A terrible question when i use MP45DT02

[jianxiong_1009]

Posted on August 16, 2014 at 06:03

Hi,I am Jesse

now,i will use MP45DT02 in my projectbut i evaluated it in STM32F407-DISCOVERY,i found a kind of terrible noise , it sounds like ''dot……dot……dot……''，especially female voice.wish a solutionthank you very much

[jianxiong_1009]

Posted on August 22, 2014 at 11:45I solved it. I increased the RAM of the AUDIO-BUFFERexcellent 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 */ 

[f23]

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?