A terrible question when i use MP45DT02

Posted on August 16, 2014 at 06:03

Hi,I am Jesse

now,i will use MP45DT02 in my project

but i evaluated it in STM32F407-DISCOVERY,

i found a kind of terrible noise , it sounds like ''dot……dot……dot……''，especially female voice.

wish a solution

thank you very much

This topic has been closed for replies.

Visitor II

Posted on August 22, 2014 at 11:45

I solved it.

I increased the RAM of the AUDIO-BUFFER

excellent mems-microphone!!

this is the point:

/* Defines for the Audio recording process */

#define RAM_BUFFER_SIZE 8000 /* 3Kbytes (1500 x 16 bit) as a RAM buffer size.

More the size is higher, the recorded quality is better */

Visitor II

Posted on June 09, 2015 at 19:20

Hi,

Can you show me your code if you dont mind. Do you used PDM filter for the signal processing?

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