python-deltasigma is a Python package to synthesize, simulate, scale and map to implementable topologies Delta-Sigma modulators. It is a port of R. Schreier's MATLAB Toolbox. The 0.2 series features support for real and quadrature baseband and passband modulator topologies. CHANGELOG 0.2.0 : Add support for quadrature modulators. Add simulateQDSM(), Add synthesizeQNTF(), Add realizeQNTF(), Add simulateQSNR(), Add calculateQTF(). Several functions have been extended to support quadrature modulator.