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Help needed in Portable audio player.....

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gauravsarode

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Hi,

I want to build Portable audio player which can play wave files from MMC (MultiMedia Card).The interfacing part of microcontroller and MMC is done. I am stuck with playing part.The application I made which reads from MMC and out it on microcontroller's PORT parallelly at 8khz since my wave file is sampled at 8khz.

Here is the problem part. I want to build DAC and audio filter.Can anyone suggest me any Ic which can be used as DAC and filter as well as amplifier or any two of these. Currently I am using simple R-2R ladder,RC filter and LM386 as amplifier.But in my case audio sound is very noisy.Can someone help me?

Thanks and regards,
Gaurav Sarode.
 

mgf

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