In file ../include/EST_ChannelType.h:

## enum EST_ChannelType

> Symbolic names for track channels.

channel_unknown
  Value to return for errors, never occurs in TrackMaps
channel_order
  order of analysis
first_channel_type
  So we know how many there are
channel_peak
  Peak amplitude
channel_duration
  Duration of section of signal
channel_length
  Length of section in samples
channel_offset
  Offset from frame center to center of window
channel_voiced
  Voicing decision
channel_frame
  Number of related frame in another track
channel_time
  Time in seconds this frame refers to
channel_power
  RMS power of section of signal
channel_energy
  RMS energy of section of signal
channel_f0
  F0 in Hz
num_channel_types
  Can be used to size arrays etc

## Documentation

> Symbolic names for track channels. Used in track maps to label channels so they can be accessed without knowing exactly where in the track they are.

`channel_unknown`
  Value to return for errors, never occurs in TrackMaps

`channel_order`
  order of analysis

`first_channel_type`
  So we know how many there are

`channel_peak`
  Peak amplitude

`channel_duration`
  Duration of section of signal

`channel_length`
  Length of section in samples

`channel_offset`
  Offset from frame center to center of window

`channel_voiced`
  Voicing decision

`channel_frame`
  Number of related frame in another track

`channel_time`
  Time in seconds this frame refers to

`channel_power`
  RMS power of section of signal

`channel_energy`
  RMS energy of section of signal

`channel_f0`
  F0 in Hz

`num_channel_types`
  Can be used to size arrays etc

Author:
  Richard Caley <rjc@cstr.ed.ac.uk>
Version:
See Also:
  EST_CoefficientType
  EST_TrackMap
  EST_Track
  EST_TrackMap:example

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This page is part of the Edinburgh Speech Tools Library documentation
Copyright University of Edinburgh 1997
Contact: speech_tools@cstr.ed.ac.uk