Sensitivity release high sensitivity, high letter to noise than MEMS microphone

Usually in the field of electronic communication, the microphone sensitivity for handheld or exempt mephonic call is around -42dB to -38DB. However, with the development of smart home and remote conferencing system, the universal existing application can not meet the requirements of voice collection, the new voice interaction needs need to achieve a further distance of voice collection, thus completely liberate both hands, better realization Interactive experience. For such demand, the sensitivity is high -32dB V / P at an analog output MEMS microphone: MSM321A3729H8P-C, which can pick up a farther distance acoustic signal to meet the demand for far field pickups. In addition to the need for sufficiently high sensitivity, far field pickup needs to overcome unfavorable factors such as environmental noise, and need to extract speech signals from the background environment, which requires the microphone to have very low negative noise, MSM321A3729H8P -C signal-to-noise ratio is up to 65dB, which is suitable for such high letter-to-noise ratio application scenarios. In far field pickup applications, multiple microphones are typically used to form microphone arrays, focusing on a specific far field sound source, excluding noise interference of the surrounding environment. In addition to the higher requirements of the microphone signaling ratio, this type array algorithm has a high requirements for the consistency of the microphone of the formation array to ensure the effectiveness of the algorithm. The MSM321A3729H8P-C can ensure that the sensitivity can be guaranteed within the extremely narrow tolerance range of +/- 1db, and meet the above application requirements within the extremely narrow tolerance range of +/- 1db. MSM321A3729H8P-C is provided in the form of sensitive uniform patented technology OCLGA packages, and the product is top-capable, providing convenient surface mounting. Product features: -32dB v / PA sensitivity 65DB signal to noise ratio +/- 1DB sensitivity tolerance control Excellent radio frequency interference suppression Application area: Webcam, security Conference system Intelligent wearable device Chatteal Camera Recording pen Smart home, intelligent robot Car speech system Intelligent wearable device Technical indicators: MSM321A3729H8P-C: Dimensions: 3.76x2.95x1.1 mm, top sound Sensitivity - -32 dB v / Pa Signal ratio - 65 dB Power consumption - 160 μA Related reading: Slimming for the wallet - Yingfine and Chongqing card brush all over the mountain city Lianfa Helio X30 exposure 10 core 16nm process Smart wear market rapid development: chip packages ushered in spring Test 3rd electricity 16nm process delay, Huawei Kirin 950 is very hurt

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