dbphi frequency response to phase and magnitude representation

## Syntax

    [db, phi] = dbphi(repf)

## Arguments

db,phi

  vector of gains (db) and phases (degrees)

repf

  vector of complex frequency response

## Description

`db(k)` is the magnitude of `repf(k)` expressed in dB i.e. `db(k)=20*log(abs(repf(k)))/log(10)` and `phi(k)` is the phase of `repf(k)` expressed in degrees.

## See also

- repfreq
- bode