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Sensing the Environment as with Human Senses

sensor is also able to detect individual steps, body movements, or
gestures. The high measuring frequency (up to 200 Hz) and the fast
readout enable rapid feedback from the sensor.
HEARING AND UNDERSTANDING WITHOUT
BACKGROUND NOISE
Whether for telephone calls or web conferences, for active noise
cancellation (ANC) in headphones when traveling, or for operating a
device with your voice, the “artificial sense of hearing” with micro-
phones has become an integral part of everyday life.
First-class MEMS microphones and state-of-the-art audio process-
ing are key elements in meeting consumers’ growing demands on
these devices, for applications such as voice-recognition systems that
understand you from the next room or audio recordings that sound Figure 4: n neon’s ne generation o M M microphones ith
live. This is made possible by MEMS microphones with the lowest encapsulation o the condenser ena les virtually noise ree
possible signal-to-noise ratio (SNR) and a wide dynamic range. recording o audio signals.
Infineon has already set new standards for digital MEMS micro-
phones with its IM69D130 XENSIV MEMS microphone. Together with
its partners in audio signal processing and software, Infineon offers The “encapsulation” of the condenser enables virtually noise-free
high-end reference solutions that can be quickly deployed in a wide recording of audio signals. The microphone also offers low self-noise
variety of applications. (high SNR), wide dynamic range, low distortion, and a high acous-
The latest-generation MEMS microphones feature a specially tic-overload point (AOP). It is precisely these specifications that
encapsulated dual-backplate technology (Figure 4) and offer enable extremely precise voice recognition and an increase in SNR to
enhanced features with even greater performance and robustness. 75 dB for an AOP of up to 140 dB SPL . ■

Focused on

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