https://github.com/rubyonworld/noise-detection
The noise dector ruby script uses two linux tool to record and analyse de output: sox and arecord. So you need to install these packages on your raspberrypi (or other linux system):
https://github.com/rubyonworld/noise-detection
detect detection noise rails ruby
Last synced: 30 days ago
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The noise dector ruby script uses two linux tool to record and analyse de output: sox and arecord. So you need to install these packages on your raspberrypi (or other linux system):
- Host: GitHub
- URL: https://github.com/rubyonworld/noise-detection
- Owner: RubyOnWorld
- Created: 2022-09-27T15:41:13.000Z (over 3 years ago)
- Default Branch: master
- Last Pushed: 2022-09-28T00:29:54.000Z (over 3 years ago)
- Last Synced: 2025-05-19T20:32:38.518Z (about 1 year ago)
- Topics: detect, detection, noise, rails, ruby
- Language: Ruby
- Homepage:
- Size: 7.81 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
ruby-noise-detection
====================
Noise Detection Ruby Script
Installation
------------
The noise dector ruby script uses two linux tool to record and analyse de
output: **sox** and **arecord**.
So you need to install these packages on your raspberrypi (or other linux
system):
```bash
sudo apt-get install sox alsa-utils
```
Then, in the current version, the script does not accept parameters to change
file location (log, tmp recording and pid file), so you need to allow the script
execution user (**pi** for example) the write access to these files and folders:
```
RECORD_FILENAME='/tmp/noise.wav'
LOG_FILE='/var/log/noise_detector.log'
PID_FILE='/etc/noised/noised.pid'
```
or you can edit the script changin these variables values with what you prefer
for your system.
Detect Audio Card
-----------------
```bash
pi@raspberrypi ~ $ noise_detection.rb -d
Detecting your soundcard...
0 [ALSA ]: BRCM bcm2835 ALSbcm2835 ALSA - bcm2835 ALSA
bcm2835 ALSA
1 [U0x46d0x8d7 ]: USB-Audio - USB Device 0x46d:0x8d7
USB Device 0x46d:0x8d7 at usb-bcm2708_usb-1.2, full speed
```
Test Audio Card Record
----------------------
```bash
pi@raspberrypi ~ $ noise_detection.rb -t 1
Testing soundcard...
Samples read: 40000
Length (seconds): 5.000000
Scaled by: 2147483647.0
Maximum amplitude: 0.013245
Minimum amplitude: -0.041565
Midline amplitude: -0.014160
Mean norm: 0.013523
Mean amplitude: -0.013466
RMS amplitude: 0.014662
Maximum delta: 0.023560
Minimum delta: 0.000000
Mean delta: 0.003664
RMS delta: 0.004679
Rough frequency: 406
Volume adjustment: 24.059
```
Starting Noise Detection with Alert
-----------------------------------
```bash
noise_detection.rb -m 1 -n 0.30 -e me@server.com -v
```
The script will be started in background
Terminating Noise Detection
---------------------------
```bash
noise_detection.rb -k
```