Short-term cepstral analysis (From the 'wrassp' package)
cepstrum.Rdcalculate cepstral coefficients using libassp
Usage
cepstrum(
listOfFiles = NULL,
optLogFilePath = NULL,
beginTime = 0,
centerTime = FALSE,
endTime = 0,
resolution = 40,
fftLength = 0,
windowShift = 5,
window = "BLACKMAN",
toFile = TRUE,
explicitExt = NULL,
outputDirectory = NULL,
forceToLog = useWrasspLogger,
verbose = TRUE
)Arguments
- listOfFiles
vector of file paths to be processed by function
- optLogFilePath
path to option log file
- beginTime
= <time>: set begin of analysis interval to <time> seconds (default: begin of data)
- centerTime
= <time>: set single-frame analysis with the analysis window centred at <time> seconds; overrules beginTime, endTime and windowShift options
- endTime
= <time>: set end of analysis interval to <time> seconds (default: end of data)
- resolution
= <freq>: set FFT length to the smallest value which results in a frequency resolution of <freq> Hz or better (default: 40.0)
- fftLength
= <num>: set FFT length to <num> points (overrules default and 'resolution' option)
- windowShift
= <dur>: set analysis window shift to <dur> ms (default: 5.0)
- window
= <type>: set analysis window function to <type> (default: BLACKMAN)
- toFile
write results to file (default extension depends on )
- explicitExt
set if you wish to override 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
Short-term cepstral analysis of the signal in <listOfFiles> using the Fast Fourier Transform. The number of coefficients per output record will also equal the FFT length / 2 + 1 (i.e. be non-mirrored). Analysis results will be written to a file with the base name of the input file and as extension '.cep'. Default output is in SSFF format with 'cep' as track name.