NoiseMeter: Difference between revisions

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* industrial noise, like building activities
* industrial noise, like building activities


Existing sound/noise meter projects:  
Existing sound/noise meter projects:
* [https://github.com/meekm/LoRaSoundkit LoRa sound kit] by Marcel Meek
* [https://github.com/hbitter/DNMS DNMS project] by Helmut Bitter
* [https://github.com/hbitter/DNMS DNMS project] by Helmut Bitter
* [https://github.com/meekm/LoRaSoundkit LoRa sound kit] by Marcel Meek, ESP32 with I2S microphone, shares many concepts with [EspAudioSensor]
* [https://github.com/bertrik/LoraWanPmSoundSensor LoRaWAN PM/Sound sensor] by Bas van Drunen, shares many concepts with [LoraWanDustSensor]
* [https://gitlab.waag.org/lodewijk/amsterdam-sounds-kit Amsterdam sounds kit] from Waag Society,  
* [https://gitlab.waag.org/lodewijk/amsterdam-sounds-kit Amsterdam sounds kit] from Waag Society,  
* Unknown sensor tested by RIVM in Schiedam (mentioned on https://www.samenmetenaanluchtkwaliteit.nl/nieuws/citizen-science-geluidmetertest-op-rivm-terrein )
* Unknown sensor tested by RIVM in Schiedam (mentioned on https://www.samenmetenaanluchtkwaliteit.nl/nieuws/citizen-science-geluidmetertest-op-rivm-terrein )

Revision as of 15:29, 2 November 2023

Project NoiseMeter
File:NoiseMeter.jpg
Measuring audio noise as citizen science
Status Initializing
Contact bertrik
Last Update 2023-11-02

Introduction

This project is about measuring environmental audio noise as citizen science.

For example, noise can be:

  • road traffic noise (cars, mopeds, etc)
  • air traffic noise,
  • industrial noise, like building activities

Existing sound/noise meter projects:

This project is about a kind of clone of the Amsterdam Sounds project.

hardware

Nano33 IOT

Nano33 IOT pinout

Hardware is a nano33 iot board.

Connections
SPH0645 nano33 iot Remark
SEL - leave unconnected
LRCK A2 (16) - I2S FS sample clock
DOUT D4 (4) - I2S SD data
BCLK A3 (17) - I2S SCK bit clock
GND GND
3V 3v3

Software

The software is based on arduino, built using platformio.

Casing

I'm looking into several options:

Junction box

Simple junction boxes sold by Gamma:

A downward pointing hole can be used for an 868 MHz LoRaWAN antenna.

Sensor.community casing

See https://sensor.community/docs/dnms/dnms-noise-measuring-dn40-result.jpg

Dimensions:

  • microphone is on a half inch (12.7 mm OD) white polystyrene pipe, 115 mm long
  • main piece is 25mm, length 160mm
  • some other connecting piecess

"RIVM" test casing

Exact dimensions unknown, see photo on this page: https://samenmeten.nl/nieuws/citizen-science-geluidmetertest-op-rivm-terrein

My guess:

  • microphone is on a 10mm diameter pipe, length 100mm
  • main case is a 40mm diameter pipe, length 200mm