Speech Synthesis | Speech Technologies | InTechOpen
Lucent Technologies Bell Labs Text-to-Speech Synthesis demo
In 1979 Allen, Hunnicutt, and Klatt demonstrated the MITalk laboratory text-to-speech system developed at M.I.T. (track ). The system was used later also in Telesensory Systems Inc. (TSI) commercial TTS system with some modifications (Klatt 1987, Allen et al. 1987). Two years later Dennis Klatt introduced his famous Klattalk system (track ), which used a new sophisticated voicing source described more detailed in (Klatt 1987). The technology used in MITalk and Klattalk systems form the basis for many synthesis systems today, such as DECtalk (tracks -) and Prose-2000 (track ). For more detailed information of MITalk and Klattalk systems, see for example Allen et al. (1987), Klatt (1982), or Bernstein et al. (1980).
Why Synthesized Speech Sounds So Awful - MIT Technology Review
First articulatory synthesizer was introduced in 1958 by George Rosen at the Massachusetts Institute of Technology, M.I.T. (Klatt 1987). The DAVO (Dynamic Analog of the VOcal tract) was controlled by tape recording of control signals created by hand (track ). In mid 1960s, first experiments with Linear Predictive Coding (LPC) were made (Schroeder 1993). Linear prediction was first used in low-cost systems, such as TI Speak'n'Spell in 1980, and its quality was quite poor compared to present systems (track ). However, with some modifications to basic model, which are described later in , the method has been found very useful and it is used in many present systems.