RNNoise Examples for Pico 2

Example project to demonstrate the RNNoise audio noise suppression algorithm running on a Raspberry Pi Pico 2 board, using the RP2350's Cortex-M33 processor.

Hardware

• RP2350 board
  • Raspberry Pi Pico 2
• Microphones
  • PDM
    • Adafruit PDM MEMS Microphone Breakout

Default Pinout

PDM Microphone

Raspberry Pi Pico 2 / RP2350	PDM Microphone
3.3V	VCC
GND	GND
GND	SEL
GPIO 21	DAT
GPIO 20	CLK

GPIO pins are configurable in example.

Examples

See examples folder.

Cloning

git clone https://github.com/ArmDeveloperEcosystem/rnnoise-examples-for-pico-2.git

Building

1. Set up the Pico C/C++ SDK
2. Set PICO_SDK_PATH

export PICO_SDK_PATH=/path/to/pico-sdk

3. Create build dir, run cmake and make:

mkdir build
cd build
cmake .. -DPICO_BOARD=pico2
make

4. Copy example .uf2 to Pico when in BOOT mode.

License

BSD-3-Clause license

---

Disclaimer: This is not an official Arm product.