Scimpy

Scimpy is an open-source, cross-platform loudspeaker design tool. Features include:

• Modeling speaker impedance, phase, SPL, and group delay from TS Parameters
• Measuring speaker impedance using your sound card as a signal generator and data acquisition system
• Extract TS parameters from measured results and downloaded ZMA files.
• Loudspeaker cabinet design: the tool will calculate speaker performance (SPL and group delay) for sealed and vented box designs. Will calculate "optimal" cabinet dimensions for traditional speaker alignments (B2 closed box, QB4-B4-C4)
• A complete book covering speaker design theory

Scimpy is short for "Sound Card Impedance Measurements in PYthon"

Easy Installation

Ubuntu

To install:

sudo add-apt-repository ppa:showard314/scimpy
sudo apt-get update
sudo apt-get install scimpy

To keep up to date:

sudo apt-get update
sudo apt-get upgrade

You will to reinstall after you upgrade between Ubuntu versions

Windows

Download from https://ci.appveyor.com/project/maqifrnswa/scimpy/build/artifacts

More advanced installation

PyPi Package:

PyPi package available (https://pypi.python.org/pypi/scimpy). To use the PyPi scimpy package, you need to install SciPy first. SciPy is not on PyPi, so you first must install via conda (Windows) or your package manager (Linux). Info below, however, this is still pre-release software, so the github version will have more features and possibly less bugs than the pypi version for now.

Debian/Ubuntu Development Environment & Execution:

sudo apt-get install python3-scipy python3-pyaudio python3-matplotlib python3-pyqt5 python3-pandas
python3 run.py

Minimal Windows Python Environment & Scimpy Installation:

Install miniconda (32bit, even if you have 64 bit - makes things easier) from: http://conda.pydata.org/miniconda.html

Open Windows PowerShell (Start Menu, search for "Windows PowerShell") and type the following commands:

conda update conda
conda install matplotlib scipy numpy pandas pyqt git
pip install pyaudio
git clone [email protected]:maqifrnswa/scimpy.git
cd scimpy
python run.py

To run, open PowerShell

cd scimpy
python run.py

To update to the newest version of scimpy

cd scimpy
git pull

Scimpy Usage and Speaker Design Theory Book

Is available here: https://maqifrnswa.github.io/scimpy/doc/html/scimpy.html

License

Code: GPL3

Book/Documentation: CC-BY-SA 4.0

Other Open Sourced Audio Analysis Projects

MATAA: A Free Computer-Based Audio Analysis System

"MATAA is an extremely flexible and versatile audio analysis system. Similarly to many other computer-based audio analysis systems, MATAA applies a test signal to the device under test and simultaneously records the response signal for subsequent analysis. MATAA uses the computers built-in soundcard (or an external audio module) to play and record test signals to and from a device under test.

MATAA runs on all sorts of computer platforms because it uses Matlab or GNU Octave as a base (these are powerful number crunching programs which provide a huge toolbox of routines for data analysis and processing). This explains why MATAA is so flexible and easily extendible with custom test signals, data analyses, plotting procedures, and scrips to automate routine measurements.

MATAA is distributed as free software under the GNU General Public License." http://audioroot.net/mataa-mats-audio-analyzer/ http://audioroot.net/wp-content/uploads/2014/08/MATAA_aX.pdf https://github.com/mbrennwa/mataa