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Wel, here I added an Audio project for attaching Echo with microphone. If you can modify a mic mixer, you can easyly use this circuit with your microphone.This is a single Chip circuit and very easy. Here I used PT2399 IC.PT2399 is an echo audio processor IC utilizing CMOS Technology which is equipped with ADC and DAC, high sampling frequency and an internal memory of 44K Digital processing is used to generate the delay time, it also features an internal VCO circuit in the system clock, thereby, making the frequency easily adjustable. Very low distortion (THD<0.5%) and very low noise (No<-90dBV).In this circuit you have to use reguleted 5 volt. The analog ground and digital ground may be common. So you can short pin 3 and 4.

From the year 2000 I started to work with various electronics projects like radio transmitters, audio amplifiers, sound processing kits, digital logic circuits, microprocessor based device, etc. But that time I had very poor knowledge about it. After I increased my knowledge it became a serious hobby to me. I like songs very much and like to sing. When I entered to voice conference at any chat, I tried to use a voice effect with my microphone to surprise my friends. I simply use an ECHO and Delay attaching device. Recently I build a single chip circuit for Echo & Delay. At the same times I am working with High watt long range FM transmitters and trying to get permission from our ?Tele Regularity Commission?. If people here are interested about this hobby or any other electronics project, I will add my projects here.

Hello friends, I just joined here to release from complex conditions of free hosting. I think I will achieve the great free hosting soon. I have some domain to be hosted. I think I could host them here. Waiting for the help of all Xisto friends.Few about me:Sakhawat Elahi Shiblee.City: ChittagongCountry: Bangladeshweb: http://forums.xisto.com/no_longer_exists/
Date of birth: 13 January 1983