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control.matlab.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
• Control System Classes
• Package Configuration Parameters
• MATLAB Compatibility Module
  • Creating Linear Models
  • Utility Functions and Conversions
    • control.matlab.mag2db
      • mag2db()
    • control.matlab.db2mag
    • control.matlab.c2d
    • control.matlab.ss2tf
    • control.matlab.tf2ss
    • control.matlab.tfdata
  • System Interconnections
  • System Gain and Dynamics
  • Time-Domain Analysis
  • Frequency-Domain Analysis
  • Compensator Design
  • State-space (SS) Models
  • Model Simplification
  • Time Delays
  • Matrix Equation Solvers and Linear Algebra
  • Additional Functions
  • Functions Imported from Other Packages
• Developer Notes
• Release Notes

• MATLAB Compatibility Module
• control.matlab.mag2db
• View page source

control.matlab.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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