-I Identify program name and version number.
-i item Select input item number.
-r rate-change Relative speed up factor. 2.0 = twice as fast, 0.5=half as fast. Default 1.
-m MBROLA-control-file Specify a new duration for each annotated region using the format of an MBROLA control file. Respeed only looks at the first two entries on each line; the first should be the name of an annotated region, the second should be the required duration in milliseconds. Use the anmbrola program to build a default control file from a set of annotations.
SP Speech item
AN Annotation item (control file input).
SP Rate changed speech
rate= proportional rate-change.
control= Control file name
2.0 Mark Huckvale