= <time>: set begin of analysis interval to <time> seconds (default = 0: begin of data)
endTime
= <time>: set end of analysis interval to <time> seconds (default = 0: end of data)
windowShift
= <dur>: set analysis window shift to <dur> ms (default: 5.0)
windowSize
= <dur>: set analysis window size to <dur> ms (default: 30.0)
effectiveLength
make window size effective rather than exact
nominalF1
= <freq>: set nominal F1 frequency to <freq> Hz (default: 500.0 Hz)
gender
= <code>: set gender specific parameters where
<code> = f[emale], m[ale] or u[nknown] (when <code>=f: eff. window length = 12.5 ms nominal F1 = 560.0 Hz)
estimate
insert rough frequency estimates of missing formants (default: frequency set to zero)
order
decrease default order by 2 (one resonance less)
incrOrder
increase default order by 2 (one resonance more)
numFormants
= <num>: set number of formants to <num> (default: 4; maximum: 8 or half the LP order)
window
= <type>: set analysis window function to <type> (default: BLACKMAN)
preemphasis
= <val>: set pre-emphasis factor to <val> (-1 <= val <= 0)
(default: dependent on sample rate and nominal F1)
toFile
write results to file (default extension is .fms)
explicitExt
set if you wish to overwride the default extension
outputDirectory
directory in which output files are stored. Defaults to NULL, i.e.
the directory of the input files
forceToLog
is set by the global package variable useWrasspLogger. This is set
to FALSE by default and should be set to TRUE is logging is desired.
verbose
display infos & show progress bar
Details
Formant estimation of the signal(s) in <listOfFiles>.
Raw resonance frequency and bandwidth values are
obtained by root-solving of the Linear Prediction
polynomial from the autocorrelation method and the
Split-Levinson-Algorithm (SLA). Resonances are then
classified as formants using the so-called Pisarenko
frequencies (by-product of the SLA) and a formant
frequeny range table derived from the nominal F1
frequency. The latter may have to be increased by
about 12% for female voices (see NominalF1 and Gender options).
Formant estimates will be written to a file with the
base name of the input file and extension '.fms'.
Default output is in SSFF binary format (tracks 'fm'
and 'bw')
Value
nrOfProcessedFiles or if only one file to process return AsspDataObj of that file