“speech synthesis”的概念、定义、翻译、参考文献-科学参考

speech synthesis

Computer

The production of artificial speech for output by a D/A converter. The input is typically a file of text. The synthesis may be performed either by hardware or software, the Klatt synthesizer being an example. The methodology employed to produce the speech signal may be by concatenation of prerecorded words or of elements of real speech (such as phonemes), or by pure synthesis driven by data derived from a complex analysis of the input text.
The quality of the speech produced depends greatly on the techniques employed at both the lexical analysis phase and the synthesis phase. The particular problem with phoneme concatenation is how to actually perform the join since fluent speech requires fluent transitions. Other commonly used elements of speech are demisyllables, syllables, words, and word systems. As the units become longer, so the quality increases, but then so does the storage requirement and the processing overhead.

Electronics and Electrical Engineering

A system or algorithm that produces a speech output from an orthographic text input. A set of rules is employed to convert the orthographic input into appropriate low-level parameters to drive the synthesizer. Various methods for speech synthesis exist, including formant synthesis and diphone (or concatenative) synthesis.
In formant synthesis, the acoustic resonances of the human vocal tract are modelled using 4-pole band-pass filters whose centre frequency and bandwidth are modified to enable the effects of moving the articulators (jaw, tongue, lips, etc.) to be implemented. A voiced excitation is produced using a quasi-periodic waveform that mimics the acoustic excitation of the vibrating vocal folds, and a voiceless excitation is produced with random noise.
In diphone synthesis, recordings of a human speaker are stored, covering all the possible sounds of the language. These sounds are the links between the steady-state portions of speech (or ‘phones’), and are therefore known as ‘diphones’; any spoken message can be created by joining them together. This process is also known as concatenative synthesis, since the diphones are concatenated.

单词	speech synthesis
释义	speech synthesis Computer The production of artificial speech for output by a D/A converter. The input is typically a file of text. The synthesis may be performed either by hardware or software, the Klatt synthesizer being an example. The methodology employed to produce the speech signal may be by concatenation of prerecorded words or of elements of real speech (such as phonemes), or by pure synthesis driven by data derived from a complex analysis of the input text. The quality of the speech produced depends greatly on the techniques employed at both the lexical analysis phase and the synthesis phase. The particular problem with phoneme concatenation is how to actually perform the join since fluent speech requires fluent transitions. Other commonly used elements of speech are demisyllables, syllables, words, and word systems. As the units become longer, so the quality increases, but then so does the storage requirement and the processing overhead. Electronics and Electrical Engineering A system or algorithm that produces a speech output from an orthographic text input. A set of rules is employed to convert the orthographic input into appropriate low-level parameters to drive the synthesizer. Various methods for speech synthesis exist, including formant synthesis and diphone (or concatenative) synthesis. In formant synthesis, the acoustic resonances of the human vocal tract are modelled using 4-pole band-pass filters whose centre frequency and bandwidth are modified to enable the effects of moving the articulators (jaw, tongue, lips, etc.) to be implemented. A voiced excitation is produced using a quasi-periodic waveform that mimics the acoustic excitation of the vibrating vocal folds, and a voiceless excitation is produced with random noise. In diphone synthesis, recordings of a human speaker are stored, covering all the possible sounds of the language. These sounds are the links between the steady-state portions of speech (or ‘phones’), and are therefore known as ‘diphones’; any spoken message can be created by joining them together. This process is also known as concatenative synthesis, since the diphones are concatenated.
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