Audio_Sampling_frequency

[vinod Jaiswal]

Posted on March 17, 2017 at 10:30

Hi all,

I am working on memsmic1 application which is convert 1 bit pdm data into pcm. with sampling frequency 16 Khz

if

#define AUDIO_CHANNELS 2

#define AUDIO_SAMPLING_FREQUENCY 16000 

#if (AUDIO_SAMPLING_FREQUENCY == 16000)

when i dump pcm data it has sample rate 44100 .

my question is :- if 

AUDIO_SAMPLING_FREQUENCY 16000 why i got 44100 bytes data.? 

[Nesrine M_O]

Posted on March 17, 2017 at 11:41

Hi

Jaiswal.vinod

,

Please try to have a look to this document and example it may be helpful for you:

• STM32Cube_FW_F4_V1.0\Projects\STM32F4-Discovery\Applications\Audio\Audio_playback_and_record

• http://www.st.com/content/ccc/resource/technical/document/application_note/ca/18/be/bb/f8/53/47/a5/DM000408pdf/files/DM000408pdf/jcr:content/translations/en.DM000408pdf

-Nesrine-

[Tesla DeLorean]

Posted on March 17, 2017 at 16:00

>>

when i dump pcm data it has sample rate 44100

In the .WAV file headers or somewhere else?