{"product_id":"mh-et-live-inmp441-i2s-digital-microphone-module-omnidirectional-high-precision-low-power-ultra-small-size-for-esp32-arduino","title":"MH-ET LIVE INMP441 I2S Digital Microphone Module Omnidirectional High Precision Low Power, Ultra-Small Size for ESP32 \u0026 Arduino","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eComputer\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSZFYDOSH\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\"\u003eN\/A\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\"\u003eN\/A\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\"\u003eN\/A\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\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003e\u003cspan style='color:rgb(255, 0, 0);font-size:28px;font-family:\"Times New Roman\"'\u003eProduct introduction:\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eThe INMP441 is a high performance, low power, digital output, omnidirectional MEMS microphone with bottom port. The\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\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\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style='color:rgb(255, 0, 0);font-size:28px;font-family:\"Times New Roman\"'\u003eProduct Features:\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003e1. Digital I2S interface with high precision 24-bit data\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003e2. High signal to noise ratio is 61 dBA\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003e3. High sensitivity - 26 dBFS\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003e4. Stable frequency response from 60 Hz to 15 kHz\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003e5. Low power consumption: low current consumption 1.4 mA\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003e6. High PSR: -75 dBFS\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eInterface definition:\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eSCK: Serial data clock for I2S interface\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eWS: Serial data word selection for I2S interface\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eL\/R: Left\/Right channel selection.\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eWhen set to low, the microphone outputs a signal on the left channel of the I2S frame.\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eWhen set to high level, the microphone outputs signals on the right channel\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eSD: Serial data output of the I2S interface.\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eVCC: Input power, 1.8V to 3.3V.\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eGND: power ground\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eThis product provides tutorials for using ESP32 modules with I2S functionality.\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eConnect to ESP32:\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003e INMP441 ESP32\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eSCK \u0026gt;\u0026gt; GPIO14\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eSD \u0026gt;\u0026gt; GPIO32\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eWS \u0026gt;\u0026gt; GPIO15\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eL\/R \u0026gt;\u0026gt; GND\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eGND \u0026gt;\u0026gt; GND\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eVDD \u0026gt;\u0026gt; VDD3.3\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eWhat is the difference between an omnidirectional microphone and a unidirectional microphone:\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eFirst of all, I understand that the sound divergence is all-round. One person speaks and diverge in the air.\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eAs for how far it can pass, it depends on many factors.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\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\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eThe shape is generally goose neck wheat, a rod, a curved rod, to your mouth, directivity, just listen to your voice.\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eWith a single-point microphone, the sensitivity is limited to a certain range. Sensitivity is too high, causing whistling, etc., involving many other devices\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eAs for why not make a big pickup radius, there is a reason. Later\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\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\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003eOmnidirectional microphones are highly sensitive,\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\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\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\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\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\u003e3.single-point wheat generally supports local amplification,\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-size:20px;font-family:\"Times New Roman\"'\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\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin:0;display: block;width: 100%;\"\u003e\u003cimg referrerpolicy=\"no-referrer\" src=\"https:\/\/ae01.alicdn.com\/kf\/S278a1999875240c5b6c466416dee0919Y.jpg\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\n\u003cbr\u003e\n \u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\r\n","brand":"HHRummurz.com","offers":[{"title":"Default Title","offer_id":43535344926798,"sku":"\u003cnone\u003e","price":87.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/9066\/7598\/files\/S278a1999875240c5b6c466416dee0919Y.webp?v=1773944816","url":"https:\/\/www.hhrumurz.com\/products\/mh-et-live-inmp441-i2s-digital-microphone-module-omnidirectional-high-precision-low-power-ultra-small-size-for-esp32-arduino","provider":"HHrumurz.com","version":"1.0","type":"link"}