Hello and good morning,
I am using Nano 33 BLE Sense for audio recognition project which the project are done in the closed area with the presence of echo in the room. I need to know whether the IC can capture my voice when i am standing as far as 5m from the IC.
I collect the audio samples for Training and Testing stage which shows good percentage result for both stages. But when the code generated and i upload the code into the processor of the Nano 33 BLE Sense and do the offline audio recognition testing, the accuracy results are bad.
I had try to change the PDM.setGain value from 127 to 255 in the code, but it doesnt work.
I am new in using the Arduino IC and also writing code. I need your advice regarding on the sensitivity of the mic on this IC.
- Does this IC suitable for capturing audio from long distant source, for example 5m?
- How can i increase the sensitivity of the mic?
- Which part of the code that i need to do modification in order to increase the sensitivity of the mic on the IC?
- Does the IC have noise and echo cancellation?
Your advice and opinion are highly appreciated. Thank you.