HQSYNTH

NAME

HQsynth - High quality formant synthesis

SYNOPSIS

HQsynth (-i item) (-c) (-r|-e) file

DESCRIPTION

HQsynth performs excitation-synchronous formant synthesis from a set of formant estimates using an LPC synthesis model using the procedure of Melvyn Hunt. Input should be an FM item produced by HQanal (originally), and a residual waveform ("-r" option) if required. A prototype voiced excitation waveform may be suppied ("-e" option), preferably generated by HQrsav. Output is a speech waveform. De-emphasis is applied to the voiced regions only.

Options and their meanings are:

-I Identify program and version number.

-i item Select input item number.

-c Use LPC coefficients as input instead of formant estimates.

-r Use residual waveform for excitation, rather than a synthetic excitation waveform.

-e Use a prototype excitation waveform included in file (LX item of 200 samples) instead of default pulse.

INPUT ITEMS

12.xx HQanal analysed formant estimates.

2.xx Optional residual waveform (matched to output waveform).

2.xx Optional prototype excitation waveform (200 samples @ 10kHz).

14.xx Optional LPC coefficients.

OUTPUT ITEMS

1 High Quality formant resynthesized speech.

VERSION/AUTHOR

1.2 - Mark Huckvale (from fmconv and syn by Lynn Whitaker)

SEE ALSO

"Generation of controlled speech stimuli by pitch-synchronous LPC analysis of natural utterances", M.J. Hunt & C.E. Harvenberg, 12th Intl. Congress on Acoustics, Toronto Canada, 1986.

BUGS

HQsynth is not compatible with formant items produced by rootlpc or from ILS. Analysis must be performed by HQanal.
Wed Jul 17 22:31:36 2013