LPC¶

streaming mode | Spectral category

Inputs¶

frame (vector_real) - the input audio frame

Outputs¶

lpc (vector_real) - the LPC coefficients

reflection (vector_real) - the reflection coefficients

Parameters¶

order (integer ∈ [2, ∞), default = 10) :
the order of the LPC analysis (typically [8,14])

sampleRate (real ∈ (0, ∞), default = 44100) :
the sampling rate of the audio signal [Hz]

type (string ∈ {regular, warped}, default = regular) :
the type of LPC (regular or warped)

Description¶

This algorithm computes Linear Predictive Coefficients and associated reflection coefficients of a signal.

An exception is thrown if the “order” provided is larger than the size of the input signal.

References:

[1] Linear predictive coding - Wikipedia, the free encyclopedia, http://en.wikipedia.org/wiki/Linear_predictive_coding

[2] J. Makhoul, “Spectral analysis of speech by linear prediction,” IEEE Transactions on Audio and Electroacoustics, vol. 21, no. 3, pp. 140–148, 1973.

Source code¶

C++ source code

C++ header file