Reference guide

Copyright (c) 2012-2015, Sergio Callegari Some code ported from the DELSIG toolbox, copyrighted by R. Schreier.

The current codebase comprises both code that is specific to PyDSM and code ported from the DELSIG Toolbox by R. Schreier. This is reflected in the module organization of PyDSM.

Currently, the DELSIG port is rather limited and just includes what is useful for comparison to the specific PyDSM algorithms.

Right now, PyDSM is mostly specialized in the design of Noise Transfer Functions for Digital ΔΣ Modulators and in the simulation of the resulting modulators.

Main modules

• Code ported from the DELSIG toolbox by R. Schreier (pydsm.delsig)
• Synthesis of the NTF of Delta Sigma modulators (pydsm.NTFdesign)
• Simulation of Delta Sigma modulators (pydsm.simulation)
• Acoustic weighting functions (pydsm.audio_weightings)
• ISO 226 loudness countours (pysdm.iso226)

Utility modules

• Correlation utilities (pydsm.correlations)
• Fourier transform related routines (pydsm.ft)
• Computation of the impulse response of a DT filter (pydsm.ir)
• Compatibility functions for PyDSM (pydsm.relab)
• Generic utility functions (pydsm.utilities)

Error handling

• Exceptions and warnings (pydsm.exceptions)