This command line tool will iterate through all connected Philips devices and try to switch the sampling rate to 44kHz.
After switching, the device will re-connect itself.
Be aware that switching can only be successful if the device is not currently recording or playing back audio.

1- Download the tool from this link 

2-Unzip the folder. 

3- Run the application "SamplingRateToolConsole.exe" 

4- Wait for SpeechMike(s) to reconnect ( it takes around 15 seconds). 

5- the sampling rate is now set to 44100 

6- For verifying whether switching was successful, right click on the sound icon and check if the sampling rate is 44100