Effects of compound parameters on speaker-independent word recognition.
スポンサーリンク
概要
- 論文の詳細を見る
We have been developing the speech visualization system as a speech training aid for the hearing impaired. This research has been carried out to build up a recognition system by which it is possible to represent a phoneme sequence on a display screen together with the visualized speech. This kind of system requires to recognize 20-50 isolated words which are spoken by anyone. Moreover, it is desirable that the vocabulary (20-50 words) of the dictionary can freely and easily be constructed or changed. Although the system which has phoneme standard patterns independently of the word dictionary is reasonable to achieve the aim, generally it will not always show a high recognition rate to a large vocabulary. In order to realize the high performance system which satisfies the above requirement, new speech parameters which are mutually complementary for the recognition have been adopted. A local distance between an input frame and each of 32 phoneme categories has been defined as a weighted sum of distances of the parameters because their dimensions are not the same. The weights have been decided to maximize phoneme recognition rates and tested for the word recognition. As a result, the addition of parameters was very effective and the recognition rates by the proposed parameters were much higher than by usually used one. When 50 words uttered by 30 males from two different databases were tested, the recognition rates were 97.2% and 98.3% in Bayes-decision-rule based distance.
- 一般社団法人 日本音響学会の論文
一般社団法人 日本音響学会 | 論文
- How large is the individual difference in hearing sensitivity?: Establishment of ISO 28961 on the statistical distribution of hearing thresholds of otologically normal young persons
- Applying generation process model constraint to fundamental frequency contours generated by hidden-Markov-model-based speech synthesis
- Vocal cord vibration in the production of consonants. Observation by means of high-speed digital imaging using a fiberscope.:Observation by means of high-speed digital imaging using a fiberscope
- The early reflections of the impulse response in an auditorium.
- Multiple reflections between rigid plane panels.