{"product_id":"mh-et-live-omnidirectional-microphone-module-i2s-interface-inmp441-mems-high-precision-low-power-ultra-small-volume-for-esp32-2","title":"MH-ET LIVE Omnidirectional Microphone Module I2S Interface INMP441 MEMS High Precision Low Power Ultra small volume for ESP32","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ePENGHEKEJI\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003estandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eModule\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003ch1\u003eBBS:\u003ca target=\"_self\" class=\"\"\u003ehttp:\/\/mh.nodebb.com\u003c\/a\u003e\n\u003c\/h1\u003e\n\u003ch1\u003e\u003c\/h1\u003e\n\u003ch1\u003e\u003ca target=\"_self\" class=\"\"\u003eProduct introduction:\u003c\/a\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eThe INMP441 is a high performance, low power, digital output, omnidirectional MEMS microphone with bottom port. The\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eThe complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog to digital converter, anti-aliasing filter, power management and 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 high definition of natural sound.\u003c\/a\u003e\u003c\/div\u003e\n\u003ch1\u003e\u003c\/h1\u003e\n\u003ch1\u003e\u003ca target=\"_self\" class=\"\"\u003eProduct Features:\u003c\/a\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e1. Digital I2S interface with high precision 24-bit data\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e2. High signal to noise ratio is 61 dBA\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e3. High sensitivity - 26 dBFS\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e4. Stable frequency response from 60 Hz to 15 kHz\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e5. Low power consumption: low current consumption 1.4 mA\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e6. High PSR: -75 dBFS\u003c\/a\u003e\u003c\/div\u003e\n\u003ch1\u003e\u003ca target=\"_self\" class=\"\"\u003eInterface definition:\u003c\/a\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eSCK: Serial data clock for I2S interface\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eWS: Serial data word selection for I2S interface\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eL\/R: Left\/Right channel selection.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eWhen set to low, the microphone outputs a signal on the left channel of the I2S frame.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eWhen set to high level, the microphone outputs signals on the right channel\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eSD: Serial data output of the I2S interface.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eVCC: Input power, 1.8V to 3.3V.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eGND: power ground\u003c\/a\u003e\u003c\/div\u003e\n\u003ch1\u003e\u003ca target=\"_self\" class=\"\"\u003eThis product provides tutorials for using ESP32 modules with I2S functionality.\u003c\/a\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eConnect to ESP32:\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e INMP441 ESP32\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eSCK \u0026gt;\u0026gt; GPIO14\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eSD \u0026gt;\u0026gt; GPIO32\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eWS \u0026gt;\u0026gt; GPIO15\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eL\/R \u0026gt;\u0026gt; GND\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eGND \u0026gt;\u0026gt; GND\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eVDD \u0026gt;\u0026gt; VDD3.3\u003c\/a\u003e\u003c\/div\u003e\n\u003ch1\u003e\u003ca target=\"_self\" class=\"\"\u003eWhat is the difference between an omnidirectional microphone and a unidirectional microphone:\u003c\/a\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eFirst of all, I understand that the sound divergence is all-round. One person speaks and diverge in the air.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eAs for how far it can pass, it depends on many factors.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e1.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.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eThe shape is generally goose neck wheat, a rod, a curved rod, to your mouth, directivity, just listen to your voice.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eWith a single-point microphone, the sensitivity is limited to a certain range. Sensitivity is too high, causing sharp whistling, etc., involving many other devices\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eAs for why not make a big pickup radius, there is a reason. Later\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e2.omnidirectional microphone, the general pickup radius is very large, one meter two meters three meters five meters have, 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.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eOmnidirectional microphones are highly sensitive,\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eThe omnidirectional microphone pickup radius is too large, and it will also pick up more ambient noise, so the sound quality is not as good as the single-point microphone, unless you do a good noise reduction. There is definitely a difference between collective use and single-person service.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eBut omnidirectional wheat has a benefit, the wiring is simple, not one by one. Suitable for small meetings, ad hoc meetings, some remote discussions, remote operations.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003e3.single-point wheat generally supports local amplification,\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca target=\"_self\" class=\"\"\u003eOmnidirectional microphones generally do not support local amplification. It should be noted that because of such high sensitivity, the local amplification whistling is very scary, and the current technology is difficult to deal with.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S7b0761a0d4c644e88a80416f24b000edm.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S4e0cbb1a96394842bd61658c8bcdbb48f.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sb7863b1b1f17454f8550370eebb6e0d3A.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S316263acfad44b688ebb83ab966d53beP.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S0001f1d839de452589a3657f136c800ag.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sa3f7062e3c1f4ffca783d77962bae3ffY.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S8f77cefb9333473ea01e39c48fa20777Y.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"Default Title","offer_id":55467821531435,"sku":"\u003cnone\u003e","price":19.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S7b0761a0d4c644e88a80416f24b000edm_395cc2d5-9fe1-4b48-80d3-e3132a815a8d.webp?v=1788844373","url":"https:\/\/yoeruyo.com\/products\/mh-et-live-omnidirectional-microphone-module-i2s-interface-inmp441-mems-high-precision-low-power-ultra-small-volume-for-esp32-2","provider":"Yoeruyo","version":"1.0","type":"link"}