PYNQ Version: Release 2019_10_03 3f63450
Image: ABR NengoBrainBoard
Using the built-in demo of recording sound from the built-in microphone, the recorded audio file is only static. All interaction was through the notebook interface. Does anyone have any suggestions to fix this?
Did you try run the notebook with the standard Pynq-Z1 image?
There are a few things to check if you are using a custom board.
There is a difference between the audio circuitry on the PYNQ-Z1 and PYNQ-Z2. This means there is a different PL design for both boards.
The audio setup is done here: (you can compare the differences between the two)
I’m not familiar with the NengoBrainBoard. It may be based on the image for the PYNQ-Z2 image. If you haven’t already, you should check if it uses the base design for the Z1, and if the audio circuitry is enabled. After that, I would suggest you ask your question on their forum about how they have set up their image/PL designs.