Posted on June 09, 2015 at 18:22
Hallo,
I am working on extracting the data from the
MP45DT I used PDM filter function. I gave a beep sound to the microphone in the certain frequency, but I noticed that the captured raw data is not g...
Posted on June 10, 2015 at 02:06
Thanks Clive1
I do the casting for converting the unsigned 16-Bit to signed 16-Bit. Is it correct?
void DMA1_Stream3_IRQHandler(void)
{
uint16_t volume;
int16_t PCM_out[PCM_LENGTH];
volume = 50;
//****...
Posted on June 09, 2015 at 20:49Thanks for the reply clive1, Yes the output data after go through the filter is Unsigned 16. I collected each 32 samples after interrupt of the DMA double buffer and put it in one array and plotted it. But as you se...
