{"product_id":"omnidirectional-microphone-module-i2s-interface-inmp441-mems-for-esp32-micro-controller","title":"Unsoldered INMP441 Omnidirectional Microphone Module","description":"\u003cdiv\u003e\n\u003cp\u003eProduct Description:\u003cbr\u003e\n\u003cbr\u003e\nThe INMP441 is a high-performance, low-power, digital output, omnidirectional MEMS microphone with a bottom port. The\u003cbr\u003e\nThe complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog to digital converter, anti-aliasing filter, power management, and an industry-standard 24-bit I2S interface. The I2S interface allows the INMP441 to be directly connected to digital processors such as DSPs and microcontrollers without the need for an audio codec for use in the system. The INMP441 has a high signal-to-noise ratio and is an excellent choice for near-field applications. The INMP441 has a flat wideband frequency response that results in a high definition of natural sound.\u003cbr\u003e\n\u003cbr\u003e\nProduct Features:\u003cbr\u003e\n1. Digital I2S interface with high-precision 24-bit data\u003cbr\u003e\n2. High signal to noise ratio is 61 dBA\u003cbr\u003e\n3. High sensitivity - 26 dBFS\u003cbr\u003e\n4. Stable frequency response from 60 Hz to 15 kHz\u003cbr\u003e\n5. Low power consumption: low current consumption 1.4 mA\u003cbr\u003e\n6. High PSR: -75 dBFS\u003cbr\u003e\nInterface definition:\u003cbr\u003e\nSCK: Serial data clock for I2S interface\u003cbr\u003e\nWS: Serial data word selection for I2S interface\u003cbr\u003e\nL\/R: Left\/Right channel selection.\u003cbr\u003e\nWhen set to low, the microphone outputs a signal on the left channel of the I2S frame.\u003cbr\u003e\nWhen set to a high level, the microphone outputs signals on the right channel\u003cbr\u003e\nSD: Serial data output of the I2S interface.\u003cbr\u003e\nVCC: Input power, 1.8V to 3.3V.\u003cbr\u003e\nGND: power ground\u003cbr\u003e\nThis product provides tutorials for using ESP32 modules with I2S functionality.\u003cbr\u003e\nConnect to ESP32:\u003cbr\u003e\nINMP441 ESP32\u003cbr\u003e\nSCK \u0026gt;\u0026gt; GPIO14\u003cbr\u003e\nSD \u0026gt;\u0026gt; GPIO32\u003cbr\u003e\nWS \u0026gt;\u0026gt; GPIO15\u003cbr\u003e\nL\/R \u0026gt;\u0026gt; GND\u003cbr\u003e\nGND \u0026gt;\u0026gt; GND\u003cbr\u003e\nVDD \u0026gt;\u0026gt; VDD3.3\u003cbr\u003e\n\u003cbr\u003e\nWhat is the difference between an omnidirectional microphone and a unidirectional microphone:\u003cbr\u003e\nFirst of all, I understand that the sound divergence is all-round. One person speaks and diverges in the air.\u003cbr\u003e\nAs for how far it can pass, it depends on many factors.\u003cbr\u003e\n1. Directional microphone, the general pickup radius is very small, 30 cm is a big one, single-use, put it on the mouth, the sound quality is very good because it is not picked up again.\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nThe shape is generally goose neck wheat, a rod, a curved rod, to your mouth, directivity, just listen to your voice.\u003cbr\u003e\nWith a single-point microphone, the sensitivity is limited to a certain range. Sensitivity is too high, causing sharp whistling, etc., involving many other devices\u003cbr\u003e\nAs for why not make a big pickup radius, there is a reason. Later\u003cbr\u003e\n2. Omnidirectional microphone, the general pickup radius is very large, one meter two meters three meters five meters, compared with ten centimeters, this level is very different, it is not just picking a person's voice, but Multiple people, five six, seven eight or even ten.\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nOmnidirectional microphones are highly sensitive,\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Others","offers":[{"title":"Default Title","offer_id":43696842342591,"sku":"MLE04579","price":279.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0531\/3419\/6927\/files\/sg-11134201-7rdwo-lykavi3l47ru4b.jpg?v=1735811287","url":"https:\/\/makerlab.ph\/products\/omnidirectional-microphone-module-i2s-interface-inmp441-mems-for-esp32-micro-controller","provider":"Makerlab PH","version":"1.0","type":"link"}