Audio recordings from the Appendix of D. Klatt, "Review of text-to-speech conversion for English," J. of the Acoustical Society of America, 82(3) September 1987.
Part A: Development of speech synthesizers
- Example 1 The VODER of Homer Dudley, 1939.
- Example 2 The Pattern Playback designed by Franklin Cooper, 1951.
- Example 3 PAT, the "Parametric Articficial Talker" of Walter Lawrence, 1953.
- Example 4 The "OVE" cascade formant synthesizer of Gunnar Fant
- Example 5 Copying a natural sentence using Walter Lawerence's PAT formant synthesizer, 1962.
- Example 6 Copying the same sentence using the second generation of Gunar Fant's OVE cascade formant synthesizer, 1962.
- Example 7 Comparison of synthesis and a natural sentence, using OVE II, by John Holmes, 1961
- Example 8 Comparison of synthesis and a natural sentence, John Holmes using his parallel formant synthesizer, 1973.
- Example 9 Attempting to scale the DECtalk male voice to make it sound female.
- Example 10 Comparison of synthesis and a natural sentence, fremale voice, Dennis Klatt, 1986b,
- Example 11 The DAVO articulatory synthesizer developed by George Rosen at M.I.T., 1958.
- Example 12 Sentences produced by an articulatory model, James Flanagan and Kenzo Ishizaka, 1976
- Example 13 Linear-prediction analysis and resynthesis of speech at a low-bit rate in the Texas Instruments Speek'n'Spell toy, Richard Wiggins, 1980.
- Example 14 Comparison of synthesis and a natural recording, automatic analysis-resynthesis using multipults linear prediction, Bishnu Atal, 1982.
Part B: Segmental synthesis by rule
- Example 15 Creation of a sentence from rules in the head of Pierre Delattre, using the Haskins Pattern Playback, 1959.
- Example 16 Output from the first computer-based phonemic-synthesis-by-rule program, created by John Kelly and Louis Gerstman, 1961.
- Example 17 Elegant rule program for British English by John Holmes, Ignatius Mattingly, and John Shearme, 1964.
- Example 18 Formant synthesis using diphone concatenation, by Rex Dixon and David Maxey, 1968.
- Example 19 Rules to control a low-dimensionality articulatory model, by Cecil Coker, 1968.
Part C: Synthesis by rule of segments and sentence prosody
- Example 20 First prosodic synthesis by rule, by Ignatius Mattingly, 1968.
- Example 21 Sentence-level phonology incorporated in rules by Dennis Klatt, 1976.
- Example 22 Concatenation of linear-prediction diphones, by Joe Olive, 1977.
- Example 23 Concatenation of linear-prediction demisylables by Catherine Browman, 1980.
Part D: Fully Automatic text-to-speech conversion
- Example 24 The first full text-to-speech system, done in Japan by Noriko Umeda et al., 1968.
- Example 25 The first Bell Laboraatories text-to-speech system by Cecil Coker, Noriko Umeda, and Catherine Browman, 1973.
- Example 26 The Haskins Laboratories text-to-speech system, 1973.
- Example 27 The Kurzweil reading machine for the blind, Raymond Kurzweil, 1976.
- Example 28 The inexpensive Votrax Type-n-Talk system, by Richard Gagnon, 1978.
- Example 29 The Echo low-cost diphone concatenation system, about 1982.
- Example 30 The M.I.T. MITalk system by Jonathan Allen, Sheri Hunnicut, and Dennis Klatt, 1979.
- Example 31 The multi-language Infovox system, by Rolf Carlson, Bjorn Granstrom, and Sheri Hunnicut, 1982.
- Example 32 The Speech Plus Inc. "Prose-2000" commercial system, 1982.
- Example 33 The Klattalk system by Dennis Klatt of M.I.T. which formed the basis for Digital Equiptment Corporation's DECtalk commercial systenm 1983.
- Example 34 The AT&T Bell Laboratories text-to-speech system, 1985.
- Example 35 Several of the DECtalk voices.
- Example 36 DECtalk speaking at about 300 words/minute.
Whole recording (zipped)
Thanks to Nelson Morgan, Jeff Gilbert, and Eric Fosler of ICSI-Berkeley for these samples.(email@example.com)