A program to listen to sound intensity using a microphone

This program requires a Python 3 interpreter with the following packages: pyaudio, numpy and matplotlib. Assuming you have pip just run:

pip install pyaudio numpy matplotlib

Perhaps using pip3 instead. Also make sure you have tk support.

Unexperienced users and Windows users are advised to download Anaconda (choosing python 3.X) and run from the command line

pip install pyaudio

to add the only package its installations lacks of.

Download and call the scripts with your Python interpreter, e.g.,python3 sonometer.py.

When the application is started, sound will be sampled every 0.3 s and the measured intensity will be shown in the plot as a point. When the plot is filled, the points on the left will be replaced.

To record and save a certain amount of data, set the number of points you want to sample in the "streak points" field and keep the "save streak" option checked. Press "start streak" and wait for the streak to finish. The data will be saved as "dataXXX.csv", the number being of the form sec&min&hour&day&month&year. The position of the points in the plot is irrelevant to this.

To change the time per sample, use the text box in the application and press the update button. Values smaller than 0.1s might make the UI unresponsive and are not allowed. However, the file can be edited to force it. If needed, check the parameters in the last lines of the code.

• Make sure the appropriate interpreter is being used. Python --version might help.
• If you had a previously installed python version you might need to clear the PYTHONPATH variable.