In the table below, the standard data format for each item type is described. More technical descriptions of the data records are given in section 4 of the Programmer's Manual. By default all waveforms are assumed to be 16-bit data, so data of 12 or 8 bits should be shifted left in the word before use. Values are not cumulative, so that to find out when a pitch period took place it is necessary to count from the beginning. 1 frame is a fundamental frequency value in Hz.
Value is zero for unvoiced.
1 frame holds information about the physical realisation of a phonetic segment, including duration, pitch and acoustic parameters. 1 frame is a set of parameters for one control cycle of a formant synthesizer. 1 frame is an arc from a chart used in syntactic analysis of a passage of speech or for a word lattice in recognition. Each frame holds details of one word or one syntactic constituent. 1 frame is an encoded spectrum.