Provided are a subtitle synchronization device and a subtitle synchronization method based on speech recognition. The subtitle synchronization device comprises a speech recognition module, a dynamic sampling adjustment module, a subtitle semantic comparison module, a subtitle synchronization module and a subtitle display module. The speech recognition module is used for extracting speech in foreground voice from an audio stream, and sampling and recognizing the extracted speech to generate corresponding text information; the dynamic sampling adjustment module is used for evaluating the degree of semantic recognition of the generated text information, and controlling the speech recognition module to adjust the sampling frequency according to an evaluation result to obtain text information with high degree of semantic recognition; the subtitle semantic comparison module is used for carrying out semantic matching on the text information with high degree of semantic recognition and texts of additional subtitles in multiple languages of a broadcasted video; the subtitle synchronization module is used for adjusting time information of a subtitle file according to time information of the speech if the subtitle semantic comparison module finds out a sentence corresponding to the text information of the recognized speech in the subtitle file; and the subtitle display module is used for displaying subtitles according to the time information of the adjusted subtitle file.

Subtitle synchronization device and subtitle synchronization method based on speech recognition

The invention provides an automatic testing method and an automatic testing device The automatic testing method and the automatic testing device are used for performing automatic testing on a voice recognition system The automatic testing method includes the steps that a text file to be tested is read from pre-stored text files; the text file to be tested is converted into a voice file to be tested; the voice file to be tested is input into the voice recognition system to be recognized, and a voice recognition result returned by the voice recognition system is received The automatic testing method and the automatic testing device are particularly suitable for a large number of voice recognition tests and have the advantages of saving manpower resource and being high in testing efficiency

Automatic testing method and automatic testing device

The present invention discloses a voice recognition method and a device The method comprises the steps of firstly, acquiring the voice information input by a speaker and acquiring the information of the speaker; secondly, judging the existence/absence of a personal acoustic model corresponding to the speaker according to the information of the speaker; thirdly, upon judging the existence of the personal acoustic model, acquiring the personal acoustic model and conducting the voice recognition on the voice information according to the personal acoustic model of the speaker; fourthly, upon judging the absence of the personal acoustic model, conducting the voice recognition on the voice information according to a basic acoustic model, generating the corpus information of the speaker according to the voice information, and storing the corpus information; fifthly, generating a personal acoustic model for the speaker based on the basic acoustic model and the stored corpus information Based on the method, acoustic models can be customized for all speakers based on the characteristics of the speakers during the self-adaptive voice recognition process of the speakers Therefore, the recognition accuracy for each speaker is improved and the user experience is improved

Voice recognition method and device

The invention discloses an user-defined instruction recognition speech photographing system, the system comprises a speech instruction collecting module, an audio signal preprocessing module, an audio signal feature extraction module, a speech definition training module and a speech recognition control module, the speech instruction collecting module is used for collecting audio signals of a speech instruction; preprocessing and feature extraction are performed on the collected audio signal through the audio signal preprocessing module and the audio signal feature extraction module in sequence; the speech definition training module is used for establishing a speech feature pattern library and logging the speech instruction corresponding to the processed and extracted audio signal in the feature pattern library; and the speech recognition control module searches a minimum matching error to obtain a recognition result and executes the corresponding speech instruction. The technical scheme disclosed by the invention can improve the practicability of speech photographing function and can realize user personalized customization, and the interactivity between the user and the device can be improved.

User-defined instruction recognition speech photographing system

Provided are a terminal and server of a speaker-adaptation speech-recognition system and a method for operating the system. The terminal in the speaker-adaptation speech-recognition system includes a speech recorder which transmits speech data of a speaker to a speech-recognition server, a statistical variable accumulator which receives a statistical variable including acoustic statistical information about speech of the speaker from the speech-recognition server which recognizes the transmitted speech data, and accumulates the received statistical variable, a conversion parameter generator which generates a conversion parameter about the speech of the speaker using the accumulated statistical variable and transmits the generated conversion parameter to the speech-recognition server, and a result displaying user interface which receives and displays result data when the speech-recognition server recognizes the speech data of the speaker using the transmitted conversion parameter and transmits the recognized result data.

Terminal and server of speaker-adaptation speech-recognition system and method for operating the system

The present invention relates to a method for improving the recognition rate of a speech recognition system through the sampling rate conversion. The method is that: the sampling rate is normalized before the speech is recognized, so that the sampling rates of the testing speech and the training speech are consistent to reduce the mistaken recognition rate as a result of inconsistent sampling rates. Moreover, the method proposes a novel sampling rate conversion structure of a fraction sampling rate conversion. Compared with the prior art, the method can completely reserve the original frequency spectrum, and prevent partly loss of the high-frequency part of the frequency spectrum when the sampling rate is converted. Therefore, the method can effectively improve the mistaken recognition rate as a result of the inconsistent sampling rates in the isolated word recognition system of large vocabulary.

Method for speech recognition system improving discrimination by using sampling velocity conversion

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Method for speech recognition system improving discrimination by using sampling velocity conversion