FXAC

NAME

fxac - estimate fx from sp using autocorrelation

SYNOPSIS

fxac (-i item) (-d) (-l lofreq) (-h hifreq) (-w wintime) (-s steptime) file

DESCRIPTION

fxac estimates FX from a speech or Laryngograph waveform by the following process: (i) cubing waveform sample values, (ii) autocorrelation, and (iii) voicing & fundamental frequency decision. The output FX is estimated in 25ms windows with a repetition time of 5ms.

Options and their meanings are:

-I Identify program and exit.

-i item Select input item number and type.

-d Output autocorrelation function as DISPLAY item.

-l lofreq Set lowest Fx value used in search. Default 60Hz.

-h lofreq Set highest Fx value used in search. Default 500Hz;

-w wintime Specify analysis windowsize in seconds. Default 0.03s;

-s steptime Specify analysis window stepsize in seconds. Default 0.005s;

INPUT ITEMS

1.xx Speech waveform.

2.xx Laryngograph waveform.

OUTPUT ITEMS

4 FX estimate by autocorrelation.

9 Autocorrelation display.

VERSION/AUTHOR

2.2 - Mark Huckvale.

SEE ALSO

fxcep(SFS1)
Wed Jul 17 22:31:34 2013