Abstract: Embodiments of the disclosure provide a method and apparatus for encrypting and decrypting data. The method for encrypting data in a computer system can include: receiving, by a memory operation module, a first data and a second data for encryption; determining at least one storage area for a first encrypted data corresponding to the first data and a second encrypted data corresponding to the second data; generating at least one key based on the first and second data and the at least one storage area; and encrypting the first data and the second data using the at least one key to generate the first encrypted data and the second encrypted, respectively.

Abstract: Disclosed are an accent detection method, an accent detection device and a non-transitory storage medium. The accent detection method includes: obtaining audio data of a word; extracting a prosodic feature of the audio data to obtain a prosodic feature vector; generating a spectrogram based on the audio data to obtain a speech spectrum feature matrix; performing a concatenate operation on the prosodic feature vector and the speech spectrum feature matrix to obtain a first feature matrix, and performing a redundancy removal operation on the first feature matrix to obtain a second feature matrix; and classifying the second feature matrix by a classifier to obtain an accent detection result of the audio data.

Abstract: Disclosed are an accent detection method, an accent detection device and a non-transitory storage medium. The accent detection method includes: obtaining audio data of a word; extracting a prosodic feature of the audio data to obtain a prosodic feature vector; generating a spectrogram based on the audio data to obtain a speech spectrum feature matrix; performing a concatenate operation on the prosodic feature vector and the speech spectrum feature matrix to obtain a first feature matrix, and performing a redundancy removal operation on the first feature matrix to obtain a second feature matrix; and classifying the second feature matrix by a classifier to obtain an accent detection result of the audio data.

Abstract: Embodiments of the disclosure provide a method and apparatus for encrypting and decrypting data. The method for encrypting data in a computer system can include: receiving, by a memory operation module, a first data and a second data for encryption; determining at least one storage area for a first encrypted data corresponding to the first data and a second encrypted data corresponding to the second data; generating at least one key based on the first and second data and the at least one storage area; and encrypting the first data and the second data using the at least one key to generate the first encrypted data and the second encrypted, respectively.

Abstract: A multifunctional energy-saving system for vehicles is composed of an automatic clutch mechanism (1) and a control mechanism (2). The automatic clutch mechanism mainly comprises a shaft (4) with a regular prismatic section (5), a hub (6) and a synchronous cage (10) with torque-transmitting elements (12). When the speed of the shaft is higher than that of the hub torque is transmitted between them through the torque-transmitting elements (12). When the speed of the shaft becomes lower than that of the hub, no torque is transmitted between them. The shaft can be engaged with the hub as required at any time responding to the control mechanism. The energy consumption can be considerably reduced with the present system. When the automatic clutch mechanism having a symmetric structure is used in the system and disposed in place of the original differential of a vehicle, the automatic clutch mechanism can further function as a differential with anti-slip capabilities.