ch_wave nist to esps to nist: pass ch_wave nist to snd to nist: pass ch_wave nist to riff to nist: pass ch_wave nist to audlab to nist: pass ch_wave nist to aiff to nist: pass ch_wave nist to est to nist: pass ch_wave raw binary test: pass ch_wave raw ascii test: pass ch_wave byte order test: pass ch_wave stdio test1: pass ch_wave stdio test2: pass ch_wave stdio test3: pass ch_wave stdio test4: pass ch_wave subwave test1: pass ch_wave subwave test2: pass ch_wave concat : pass ch_wave channel combine/extract : pass ch_wave default file type: pass Duration: 0.0724 Sample rate: 8000 Number of samples: 579 Number of channels: 1 Header type: nist Data type: short Duration: 0.3144 Sample rate: 8000 Number of samples: 2515 Number of channels: 1 Header type: nist Data type: short Duration: 0.6118 Sample rate: 8000 Number of samples: 4894 Number of channels: 1 Header type: nist Data type: short Duration: 0.5088 Sample rate: 8000 Number of samples: 4070 Number of channels: 1 Header type: nist Data type: short ch_wave key extract : pass Duration: 2.0182 Sample rate: 8000 Number of samples: 16146 Number of channels: 1 Header type: nist Data type: short Usage: ch_wave [input file0] [input file1] ... -o [output file] Summary: change/copy/combine waveform files use "-" to make input and output files stdin/out -h Options help -itype 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 -n Number of channels in an unheadered input file -f Sample rate in Hertz for an unheadered input file -ibo 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) -iswap Swap bytes. (For use on an unheadered input file) -istype Sample type in an unheadered input file: short, mulaw, byte, ascii -c Select a single channel (starts from 0). Waveforms can have multiple channels. This option extracts a single channel for progcessing and discards the rest. -start Extract sub-wave starting at this time, specified in seconds -end Extract sub-wave ending at this time, specified in seconds -from Extract sub-wave starting at this sample point -to Extract sub-wave ending at this sample point -o Output filename. If not specified output is to stdout. -otype 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 -F Output sample rate in Hz. If this is different from the input sample rate, resampling will occur -obo 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) -oswap Swap bytes when saving to output -ostype Output sample type: short, mulaw, byte or ascii -scale Scaling factor. Increase or descrease the amplitude of the whole waveform by the factor given -scaleN Scaling factor with normalization. The waveform is scaled to its maximum level, after which it is scaled by the factor given -lpfilter 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 -hpfilter 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. -forder 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. -fafter Do filtering after other operations such as resampling (default : filter before other operations) -info Print information about file and header. This option gives useful information such as file length, sampling rate, number of channels etc No output is produced -add A new single channel waveform is created by adding the corresponding sample points of each input waveform -pc Combine input waveforms to form a single multichannel waveform. The argument to this option controls how long the new waveform should be. If the option is LONGEST, the output wave if the length of the longest input wave and shorter waves are padded with zeros at the end. If the option is FIRST, the length of the new waveform is the length of the first file on the command line, and subsequent waves are padded or cut to this length -key Label file designating subsections, for use with -divide. The KEYLAB file is a label file which specifies where chunks (such as individual sentences) in a waveform begin and end. See section of wave extraction. -divide Divide a single input waveform into multiple output waveforms. Each output waveform is extracted from the input waveform by using the KEYLAB file, which specifies the start and stop times for each chunk. The output files are named according to the filename in the KEYLAB file, with extension given by -ext. See section on wave extraction -ext File extension for divided waveforms -extract Used in conjunction with -key to extract a single section of waveform from the input waveform. The argument is the name of a file given in the file column of the KEYLAB file. Duration: 2.0182 Sample rate: 8000 Number of samples: 16146 Number of channels: 1 Header type: nist Data type: short Duration: 2.0637 Sample rate: 20000 Number of samples: 41274 Number of channels: 1 Header type: nist Data type: short Duration: 2.0714 Sample rate: 8000 Number of samples: 16571 Number of channels: 1 Header type: nist Data type: short