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control.mag2db — Python Control Systems Library 0.10.2 documentation

User Guide

• 1. Introduction
• 2. Tutorial
• 3. Linear Systems
• 4. I/O Response and Plotting
• 5. Nonlinear Systems
• 6. Interconnected I/O Systems
• 7. Stochastic Systems
• 8. Examples
• Index

Reference Manual

• Function Reference
  • Available subpackages
  • System Creation
  • System Interconnections
  • Time Response
  • Frequency Response
  • Control System Analysis
  • Control System Synthesis
  • System ID and Model Reduction
  • Nonlinear System Support
  • Stochastic System Support
  • Matrix Computations
  • Utility Functions
    • control.augw
    • control.bdschur
    • control.db2mag
    • control.isctime
    • control.isdtime
    • control.iosys_repr
    • control.issiso
    • control.mag2db
      • mag2db()
    • control.reset_defaults
    • control.reset_rcParams
    • control.set_defaults
    • control.ssdata
    • control.timebase
    • control.unwrap
    • control.use_fbs_defaults
    • control.use_legacy_defaults
    • control.use_matlab_defaults
• Control System Classes
• Package Configuration Parameters
• MATLAB Compatibility Module
• Developer Notes
• Release Notes

• Function Reference
• control.mag2db
• View page source

control.mag2db(mag)[source]

Convert a magnitude to decibels (dB).

If A is magnitude,

db = 20 * log10(A)

Parameters:

magfloat or ndarray

Input magnitude or array of magnitudes.

Returns:

dbfloat or ndarray

Corresponding values in decibels.

Examples

>>> ct.mag2db(10.0)                                         
20.0

>>> ct.mag2db(np.array([1, 0.01]))                          
array([  0., -40.])

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