| -h |
Options help |
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| -itype | string
Input file type (optional). If set to raw, this
indicates that the input file does not have a header. While
this can be used to specify file types other than raw, this is
rarely used for other purposes
as the file type of all the existing supported
types can be determined automatically from the
file's header. If the input file is unheadered,
files are assumed to be shorts (16bit).
Supported types are
nist, est, esps, snd, riff, aiff, audlab, raw, ascii |
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| -n | int
Number of channels in an unheadered input file |
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| -f | int
Sample rate in Hertz for an unheadered input file |
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| -ibo | string
Input byte order in an unheadered input file:
possibliities are: MSB , LSB, native or nonnative.
Suns, HP, SGI Mips, M68000 are MSB (big endian)
Intel, Alpha, DEC Mips, Vax are LSB (little
endian) |
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| -iswap |
Swap bytes. (For use on an unheadered input file) |
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| -istype | string
Sample type in an unheadered input file:
short, mulaw, byte, ascii |
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| -c | string
Select a single channel (starts from 0).
Waveforms can have multiple channels. This option
extracts a single channel for progcessing and
discards the rest. |
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| -start | float
Extract sub-wave starting at this time, specified in
seconds |
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| -end | float
Extract sub-wave ending at this time, specified in
seconds |
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| -from | int
Extract sub-wave starting at this sample point |
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| -to | int
Extract sub-wave ending at this sample point |
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| -o | ofile
Output filename. If not specified output is
to stdout. |
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| -otype | string
Output file type, (optional). If no type is
Specified the type of the input file is assumed.
Supported types are:
nist, est, esps, snd, riff, aiff, audlab, raw, ascii |
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| -F | int
Output sample rate in Hz. If this is different
from the input sample rate, resampling will occur |
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| -obo | string
Output byte order: MSB, LSB, native, or nonnative.
Suns, HP, SGI Mips, M68000 are MSB (big endian)
Intel, Alpha, DEC Mips, Vax are LSB
(little endian) |
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| -oswap |
Swap bytes when saving to output |
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| -ostype | string
Output sample type: short, mulaw, byte or ascii |
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| -scale | float
Scaling factor. Increase or descrease the amplitude
of the whole waveform by the factor given |
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| -scaleN | float
Scaling factor with normalization.
The waveform is scaled to its maximum level, after which
it is scaled by the factor given |
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| -double |
Perform double filtering by applying a forward filter,
then a backward filter, leaving the filtered signla in phase
with the original |
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| -lpfilter | int
Low pass filter, with cutoff frequency in Hz
Filtering is performed by a FIR filter which is built at run
time. The order of the filter can be given by -forder. The
default value is 199 |
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| -hpfilter | int
High pass filter, with cutoff frequency in Hz
Filtering is performed by a FIR filter which is
built at run time. The order of the filter can
be given by -forder. The default value is 199. |
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| -forder | int
Order of FIR filter used for lpfilter and
hpfilter. This must be ODD. Sensible values range
from 19 (quick but with a shallow rolloff) to 199
(slow but with a steep rolloff). The default is 199. |
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| -lpcfilter | ifile
Track file containing lpc filter coefficients |
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| -firfilter | ifile
File containing a single set of FIR filter
coefficients |
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| -inv_filter |
use filter coefficients for inverse filtering |
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