Knowles introduces MEMS microphone that can support ultrasonic bandwidth
Knowles Acousticscontact supplier
Knowles Acoustic has developed a digital microphone that supports ultrasonic bandwidth. It allows microphones to assist smartphones and consumer electronics with touch-less gesture recognition, phone-to-phone data transmission, pen input compatibility for handsets and tablets and 3D positioning input.
To facilitate these capabilities, the MEMS (micro-electromechanical systems) microphone can receive ultrasonic sound waves above the audible range of humans, up to 80kHz, and use those waves to triangulate an object’s location and movement. The technology principles are similar to radar or an ultrasound administered by a doctor during pregnancy.
Beyond the ultrasonic mode, the microphone offers four performance modes, including a low-power voice activation mode, which is ideal for mobile consumer electronics.
According to the company, the advancement offers a potential manufacturing cost saving by integrating more capabilities into an existing component with a smaller footprint.
Knowles expects to begin manufacturing this product in the third quarter of 2014.
The SPH0641LM4H-1 from Knowles Acoustic is a digital bottom port MEMS microphone with high signal-to-noise ratio, multiple modes and low-power consumption. It is said to be ideal for consumer electronics.
Knowles Acoustics has unveiled what it says is the world’s first digital microphone supporting ultrasonic bandwidth. This allows microphones to assist smartphones and consumer electronics with touchless gesture recognition, phone-to-phone data transmission, pen input compatibility for handsets and tablets, and 3D positioning input.
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