natural capability and intelligence of the human ear.