Comments on: Guide for Microphone Sound Sensor with Arduino

By: Mr Squarepain

Mr Squarepain — Tue, 06 Aug 2024 07:19:57 +0000

Haloo, how can I find out the decibel (dB) value of a sound sensor reading?

By: jacques savard

jacques savard — Mon, 05 Jun 2023 00:28:05 +0000

SOMEBODY KNOW rge curve of frequebcy of these microphone
is it able to go from 50Hz to more then 2kHz

the curve llok like very bad
no qY TO AEE IT

By: Stephanie KALI

Stephanie KALI — Thu, 27 Apr 2023 08:17:23 +0000

Bonjour svp comment utiliser ce module pour détecter et écouter les battements de cœur d’un fœtus ?

By: Jørgen Olsen

Jørgen Olsen — Sun, 26 Mar 2023 13:25:17 +0000

Mit mål med lydmodul er at styre en servo motor 180g
Enten direkte eller via IC 555

By: mohsen

mohsen — Mon, 26 Dec 2022 15:23:13 +0000

In reply to Sara Santos. Hi Sara. what module can we use with a microcontroller in order to record audio? Thanks a world!

By: far

far — Fri, 14 Oct 2022 19:43:32 +0000

I have had a smimilar issue extracting the data to ardino module.
-with 5V power supply the counts were varying from 1009~1023.
-with 3.3V power supply the counts were in the range of 610~640

I connected an scope and found out the MIC module gives an AC outputput of 340mV max sitting over DC signal of 3.3(at 5V supply) and 1.7(at 3.3Vsupply).

On thing was very clear that However the MIC is giving and out put, we need to consider the analoag ref. voltage, for an ADC the input can never be higher than Vref. i.e. 2.56V.So 5V suppy is not going to work. Also if 1.1 Vref is selected the ADC will remain saturaed alaways at 1023 and won’t work.
Also consider a need to subtruct and offset of 1.7V while working with 3.3V supply.

As a summary,
1- Set Vref of Arduino ADC module to 2.56V
2- Use 3.3V supply for VMA309 sound sensor
3- Consider a DC offset of 640 counts approx and the actual voice signal will be sitting on this offset value. May need to decouple in a software code.
4- Set a VMA309 sound sensor module threshold at a reasonable point to capture the full spectrum of voice.
5- The delay(ms) in a code shall be removed to get max capture rate or Set an ADC in a free running mode to caputure at max sampling rate(15KSPS for ATmega2560).

By: Sara Santos

Sara Santos — Mon, 08 Aug 2022 09:14:29 +0000

In reply to Opilite.

Hi.
No. This module is not appropriate for voice recognition.
Regards,
Sara

By: Opilite

Opilite — Mon, 08 Aug 2022 08:17:06 +0000

Is it possible to use that long module for voice recognition?
I want to make voice control, and I already have this sensor

By: André

André — Sun, 23 Jan 2022 20:11:09 +0000

Hi,
If I want to turn on 2 different colored led according to different sound levels, would that be possible with these modules, by just changing the code?

By: Sara Santos

Sara Santos — Thu, 07 Oct 2021 09:48:52 +0000

In reply to Pranay.

Hi.
Is the Arduino connected to the digital or analog output pin of the sensor?
Regards,
Sara