From Hearing to Understanding: MEMS Microphones as a Foundation of Robotic Perception
https://www.electronics-lab.com/expert-insight/from-hearing-to-understanding-mems-microphones-as-a-foundation-of-robotic-perception/
Explore how high-SNR MEMS arrays and beamforming enable human-like spatial perception in complex acoustic environments.
Elevate your TinyML Projects with Arduino Nicla Voice Featuring Syntiant NDP120
https://www.electronics-lab.com/elevate-your-tinyml-projects-with-arduino-nicla-voice-featuring-syntiant-ndp120/
In a world where voice assistants can be activated by just a simple activation voice command line like “Ok Google” or “Alexa”, the importance of vocal input is crucial. Nicla Voice is a development board designed to help developers create and deploy machine learning models on edge devices, specifically for voice applications. Powered by the […]
Accurate Acoustic Sensor – Sound Frequency to Voltage Converter
https://www.electronics-lab.com/accurate-acoustic-sensor-sound-frequency-to-voltage-converter/
The project presented here is a sensitive sound sensor. The circuit converts sound frequency and outputs DC voltage. The board consists of LM358 OPAMP and LM2907 IC. LM358 is used as a dual-stage microphone preamplifier and LM2907 acts as a frequency to voltage converter. The circuit provides analog voltage output when it detects sound. The […]
Piezo Element Amplifier for Guitar and Violin
https://www.electronics-lab.com/piezo-element-amplifier-for-guitar-and-violin/
The board presented here is a preamplifier for contact microphones that are used for amplifying the sound of musical instruments which do not contain electrical pickups, such as guitar and violins. Most contact microphones use a piezo element to convert vibration in the body of the musical instrument to a voltage. The circuit is built […]
SparkFun Analog MEMS Microphone Breakout for remote IoT applications
https://www.electronics-lab.com/sparkfun-analog-mems-microphone-breakout-for-remote-iot-applications/
SparkFun has announced an Analog MEMS Microphone Breakout board built around the famous SPH8878LR5H-1 analog microphone. A MEMS microphone is an electro-acoustic transducer housing a sensor (MEMS) and an application-specific integrated circuit (ASIC) in a single package. The board features an OpAmp to boost the microphone’s output to a reasonable level, letting you connect it […]
Dev Board Micro – A microcontroller board with a camera, mic, and Coral Edge TPU
https://www.electronics-lab.com/dev-board-micro-a-microcontroller-board-with-a-camera-mic-and-coral-edge-tpu/
The Dev Board Micro board combines a camera, microphone and Coral Edge TPU with an NXP i.MX microcontroller Google is launching an edge AI board in the same form factor as a Raspberry Pi Nano for its Coral AI processor and NCP’s i.MX microcontroller for the first time. The Coral Dev Board Micro is a […]
Open Source PDM to USB microphone based on the Raspberry PI RP2040
https://www.electronics-lab.com/open-source-pdm-to-usb-microphone-based-on-the-raspberry-pi-rp2040/
Maker Mahesh Venkitachalam has designed a high-quality microphone he calls Mico using the main component of the Raspberry Pi Pico – the RP2040 controller chip. He writes: Recently, I’ve been working with the Raspberry Pi Pico. I’ve been dazzled with the RP2040 – especially with the PIO and the documentation and software support provided by […]
Pre-Amplifier for MEMS Microphone
https://www.electronics-lab.com/pre-amplifier-for-mems-microphone/
This is a low-cost, small-size audio pre-amplifier for MEMS microphone, OPAMP-based circuit amplifies the low-level analog signal coming from MEMS microphone to the desired level required for the next stage which is an audio amplifier, basically microphone level to line level. Resistor R4 and R7 are used to generate a voltage reference to bias the […]
MEMS Microphone Pre-Amplifier with Compression and Noise Gating – Studio Quality Microphone Pre-Amplifier
https://www.electronics-lab.com/mems-microphone-pre-amplifier-with-compression-and-noise-gating-studio-quality-microphone-pre-amplifier/
MEMS Microphones is setting a new performance benchmark across a growing number of industries. These innovative silicon microphones were designed to extend the benefits of the lowest possible self-noise (high SNR) and lowest distortion to an ever-expanding number of applications. The project presented here is a low noise analog MEMS microphone Preamplifier with compression and […]
MEET WAVE III – A PORTABLE 2-CHANNEL STEREO AUDIO PLAYER MODULE
https://www.electronics-lab.com/meet-wave-iii-a-portable-2-channel-stereo-audio-player-module/
Stereo finds widespread applications in audio media production owing to the growing demand for portable consumer electronics and listening systems like PA systems and sound boxes supporting impression and sonics of natural hearing. Form factor requirement of the new maker and DIY boards and means reduced hardwiring and system components. The Wave III – 2 […]