I2c Coordinate Output Microphone Board

• Customization: Available
• Metal Coating: Copper
• Mode of Production: SMT
• Model NO.: HSTD-8
• Base Material: FR-4
• Certification: RoHS, CCC, ISO
• Customized: Customized
• Condition: New
• OEM: Yes
• Input Range: 16kHz/48kHz @16bit
• Signal to Noise Ratio: 64dB
• Input Impedance: 100
• Input Channel Function: 16kHz/48kHz @16bit
• Output Impedance: 110
• Output Channel Function: 16kHz/48kHz @16bit
• Dimensions: 80mm*80mm
• Article Number: Mic-PRO (Sound Source Localization)
• Transport Package: Cartoon Box
• Specification: 38*38mm
• Trademark: OEM
• Origin: China
• Package Size: 20.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 0.180kg
• Lead Time: 20 days (1 - 1000 Pieces) ; To be negotiated ( > 1000 Pieces)

Product Description

Microphone array positioning principle

The principle of microphone array positioning is based on multiple-input multiple-output (MIMO) technology, which processes the signals received by multiple microphones to determine the location of the sound source. Specifically, the principle of microphone array positioning can be divided into the following steps:

1. Microphone array receives sound signals: The microphone array consists of multiple microphones and can receive sound signals from multiple directions.

2. Signal processing: By performing time domain or frequency domain analysis on the signal received by each microphone, the phase and amplitude information of the sound signal received by the microphone can be obtained.

3. Calculate the arrival time difference: For the positioning algorithm based on time difference, the distance and direction information from the sound source to each microphone can be obtained by calculating the arrival time difference of the sound signals received by multiple microphones.

4. Calculate the sound source position: According to the arrival time difference and phase information of the signals received by multiple microphones, the position coordinates of the sound source in the array can be calculated.


Microphone array positioning technology has the advantages of high positioning accuracy and strong anti-interference ability, and is widely used in speech recognition, sound source positioning, environmental monitoring and other fields. Different types of microphone arrays, such as linear microphone arrays, circular microphone arrays, three-dimensional matrix microphone arrays, etc., can adapt to different application scenarios and requirements.