node-red-contrib-acoustics

This module provides two nodes in NODE-RED to generate noise following Gaussian and Extreme Value Distributions respectively depending on the periods of day, evening and night.

From version 1.0.0 you can add acoustic nodes like other Node-RED nodes.

Pre-requisites

The node-red-contrib-acoustics module requires Node-RED to be installed.

Install

To install the stable version use the Menu - Manage palette option and search for node-red-contrib-acoustics, or run the following command in your Node-RED user directory (typically ~/.node-red):

npm i node-red-contrib-acoustics

Restart your NODE-RED instance and you should have two extra nodes available in the palette. These nodes called gaussian and extreme_value are added to the function tab.

Features

Gaussian node

Generates noise following a Gaussian Distribution depending on the periods of day, evening and night.

1. Inputs

   • payload: the message payload is the timestamp (current time) used to discriminate between day, evening and night periods.

2. Outputs

   • payload: the message payload is a json frame ready to send via RESTful protocol (POST operation).

3. Operation

   • Name: used to rename the node.
   • msg.payload: node input used to select a time period: day, evening or night.
   • For each time period, it is possible to set the start time t_start and the end time t_end as well as the mean mu and the standard deviation sigma of the gaussian.

Extreme_value node

Generates noise following a Extreme Value Distribution depending on the periods of day, evening and night.

1. Inputs

   • payload: the message payload is the timestamp (current time) used to discriminate between day, evening and night periods.

2. Outputs

   • payload: the message payload is a json frame ready to send via RESTful protocol (POST operation).

3. Operation

   • Name: used to rename the node.
   • msg.payload: node input used to select a time period: day, evening or night.
   • For each time period, it is possible to set the start time t_start and the end time t_end as well as the location mu, the scale sigma and the shape k parameters of the Extreme Value Distribution.

License

The 2.0 version of the Apache License.

See the LICENSE file in this project for more details.