PDM Ultrasonic Microphone Sensor Knowles SPH0655LM4H-1

Description

The RAK18032 is a mono PDM microphone module based on the Knowles SPH0655LM4H-1 which extends the WisBlock system with sound sensing capability.

The RAK18032 is a digital microphone module that converts analog audio to digital PDM signals. It supports left and right channels through a GPIO signal.

The RAK18032 can be used in applications such as audio sensing and audio recording.

Features

• PDM microphone
• Frequency Response 20 - 80kHz
• Low Distortion of 0.2% at 94dB SPL
• 64 dB(A) signal-to-noise ratio
• Omnidirectional sensitivity
• Size 15mmx 25mm

Package Inclusion

• 1 pc RAK18032
• 3 pc M1.2x4 Screw

Documentation

• RAK18032 Datasheet
• Build Your Own Voice Recognition Device Using Wisblock Audio
• RAK18032 3D model
• WisBlock Quick Start Guide
• WisBlock Source Code Repository
• 40-Pin Male Connector 3D File
• WisBlock IO Tutorial