Pythonic Virtual Machine
SKBP Class Reference

Detailed Description

ActiveHighPass.png
schema

Takes a signal in and passes it through a Band pass filter using the Sallen-Key topology

Initialisation parameters:

  • gain = output gain
  • fc = the central frequency
  • band = The band of frequncies that will be filtered.
  • pushed = True|False push the output buffer immediately if True

Input channels:

  • signal = incoming signal

Output channels:

  • out = $ G\frac{band \cdot dt\cdot(x(t) - x(t-2dt)) + band \cdot dt \cdot (2 \cdot y \cdot (t-dt) - y \cdot (t-2 \cdot dt)) }{ 1 + band \cdot dt + \omega ^2 _c } $ where $ x $ is the input signal, $ y $ is the input signal, $ \omega_{c} = 2 \pi f_c $ is the cut off pulse $ Q $ is the quality factor and $ dt $ is the timestep.

Examples:

1 machine.AddCircuit(type='SKBP', name='filter', fc=50, band=5, pushed='True')
2 machine.AddCircuit(type='SKBP', name='filter', gain=10, fc=50, band=5, pushed='True')

Inherits Circuit.

Additional Inherited Members

- Public Attributes inherited from Circuit
 name
 Name of the circuit. More...
 
 enabled
 if it is working... More...
 
 machine
 Reference to the virtual machine to which this circuit belongs. More...
 
 pushed
 Push output buffer at the end of Update. More...
 
 I
 Dictionary of input channels.
 
 O
 Dictionary of output channels.
 
 cCoreID
 index of circuit in cCore
 
Documentation for pyVAFM
Generated on Wed Feb 8 2017 10:13:49 for pyVAFM by doxygen 1.8.9.1

Home
Copyright © 2013 Regents of Aalto University