Track file manipulation

Synopsis

ch_track [input file] -o [output file] [options] [-h ] [-itype string] [-ctype string] [-s float] [-startt float] [-c string] [-start float] [-end float] [-from int] [-to int] [-otype string] [-S float] [-o ofile] [-info ] [-track_names string] [-diff ] [-delta int] [-sm float] [-smtype string] [-style string] [-t float] [-neg string] [-pos string] [-pc string]

ch_track is used to manipulate the format of a track file. Operations include:

• file format conversion
• smoothing
• changing the frame spacing of a track (resampling)
• producing differentiated and delta tracks
• Using a threshold to convert a track file to a label file

• making multiple input files into a single multi-channel output file
• extracting a single channel from a multi-channel track
• extracting a time-delimited portion of the waveform

Options

• -h: Options help

• -itype: string Input file type (optional). If no type is specified type is automatically derived from file's header. Supported types are: none, esps, est, est_binary, htk, htk_fbank, htk_mfcc, htk_mfcc_e, htk_user, htk_discrete, ssff, xmg, xgraph, ema, ema_swapped, ascii

• -ctype: string Contour type: F0, track

• -s: float Frame spacing of input in seconds, for unheadered input file

• -startt: float Time of first frame, for formats which don't provide this

• -c: string Select a subset of channels (starts from 0). Tracks can have multiple channels. This option specifies a list of numbers, refering to the channel numbers which are to be used for for processing.

• -start: float Extract track starting at this time, specified in seconds

• -end: float Extract track ending at this time, specified in seconds

• -from: int Extract track starting at this frame position

• -to: int Extract track ending at this frame position

• -otype: string " {ascii}" Output file type, if unspecified ascii is assumed, types are: none, esps, est, est_binary, htk, htk_fbank, htk_mfcc, htk_mfcc_e, htk_user, htk_discrete, ssff, xmg, xgraph, ema, ema_swapped, ascii, label

• -S: float Frame spacing of output in seconds. If this is different from the internal spacing, the contour is resampled at this spacing

• -o: ofile Output filename, defaults to stdout

• -info: Print information about file and header. This option gives useful information such as file length, file type, channel names. No output is produced

• -track_names: string File containing new names for output channels

• -diff: Differentiate contour. This performs simple numerical differentiation on the contour by subtracting the amplitude of the current frame from the amplitude of the next. Although quick, this technique is crude and not recommende as the estimation of the derivate is done on only one point

• -delta: int Make delta coefficients (better form of differentiate). The argument to this option is the regression length of of the delta calculation and can be between 2 and 4

• -sm: float Length of smoothing window in seconds. Various types of smoothing are available for tracks. This options specifies length of the smooting window which effects the degree of smoothing, i.e. a longer value means more smoothing

• -smtype: string Smooth type, median or mean

• -style: string Convert track to other form. Currently only one form "label" is supported. This uses a specified cut off to make a label file, with two labels, one for above the cut off (-pos) and one for below (-neg)

• -t: float threshold for track to label conversion

• -neg: string Name of negative label in track to label conversion

• -pos: string Name of positive label in track to label conversion

• -pc: string Combine given tracks in parallel. If option is longest, pad shorter tracks to longest, else if first pad/cut to match first input track AvailablE track file formats: none unknown track file type esps entropic sps file est Edinburgh Speech Tools track file est_binary Edinburgh Speech Tools track file htk htk file htk_fbank htk file (as FBANK) htk_mfcc htk file (as MFCC) htk_mfcc_e htk file (as MFCC_E) htk_user htk file (as USER) htk_discrete htk file (as DISCRETE) ssff Macquarie University's Simple Signal File Format xmg xmg file viewer xgraph xgraph display program format ema ema ema_swapped ema, swapped ascii ascii decimal numbers