A rule-based text-to-speech system for Portuguese

Oliviera, L.C.; Viana, M. Céu; Trancoso, Isabel

doi:10.1109/icassp.1992.226117

Cited by 12 publications

(5 citation statements)

References 3 publications

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“…In our first rule-based system for EP (DIXI [5]), the rules were written in the usual form φ → ψ/λ ρ where φ, ψ, λ and ρ can be regular expressions that refer to one or multiple levels. The meaning of the rules was the following: when φ was found in the context with λ on the left and ρ on the right, ψ would be applied, replacing it or filling a different level of ψ.…”

Section: Rule Formalismmentioning

confidence: 99%

From Portuguese to Mirandese: Fast Porting of a Letter-to-Sound Module Using FSTs

Trancoso

Viana

Barros

et al. 2003

Lecture Notes in Computer Science

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Abstract. This paper describes our efforts in porting our letter-tosound module from European Portuguese to Mirandese, the second official language in Portugal. We describe the rule formalism and the composition of the various transducers involved in the letter-to-sound conversion. We propose a set of extra SAMPA symbols to be used in the phonetic transcription of Mirandese, and we briefly cover the set of rules and results obtained for the two languages. Although at a very preliminary stage, we also describe our efforts at building a waveform generation module also based on finite state transducers. The use of finite state transducers allowed a very flexible and modular framework for deriving and testing new rule sets. Our experience led us to believe that letterto-sound modules could be helpful tools for researchers involved in the establishment of orthographic conventions for lesser spoken languages.

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Section: Rule Formalismmentioning

confidence: 99%

From Portuguese to Mirandese: Fast Porting of a Letter-to-Sound Module Using FSTs

Trancoso

Viana

Barros

et al. 2003

Lecture Notes in Computer Science

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“…It acts like a bridge during human-computer interaction, enabling machines to communicate like real humans with understandable languages (Bharadiya, 2023). TTS technology has gone through a long history, which evolved from a rule-based synthesis (Oliviera et al, 1992) to a concatenative generation model (Lee and Cox, 2002), and then upgraded to a statistical parametric structure (Zen, 2015).…”

Section: Introductionmentioning

confidence: 99%

SR-TTS: a rhyme-based end-to-end speech synthesis system

Yao,

Liang,

Feng

et al. 2024

Front. Neurorobot.

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Deep learning has significantly advanced text-to-speech (TTS) systems. These neural network-based systems have enhanced speech synthesis quality and are increasingly vital in applications like human-computer interaction. However, conventional TTS models still face challenges, as the synthesized speeches often lack naturalness and expressiveness. Additionally, the slow inference speed, reflecting low efficiency, contributes to the reduced voice quality. This paper introduces SynthRhythm-TTS (SR-TTS), an optimized Transformer-based structure designed to enhance synthesized speech. SR-TTS not only improves phonological quality and naturalness but also accelerates the speech generation process, thereby increasing inference efficiency. SR-TTS contains an encoder, a rhythm coordinator, and a decoder. In particular, a pre-duration predictor within the cadence coordinator and a self-attention-based feature predictor work together to enhance the naturalness and articulatory accuracy of speech. In addition, the introduction of causal convolution enhances the consistency of the time series. The cross-linguistic capability of SR-TTS is validated by training it on both English and Chinese corpora. Human evaluation shows that SR-TTS outperforms existing techniques in terms of speech quality and naturalness of expression. This technology is particularly suitable for applications that require high-quality natural speech, such as intelligent assistants, speech synthesized podcasts, and human-computer interaction.

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“…None of the texts (including the NWS passage) has been analysed to determine if they are phonetically balanced in Portuguese. There has been a recent attempt (Mendes et al 2012) to build a specific text for voice assessment, but the frequency data used (Oliveira, Viana & Trancoso 1992, Viana et al 1994) is outdated (collected during the 1980s; see Segura 2013 for an updated account on dialectal variation) and the Mendes et al (2012) paper includes no phonetic transcription of the text.…”

Section: Introductionmentioning

confidence: 99%

Is the Portuguese version of the passage ‘The North Wind and the Sun’ phonetically balanced?

Jesus

Valente

Hall

2015

Journal of the International Phonetic Association

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There is no standard phonetically balanced short passage for Portuguese research and clinical practice. This paper presents results of a novel analysis of ‘The North Wind and the Sun’ (NWS) passage that aims to determine if it is phonetically balanced for European Portuguese (EP) and Brazilian Portuguese (BP), based on new transcriptions resulting from algorithms developed for grapheme–phone transcription in these two varieties of Portuguese. These algorithms (based on standard EP and São Paulo BP varieties) are the same as those used to collect the frequency data, which is central to determining if a text is phonetically balanced. Results showed that neither transcription violates phonotactic rules, i.e. permissible combinations of speech sounds. The NWS is not phonetically balanced for BP if the phonemes are considered individually but is evenly distributed in terms of manner of articulation. The EP version of the NWS passage is a phonetically balanced text for EP.

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A rule-based text-to-speech system for Portuguese

Cited by 12 publications

References 3 publications

From Portuguese to Mirandese: Fast Porting of a Letter-to-Sound Module Using FSTs

From Portuguese to Mirandese: Fast Porting of a Letter-to-Sound Module Using FSTs

SR-TTS: a rhyme-based end-to-end speech synthesis system

Is the Portuguese version of the passage ‘The North Wind and the Sun’ phonetically balanced?

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