This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LP-CC2652RB: Audio Plugin pdmstream example code ?

Part Number: LP-CC2652RB


Hi @TI, Good Day.

I need few information and clarification in pdmstream example from audio plugin.

For our implementation we are referring the pdmstream example for acoustic sensor data capturing.

1. How can I control the output PCM sampling frequency? Default in pdmstream example in the read me file it was mentioned as 16Khz sampling frequency rate.

That frequency can be changed as user need ? 

2. How can I conform & get the 16 KHz sampling rate data.

3. How to achieve the continuous data rate with 16Khz sampling frequency?

For Reference :

Audio Settings

By default, the example will sample the Adafruit micrphone at a bit clock frequency of 1.021MHz. This oversampled PDM bitstream is coverted to PCM. Finally, the PCM frame is (optionally compressed) sent out over UART to the PC.

The PCM settings are as below:

  • Bit depth: 16
  • Sampling frequency: 16kHz