Channel Type Numberring Scheme

EST_ChannelTypeCT	extract the coefficient type
EST_ChannelTypeD	extract the number of differentiations
EST_ChannelTypeSE	extract the start/end flag
EST_ChannelTypeStart	get start from end
EST_ChannelTypeEnd	get end from start
EST_ChannelTypeIncD	differentiate once
EST_ChannelTypeDelta	differentiate N times
EST_ChannelTypeDecD	integrate once
EST_CoefChannelId	Build a number representing a channel type for a coeficient type.
EST_DiffChannelId	Build a number representing a channel type for a single value which can N = count starting from 0 D = Number of levels of differentiation.
EST_ChannelId	Build a number representing a channel type for a simple value such as length or voicing probability

Channel types are given numbers containing the following information:

• A numeric index.
• A Number of differentiations 0-2
• 0 for start, 1 for end

Things which do not require all these features are packed in according to the following rules:

• Single values which can be differentiated are paired as if they were start and end positions of an unuknown type of coefficient.
• Single vaules which can't be differentiated are put in the positions where the 3rd derivatives would logically be found.

Alphabetic index Hierarchy of classes

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