Method for playing sound and multi-screen terminal

1. A method for playing sound, comprising:

detecting, by a multi-screen terminal, a current opening/closing angle or angles between the respective display screens; and

selecting, by the multi-screen terminal according to the detected current opening/closing angle or angles between the respective display screens, a group of prestored audio drive parameters, and outputting the group of audio drive parameters to a power amplification module of the multi-screen terminal; or,

determining whether the detected current opening/closing angle or angles between the respective display screens and the current audio drive parameters are prestored opening/closing angle or angles and audio drive parameters corresponding to an optimal sound field playing effect, respectively, and if not, giving a prompt as to whether the current opening/closing angle or angles between the respective display screens and/or the current audio drive parameters need to be adjusted;

wherein the step of selecting, by the multi-screen terminal according to the detected current opening/closing angle or angles between the respective display screens, a group of prestored audio drive parameters, and outputting the group of audio drive parameters to the power amplification module of the multi-screen terminal comprises:

selecting, by the multi-screen terminal, prestored audio drive parameters corresponding to the detected current opening/closing angle or angles between the respective display screens, and outputting the selected audio drive parameters to the power amplification module; or,

calculating, by the multi-screen terminal, similarity between the detected current opening/closing angle or angles between the respective display screens and prestored opening/closing angles between the respective display screens, and selecting the audio drive parameters corresponding to a prestored opening/closing angle or angles with the maximum similarity with the current opening/closing angle or angles, and outputting the selected audio drive parameters to the power amplification module;

wherein assuming that the prestored opening/closing angles between the respective display screens are arrays A1 to An, where n is the number of sets of correspondence relationships among the prestored opening/closing angles between the respective display screens and the sound field playing effects, and the detected current opening/closing angle or angles between the respective display screens form an array B, the step of calculating, by the multi-screen terminal, similarity between the detected current opening/closing angle or angles between the respective display screens and prestored opening/closing angles between the respective display screens comprises:

calculating differences between corresponding array elements in the array B and in each of the arrays A1-An and variance and/or weighted average of each group of differences; wherein

the smaller the calculated variance and/or weighted average of the differences between the array elements in the array B and the array elements in an array Ai, the greater the similarity between the array B and the array Ai, where i is a natural number between 1 and n.

2. The method for playing sound according to claim 1 , wherein the method further comprises:

adjusting by the multi-screen terminal, in case where the current opening/closing angle or angles between the respective display screens and/or the current audio drive parameters need to be adjusted, the current opening/closing angle or angles between the respective display screens and/or the current audio drive parameters to the prestored opening/closing angle or angles and/or audio drive parameters corresponding to the optimal sound field playing effect; or, giving, on a currently used display screen through a user interface, a prompt as to how to adjust the current opening/closing angle or angles between the respective display screens and/or the current audio drive parameters to the prestored opening/closing angle or angles and/or audio drive parameters corresponding to the optimal sound field playing effect.

3. The method for playing sound according to claim 1 , wherein the audio drive parameters comprise a filter parameter, a gain parameter and a phase parameter.

4. A non-transitory computer readable medium comprising a program stored thereon, wherein the program, when executed, causes the method of claim 1 to be implemented.

5. A multi-screen terminal, comprising a detecting circuit, a processing circuit, a power amplification circuit and a storage circuit, wherein:

the detecting circuit is configured to detect a current opening/closing angle or angles between the respective display screens, and output the detected current opening/closing angle or angles between the respective display screens to the processing circuit;

the processing circuit is configured to select, according to the detected current opening/closing angle or angles between the respective display screens, a group of audio drive parameters prestored in the storage circuit, and output the group of audio drive parameters to the power amplification circuit; or, determine whether the detected current opening/closing angle or angles between the respective display screens and the current audio drive parameters are opening/closing angle or angles and audio drive parameters prestored in the storage circuit corresponding to an optimal sound field playing effect, respectively, and if not, give a prompt as to whether the current opening/closing angle or angles between the respective display screens and/or the current audio drive parameters need to be adjusted;

the power amplification circuit is configured to output an audio according to the audio drive parameters; and

the storage circuit is configured to prestore at least one set of correspondence relationships among the opening/closing angles between the respective display screens, the sound field playing effects and the audio drive parameters;

wherein the processing circuit selecting, according to the detected current opening/closing angle or angles between the respective display screens, a group of audio drive parameters prestored in the storage circuit, and outputting the group of audio drive parameters to the power amplification circuit comprises:

selecting audio drive parameters prestored in the storage circuit corresponding to the detected current opening/closing angle or angles between the respective display screens, and outputting the selected audio drive parameters to the power amplification circuit; or,

calculating similarity between the detected current opening/closing angle or angles between the respective display screens and the opening/closing angles between the respective display screens prestored in the storage circuit, and selecting the audio drive parameters corresponding to a prestored opening/closing angle or angles with the maximum similarity with the current opening/closing angle or angles, and outputting the audio drive parameters to the power amplification circuit:

wherein assuming that the prestored opening/closing angles between the respective display screens are arrays A1 to An, where n is the number of sets of correspondence relationships among the prestored opening/closing angles between the respective display screens and the sound field playing effects, and the detected current opening/closing angle or angles between the respective display screens form an array B, the processing circuit calculating similarity between the detected current opening/closing angle or angles between the respective display screens and the opening/closing angles between the respective display screens prestored in the storage circuit comprises:

calculating differences between corresponding array elements in the array B and in each of the arrays A1-An and variance and/or weighted average of each group of differences; wherein

the smaller the variance and/or weighted average calculated from the array B and an array Ai, the greater the similarity of the array B and the array Ai, where i is a natural number between 1 and n.

6. The multi-screen terminal according to claim 5 , further comprising an adjusting circuit, wherein

the processing circuit is further configured to send a notification to the adjusting circuit in case where the current opening/closing angle or angles between the respective display screens and/or the current audio drive parameters need to be adjusted; and

the adjusting circuit is configured to adjust, after receiving the notification from the processing circuit, the current opening/closing angle or angles between the respective display screens and/or the current audio drive parameters to the prestored opening/closing angle or angles and/or audio drive parameters corresponding to the optimal sound field playing effect; or give, on a currently used display screen through a user interface, a prompt as to how to adjust the current opening/closing angle or angles between the respective display screens and/or the current audio drive parameters to the prestored opening/closing angle or angles and/or audio drive parameters corresponding to the optimal sound field playing effect.

7. The multi-screen terminal according to claim 5 , wherein the audio drive parameters comprise a filter parameter, a gain parameter and a phase parameter.

8. The multi-screen terminal according to claim 5 , wherein the detecting circuit comprises a mechanical goniometer, a magnetic goniometer or a laser goniometer.

9. The multi-screen terminal according to claim 5 , wherein

the processing circuit is configured to select, according to the detected current opening/closing angle or angles between the respective display screens and a current sound field type, a group of audio drive parameters prestored in the storage circuit, and output the group of audio drive parameters to the power amplification circuit; or, determine whether the current opening/closing angle or angles between the respective display screens, the current audio drive parameters, and the current sound field type are an opening/closing angle or angles, audio drive parameters and sound field type prestored in the storage circuit corresponding to an optimal sound field playing effect, respectively, and if not, give a prompt as to whether the current opening/closing angle or angles between the respective display screens, the current audio drive parameters and/or the current sound field type need to be adjusted.