Mic -> microcontroller -> speaker

[adiaa84]

microcontroller speaker

I am a newbie in microcontrollers.
I want to know how to interface a MIC and a speaker to a dspic microcontroller

 

[vandelay]

mic microcontroller

MIC->opamps->16-bit ADC->dsPIC->16-bit DAC->opamps->speaker amp->speaker

You should probably use a dsPIC33 with DMA, as it will save alot of resources in such an application.

 

[adiaa84]

microcontroller+speaker

for the ADC and the DAC, can i use 12-bit instead of 16-bit

 

[vandelay]

speaker interface microcontroller

I don't know your sound quality requirements but 12 bits sounds like an awfully low resolution for audio.. Just remember to use a chip with DMA (not all dsPIC33 has it), or else your chip will be busy just moving the digital data, and you will have no free resources for signal processing.