판매가 | 16000 |
---|---|
할인판매가 | 16,000원 (16,000원 할인) |
할인금액 | 총 할인금액 원 (모바일할인금액 원) |
적립금 |
160원(1.00%) 원 % 원 % 원 % 원 % 원 % 원 % 원 % 원 % 원 % |
배송방법 | 택배 |
배송비 | 3,500원 (150,000원 이상 구매 시 무료) |
배송 | |
---|---|
수량 |
상품 정보 | 가격 | 삭제 |
---|---|---|
총상품금액(수량) 0 |
상품명 | [A1713] Electret Microphone Amplifier-MAX9814 with Auto Gain Control (전자 마이크로폰 앰프 MAX9814 자동 게인 제어) |
---|---|
상품요약정보 | Maxim MAX9814 / automatic gain control 내장 / default max gain : 60dB (설정 변경 가능) / up to 3.3V input / 26mm x 14mm |
판매가 | 16,000원 |
제조사 | Adafruit |
원산지 | 해외 |
적립금 | 160원 (1%) |
상품코드 | P000BMPU |
배송방법 | 택배 |
배송비 | 3,500원 (150,000원 이상 구매 시 무료) |
수량 |
*Adafruit 제품은 해외배송 입니다
배송기간 이 약 2주 소요 됩니다
해외배송 제품은 주문 후 취소가 불가능 합니다
교환,반품,기술지원 이 불가능 합니다
구매전 이점 꼭 확인해 주세요*
Add an ear to your project with this well-designed electret microphone amplifier with AGC. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX9814, a specialty chip that is designed for amplifying electret microphones in situations where the loudness of the audio isn't predictable.
This fancy microphone amplifier module is a step above the rest, with built in automatic gain control. The AGC in the amplifier means that nearby 'loud' sounds will be quieted so they don't overwhelm & 'clip' the amplifier, and even quiet, far-away sounds will be amplified. This amplifier is great for when you want to record or detect audio in a setting where levels change and you don't want to have to tweak the amplifier gain all the time.
The chip at the heart of this amp is the MAX9814, and has a few options you can configure with the breakout. The default 'max gain' is 60dB, but can be set to 40dB or 50dB by jumpering the Gain pin to VCC or ground. You can also change the Attack/Release ratio, from the default 1:4000 to 1:2000 or 1:500. The ouput from the amp is about 2Vpp max on a 1.25V DC bias, so it can be easily used with any Analog/Digital converter that is up to 3.3V input. If you want to pipe it into a Line Input, just use a 1-100uF blocking capacitor in series (100uF sounds best).
For audio-reactive projects, we suggest using an FFT driver library (such as the one in this library) which can take the audio input and 'translate' it into frequencies. If you just need to keep track of audio levels, see our sound-level meter tutorial for Arduino
Each order comes with one assembled and tested board, with electret mic pre-soldered on, and a small piece of header. Our tutorial will get you started with using and testing the microphone amplifier and you can check out our general-purpose microphone amplifier tutorial for other project ideas and code.
Electret Microphone Amplifier - MAX9814 with Auto Gain Control (0:25)