The utility group consists of modules, used by the other modules, which do not have a specific category. The modules contain lightweight, stand-alone routines which do not require initialisation. They can also be included in user programs. All module file names are prefixed with, "Ut".
module deals with the CFList data structure, which holds the data required for
a list of centre frequencies (CF's) to be passed to a basilar membrane filter
module (revised from the original version by M.A. Stone, Cambridge, Sept. 1992)
contains routines to handle complex numbers.
equivalent rectangular bandwidth (ERB) conversion routines are based in this
module. Converting Frequency: Converting frequency to and From ERB's and Erb
filters can be found in this module, including digital gamma tone and band pass
filters. These routines are called by the modules which require these filters,
e.g. the PreEmphasis and BasilarM modules.
routines in this module operate on the output signal of an EarObject,
introducing ramps at the start/end of a signal as required.
module contains a portable random number generator, and the associated routines.
I/O routines for IEEE floating-point numbers, implemented by Malcolm Slaney and
Ken Turkowski (1991).
I/O routines for 8-, 16-, 24-, and 32-bit integers, implemented by Malcolm
Slaney and Ken Turkowski.