38results about How to "Speech recognition is accurate" patented technology

This invention relates to a method for identifying phones with limited spheres automatically including: A1, setting up the corresponding relation between the phone files and label information in a limited set, plugging the label information in the phone files or replacing the phone information in the file with the label information to be sent by the transmitting end, A2, the receiving end receives the modified phone files, picks up effective label information and searches the corresponding phone information based on the effective label information.

The invention provides a smart home voice control system based on Bluetooth transmission, which is used for realizing voice control between a mobile phone terminal and a smart home electrical appliance. Because a mobile terminal adopts a Bluetooth transmission technology, the mobile terminal is more suitable for a local area network (LAN) in the smart home, thus greatly prolonging the distance of the voice control; and noises in the voice transmitted by the Bluetooth can be extremely eliminated from a pronunciation end, thus a transmitted voice command is more easy to identify and analyze. The system comprises a smart mobile phone terminal and a central control device, wherein the smart mobile terminal comprises a Bluetooth device and a voice input device, and is used for voice collection and Bluetooth transmission of a front end; and the central control device comprises a Bluetooth device, and is used for receiving voice data sent by the smart mobile terminal via the Bluetooth, analyzing the voice data, and sending target control signals to a controller end. A user can control the home electrical appliance by inputting a voice command in the smart mobile terminal, thus realizing a function that the mobile terminal is used to control the home electrical appliance in a short distance, and reaching the purpose of home intelligentization.

The invention provides a voice data processing method and apparatus of a mobile terminal. The method includes: acquiring voice data input by users; recognizing the voice data; obtaining a keyboard corresponding to the voice data and identification information of a controlled electronic device according to a recognition result, and performing classification according to goals of the users in the voice data; searching a first historical voice control event matched with the keyboard and a classification result from historical voice control events, wherein an execution result of the controlled electronic device corresponding to the first historical voice control event is execution success; and obtaining a corresponding historical control instruction from the first historical voice control event, and sending the historical control instruction to the controlled electronic device corresponding to the identification information to control the controlled electronic device to execute an operation corresponding to the historical control instruction. By employing the above scheme, the speech recognition performance can be enhanced.

The present invention is a voice system suitable for portable smart devices and its use method, including a main control module, a wake-up module, a sound receiving module, a distance sensing module, a gesture trajectory recognition module, a knocking module and a key displayed on the screen The voice button, the sound receiving module, the distance sensing module, the gesture trajectory recognition module, the knocking module and the wake-up module are all connected to the main control module, and the distance sensing module is arranged near the sound receiving module. The using methods of the system include hardware sensing using methods, software one-button using methods, track recognition using methods and knocking using methods. The advantages of the present invention are: multiple sensors are provided, the voice system can be used in various ways, and it can be used in different occasions; different usage methods can be used together to make the voice system more simple and convenient to use; there is a chat voice system The recognition and semantic speech recognition make the speech recognition more accurate.

The invention provides a voice enhancement method, device, smart speaker, and smart TV. In the voice enhancement method, the microphone array arranged on the smart speaker first picks up the original sound of music played by the speaker and the human voice produced by people talking, and converts it into multiple voices through an ADC. Then the FPGA converts the multi-channel digital signal into a digital signal, and sends it to the CPU, and the CPU obtains a reference signal for echo cancellation from the digital signal, and finally uses the AEC algorithm based on the reference signal. The reference signal cancels the original music signal picked up by the microphone array, and outputs voice data. The invention directly extracts the signal from the microphone array as the reference signal for echo cancellation without modifying the circuit of the sound box, ensures the integrity of the sound box, accurate speech recognition, strong output audio signal and high power.

The invention discloses an echo cancellation method used in a voice recognition process, comprising the following steps: a microphone is used to receive the sound of a near-end user and a far-end speaker, and form a first analog signal, and the first analog signal passes through an AD converter It will be converted into a digital signal, and the digital signal will be processed by multiple echo cancellation modules such as the voice state detection module, filter control module, adaptive filter, echo cancellation module, error calibration module, residual echo interception module, and second nonlinear processing module. After that, send to the speakers. The present invention can effectively eliminate the echo collected by the microphone, thereby ensuring the accuracy of speech during speech recognition, thereby improving the accuracy of speech recognition, effectively solving the defect of eliminating noise in the digital domain in the prior art, and improving echo The quality of the cancellation enables accurate speech recognition without sound cavity for efficient isolation and without reducing the volume of the prompt tone.