icShop Logo
Welcome, ( 登入 or 註冊 )
 
0

CATEGORIES

暢銷商品排行
Grove 聲音感應模組
$ 225.0 元

Electret 麥克風放大器- MAX9814(可調)
貨號:368031000962
售價 : NT$ 399.0 元
製造商 :Adafurit
產地:
適用運送方式 : 7-11取貨付款,7-11純取貨,郵寄(單一運費),貨運,宅配,貨到付款,7
出貨時程: 可於2~4個工作天內出貨。   


輸入數量 :
Add to wish list
產品上架時間 2015 六月 08 週一.


規格內容說明  

DESCRIPTION

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)

 

TECHNICAL DETAILS

 






聚合物鋰電池-150mAh 3.7V
Polymer Lithium Ion Battery
$ 100.0 元
1 x '聚合物鋰電池-150mAh 3.7V'
麥克風轉接板- SPW2430
ilicon MEMS Microphone Breakout
$ 229.0 元
1 x '麥克風轉接板- SPW2430'
Arduino Pro Mini 328 - 5V/16MHz

$ 500.0 元
$ 450.0 元
1 x 'Arduino Pro Mini 328 - 5V/16MHz'
Teensy 3.2
32位ARM Cortex-M4 72 MHz CPU,開發板 Sparkfun原廠
$ 805.0 元
1 x 'Teensy 3.2'
U1V11F5升壓模組5V(Pololu)
MIN IN:0.5V, OUT5V /1.2A

$ 350.0 元
$ 229.0 元
1 x 'U1V11F5升壓模組5V(Pololu)'
LiPower -升壓轉換器
Boost Converter,TPS61200,0.3-5.5V
$ 590.0 元
1 x 'LiPower -升壓轉換器'
Arduino MEGA 2560 R3 開發板
送USB線 完全兼容 arduino ATMEGA16U2 2012新版本
$ 290.0 元
1 x 'Arduino MEGA 2560  R3 開發板'
震動馬達(直徑10mm)
Vibration Motor,振動,震動電機
$ 185.0 元
1 x '震動馬達(直徑10mm)'