CN111601157B - Audio output method and display device - Google Patents
Audio output method and display device Download PDFInfo
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- CN111601157B CN111601157B CN202010391637.3A CN202010391637A CN111601157B CN 111601157 B CN111601157 B CN 111601157B CN 202010391637 A CN202010391637 A CN 202010391637A CN 111601157 B CN111601157 B CN 111601157B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
Abstract
The application provides an audio output method and a display device, wherein the method can firstly acquire audio information of a film source to be played and determine a film source format of the film source to be played. If the film source to be played is a standard film source, outputting an audio signal corresponding to the film source to be played through a first sound effect processing module; if the film source to be played is a non-standard film source, the sampling rate and the sampling precision of the audio signal can be further judged. Outputting the audio signals with the sampling rate and the sampling precision equal to the preset judgment values through a second sound effect processing module; otherwise, the audio signal is output through the second sound effect processing module and the third sound effect processing module. The sound effect processing method and the sound processing device have the advantages that different sound effect processing is carried out on audio signals of various different film source formats and different sampling rates/sampling precision, so that the sound quality is improved, and sound is enabled to be presented perfectly.
Description
Technical Field
The application relates to the technical field of smart televisions, in particular to an audio output method and display equipment.
Background
The intelligent television can acquire audio-visual resources in the network through the connecting network and play the audio-visual resources. The playing effect of the audio-visual resource is different according to the type and the format of the audio-visual resource. Generally, in order to meet the playing requirements of different smart televisions, the network resource server can provide audiovisual resource files of different types or formats. For example, for a smart television with a high hardware configuration level and a good network environment, resource files in the format of BD-remux, BD-RE, BDRip, etc. with higher picture quality and/or higher sound effect quality can be provided to improve the audio visual effect.
In order to obtain a better audio-visual effect, the smart television can further process the audio signals of the resource files through a built-in effect algorithm after decoding the resource files so as to modify partial parameters in the audio signals and improve the tone quality. For example, after decoding the resource file, the dolby sound effect processing may be performed on the audio signal in the resource file, so that the played audio-visual resource obtains a dolby panoramic sound effect.
However, as the audio-visual resources in the network are various in types, the audio signals of part of the resource files have different sound quality effects obtained by processing through an effect algorithm due to the difference of sampling rates and encoding rates. For example, the audio signal of the duby atmos film source is processed by dolby sound effect, and the sound quality is improved. However, for the film sources other than the dobly atmos, the sound quality of the audio signals is not significantly improved after the dolby sound effect processing. Moreover, when a part of the film source is played, the Dolby sound effect processing can change the original audio output form and reduce the tone quality of the output audio signal.
Disclosure of Invention
The application provides an audio output method and display equipment, which are used for solving the problem that the tone quality of a traditional smart television is reduced under partial film sources.
In one aspect, the present application provides an audio output method, including:
acquiring audio information of a to-be-played film source, wherein the audio information comprises a film source format, and the film source format comprises a standard film source and a non-standard film source;
if the film source to be played is a standard film source, outputting an audio signal corresponding to the film source to be played through a first sound effect processing module;
and if the film source to be played is a non-standard film source, outputting an audio signal corresponding to the film source to be played through a second sound effect processing module.
Optionally, the audio information further includes a sampling value of the audio signal corresponding to the to-be-played film source, where the sampling value includes a sampling rate and a sampling precision, and if the to-be-played film source is a non-standard film source, the method further includes:
judging whether the sampling value is equal to a preset judgment value or not;
if the sampling value is equal to a preset judgment value, outputting the audio signal through a second sound effect processing module;
and if the sampling value is not equal to the preset judgment value, outputting the audio signal through a second sound effect processing module and a third sound effect processing module.
As can be seen from the above technical solutions, the present application provides, in a first aspect, an audio output method for outputting an audio signal of a display device. The method can firstly acquire the audio information of the film source to be played and determine the film source format of the film source to be played. If the film source to be played is a standard film source, outputting an audio signal corresponding to the film source to be played through a first sound effect processing module; if the film source to be played is a non-standard film source, the sampling rate and the sampling precision of the audio signal can be further judged. Outputting the audio signals with the sampling rate and the sampling precision equal to the preset judgment values through a second sound effect processing module; otherwise, the audio signal is output through the second sound effect processing module and the third sound effect processing module. The sound effect processing method and the sound processing device have the advantages that different sound effects are processed through the audio signals with different film source formats and different sampling rates/sampling accuracies, so that the sound quality is improved, and the sound is perfectly presented.
In another aspect, the present application also provides a display device, including: the device comprises a display, an audio output interface, a first sound effect processing module, a second sound effect processing module and a controller;
the audio output interface is used for outputting audio signals; the first sound effect processing module is configured to perform sound effect processing on the audio signal of the standard film source; the second sound effect processing module is configured to perform sound effect processing on the audio signals of the non-standard film source;
the controller is configured to perform the following program steps:
acquiring audio information of a film source to be played, wherein the audio information comprises a film source format, and the film source format comprises a standard film source and a non-standard film source;
if the source to be played is a standard source, outputting an audio signal corresponding to the source to be played through a first sound effect processing module;
and if the film source to be played is a nonstandard film source, outputting an audio signal corresponding to the film source to be played through a second sound effect processing module.
Optionally, the system further comprises a third sound effect processing module; the audio information further includes a sampling value of the audio signal corresponding to the to-be-played film source, where the sampling value includes a sampling rate and a sampling precision, and if the to-be-played film source is a non-standard film source, the controller is further configured to:
judging whether the sampling value is equal to a preset judgment value or not;
if the sampling value is equal to a preset judgment value, outputting the audio signal through a second sound effect processing module;
and if the sampling value is not equal to the preset judgment value, outputting the audio signal through a second sound effect processing module and a third sound effect processing module.
As can be seen from the above technical solutions, a second aspect of the present application provides a display device, including: the device comprises a display, an audio output interface, a first sound effect processing module, a second sound effect processing module, a third sound effect processing module and a controller. In practical application, the display can be used for presenting an interactive interface, the controller can acquire audio information of a to-be-played film source selected in the user interactive interface, judge information such as a film source format and a sampling value of the to-be-played film source, select and send an audio signal corresponding to the to-be-played film source to the first sound effect processing module, the second sound effect processing module and/or the third sound effect processing module for sound effect processing according to a judgment result, and finally output the audio signal through the audio output interface. The display equipment carries out different sound effect processing on different film source formats and different sampling rates/sampling precision, so that the sound tone quality is ensured.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments are briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flowchart of an audio output method according to the present application;
FIG. 2 is a schematic flow chart of an audio output method under a non-standard film source according to the present application;
FIG. 3 is a schematic diagram of a control flow of the sound effect processing module according to the present application;
fig. 4 is a schematic flow chart of acquiring audio information of a film source to be played according to the present application;
FIG. 5 is a schematic flow chart illustrating an audio signal output by the first sound processing module according to the present application;
FIG. 6 is a schematic flow chart of the present application illustrating the output of audio signals by a second sound processing module;
fig. 7 is a schematic structural diagram of a display device according to the present application.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
The application provides an audio output method and a display device, wherein the audio output method can be applied to the display device so as to output sound of audio-visual resources played by the display device. The display device refers to a device capable of playing audiovisual resources, such as a smart television.
It should be noted that the display device is not limited to the smart television, and may also be other devices, such as a tablet computer, a projection device, a smart display, and the like. In order to play audio-visual resources and simultaneously present video signals and audio signals, the display device needs to be internally provided with a video playing device and a sound playing device, such as a display, a loudspeaker and the like. For the output of the audio signal, an audio output interface may also be arranged on the display device, and is used to connect a sound playing device to output the audio signal, for example, a 3.5mm earphone interface, a sound interface, a wireless sound interface, and the like.
The display device may decode the audio-visual resource to obtain a video signal and an audio signal after acquiring the audio-visual resource file (or the video stream), and send the video signal and the audio signal to corresponding hardware for playing, respectively. In order to obtain a better playing effect, in the technical scheme provided by the application, a picture quality processing module and a sound effect processing module, such as a picture quality processing module for EMMC motion compensation, color correction and the like, and a sound effect processing module for Dolby panoramic sound, Eilex, Hamann Clari-FI, DTS sound effect and the like, can be further arranged in the display device. The image quality processing module and the sound effect processing module can change partial signal characteristics and playing parameters of the video signal and the audio signal, and improve the audio-visual effect.
Generally, if an audio signal is processed by a sound effect processing method, the audio signal plays a sound with a corresponding processed effect. For example, after the dap (doble) sound effect processing is performed on the audio signal, the audio signal plays the sound with dolby panoramic sound. However, due to different types of audio-visual resources, the sound effects formed after sound effect processing are different. For example, DAP sound processing is more suitable for sound processing of audio signals of Dolby Atmos film sources, and can obtain a very good Dolby panoramic sound effect, while DAP sound processing cannot improve the sound quality effect of audio signals of other film sources, and even can reduce the playing quality of such film sources.
In order to improve the output quality of audio signals under different film sources, the application provides an audio output method. Referring to fig. 1, a schematic flow chart of an audio output method according to the present application is shown. As can be seen from fig. 1, the audio output method provided by the application comprises the following steps:
s1: and acquiring audio information of a film source to be played.
The film source to be played refers to an audio-visual resource to be played by the current display device. For example, the user can select any video resource (or audio resource) to play through the interactive instruction on the control homepage. When the user selects and plays the resource file, the display device calls the corresponding resource file from the network server or the local memory. And then reading the audio information from the description information of the resource file, or analyzing the resource file, thereby determining the audio information of the film source to be played.
The audio information is information capable of reflecting the type and characteristics of a film source to be played, and comprises a film source format, sampling related parameters of a corresponding audio signal and the like. The film source format includes a standard film source and a non-standard film source. In practical application, a plurality of sound effect processing modules can be arranged in the display device, and each sound effect processing module is correspondingly provided with one or more sound effect processing algorithm programs so as to respectively carry out sound effect processing on the audio signals.
For example, the display device is internally provided with a DAP sound effect processing module, a Clari-Fi sound effect processing module, an Eilex sound effect processing module and the like. Wherein, Dolby Atmos film source suitable for DAP sound effect processing module to process sound effect is set as standard film source, and other types of film source are non-standard film source.
S2: and if the source to be played is a standard source, outputting an audio signal corresponding to the source to be played through a first sound effect processing module.
After the audio information of the film source to be played is acquired, the controller of the display device can respectively extract information such as the film source format, the sampling rate/sampling precision and the like in the audio information, so as to judge whether the film source format of the current film source to be played is a standard film source, and if the film source format is the standard film source, the corresponding audio signal is sent to the first sound effect processing module for sound effect processing.
For example, a Dolby Atmos source is set as a standard source, and the corresponding first sound-effect processing module is the DAP sound-effect processing module. If the film source format of the film source to be played is determined to be a Dolby Atmos film source through the acquired audio signal, at the moment, a DAP sound effect can be started, the corresponding audio signal is sent to a DAP sound effect processing module to be processed, and the DAP sound effect processing module can adjust partial parameters of the audio signal, so that the audio signal with the Dolby panoramic sound effect is output. And outputting the audio signal after the sound effect is adjusted through an audio output interface arranged in the display equipment so as to generate a sound signal through a loudspeaker or an external sound equipment.
S3: and if the film source to be played is a non-standard film source, outputting an audio signal corresponding to the film source to be played through a second sound effect processing module.
Similarly, after the audio information of the film source to be played is acquired, the display device judges whether the film source format of the current film source to be played is a standard film source. If the source to be played is not a standard source, namely a non-standard source, it is determined that the current source to be played is not suitable for sound effect processing through the first sound effect processing module, and the corresponding audio signal can be sent to the second sound effect processing module for sound effect processing.
In the technical scheme that this application provided, first audio processing module with need built-in different audio processing software programs or possess different tone quality processing chip among the second audio processing module to can carry out different forms's processing to audio signal.
For example, a DAP sound effect processing algorithm is built in the first sound effect processing module, and an Eilex sound effect processing algorithm is built in the second sound effect processing module. Because the Dolby Atmos film source is set as the standard film source, after the audio information of the film source to be played is obtained, if the film source to be played is judged to be not the Dolby Atmos film source, namely a nonstandard film source, the fact that the current film source to be played is possibly not suitable for sound processing through a DAP sound processing algorithm is determined, so that the Eilex sound processing module can be started, and the corresponding audio signal is sent to the Eilex sound processing module, so that the Eilex sound processing module can process the audio signal by using a method different from the DAP sound processing algorithm, and the influence of the DAP sound processing algorithm on the sound quality of the played sound is reduced.
It should be noted that, because the second sound effect processing module is mainly used for processing the audio signal corresponding to the non-standard film source, a built-in sound effect processing algorithm or processing hardware in the second sound effect processing module may be more suitable for processing the commonly used audio signal. For example, a general-purpose type algorithm program (or device) such as a noise reduction algorithm (or device), a volume enlargement/reduction algorithm (or device), etc. may be built in the second sound effect processing module to achieve the effect of improving the sound quality. And a processing algorithm aiming at a certain specific type of audio signal is not set in the second sound effect processing module, namely, the original audio quality of a film source to be played is kept for playing so as to avoid the problem of tone quality reduction.
According to the technical scheme, the audio output method can select different sound effect processing according to the film source format of the film source to be played, and can obtain the corresponding sound effect through a sound effect processing algorithm when the standard film source is played; when the non-standard film source is played, the influence of a sound effect processing algorithm on the sound playing effect can be reduced, and the problem of tone quality reduction under partial film sources is solved.
The above embodiment selects different sound effect processing modes for the film source format, and for the audio signal of the non-standard film source, can further select other forms of audio processing modes according to the audio information. That is, in some embodiments of the present application, the audio information further includes a sampling value of the audio signal corresponding to the to-be-played film source, where the sampling value refers to a sampling characteristic value when the audio signal corresponds to the sound signal and the electrical signal is converted, and includes a sampling rate, a sampling precision, and the like.
The sampling rate is also called sampling speed or sampling frequency, and refers to the number of samples extracted from a continuous signal and forming a discrete signal per second. Generally, the higher the sampling rate, the closer the generated electrical signal is to the original sound signal, and the higher the corresponding sound quality. The sampling precision is also called a code rate or a bit rate, and refers to a binary data amount per unit time after converting an analog sound signal into a digital sound signal. Also, the higher the sampling accuracy, the larger the amount of data transferred per second, and the better the corresponding sound quality.
In the technical scheme provided by the application, in order to adapt to the audio signal commonly used, the sampling value is the combination of the corresponding sampling rate and the sampling precision of the audio signal. For example, the sampling value may be 48Khz, 24bit, which represents that the audio signal sampling rate of the current to-be-played film source is 48Khz, and the sampling precision is 24 bit. Obviously, the sampling values of the audio signals corresponding to different types of audio-visual resources are different, for example, the sampling value may be 48Khz, 16 bit; 48Khz, 24 bit; 96Khz, 24bit, etc. Of course. The sampling value can be other specific numerical values, and in practical application, any combination form of sampling rate and sampling precision can be obtained according to different types of the film source to be played.
Accordingly, as shown in fig. 2, if the to-be-played film source is a non-standard film source, the method further includes the following steps:
s31: and judging whether the sampling value is equal to a preset judgment value or not.
In practical application, if the film source to be played is a non-standard film source, the sampling value data of the current film source to be played can be extracted from the audio information, so that which sound effect processing mode is more suitable for the audio signal corresponding to the current film source to be played is judged. In this embodiment, a judgment result is obtained by screening whether the current audio signal is in a manner of meeting a partial standard sampling type through a judgment value of a preset standard.
The preset judgment value can be preset according to the commonly used audio signal sampling rate and sampling precision, namely the preset judgment value comprises a plurality of preset sampling rate and sampling precision combinations. For example, the preset determination value may be 48Khz, 24 bit; 96Khz, 24 bit. When the current video source to be played is determined to be a non-standard video source, information of a sampling value corresponding to the audio signal, for example, a sampling rate of 48Khz and a sampling precision of 24 bits, may be extracted, and the sampling value is compared with a preset determination value, so as to determine whether the sampling value of the current audio signal is equal to the preset determination value.
S32: and if the sampling value is equal to a preset judgment value, outputting the audio signal through a second sound effect processing module.
If the sampling value is equal to the preset judgment value, the current to-be-played film source is suitable for sound effect processing through the second sound effect processing module, and then the corresponding audio signal is sent to the second sound effect processing module. In some embodiments of the present application, if the preset determination value includes a combination of a plurality of sampling rates and sampling accuracies, it may be determined whether the sampling value is equal to the preset determination value by comparing the sampling value with the combination of the plurality of preset sampling rates and sampling accuracies. And if the sampling rate in the sampling value of the film source to be played is equal to any one of the preset sampling rates and the sampling precision is equal to the preset sampling precision under the same combination, determining that the sampling value is equal to a preset judgment value.
For example, Eilex sound effect processing algorithm is built in the second sound effect processing module. The sampling rate of the audio signal corresponding to the current to-be-played film source is obtained by reading and is 48Khz, and the sampling precision is 24 bits. Through the comparison, the sampling value is equal to 48Khz and 24bit in the preset judgment value, the sampling value is determined to be equal to the preset judgment value, and at the moment, the corresponding audio signal can be directly sent to the second sound effect processing module to be subjected to Eilex sound effect processing.
S33: and if the sampling value is not equal to the preset judgment value, outputting the audio signal through a second sound effect processing module and a third sound effect processing module.
If the sampling value is not equal to the preset judgment value, the sampling value of the current audio signal is not a common standard value, and the audio signal can be subjected to audio processing through the second audio processing module and the third audio processing module together, so that the aim of improving the tone quality is fulfilled.
For example, the third audio processing module is internally provided with a Clari-Fi audio processing algorithm, and by reading a non-Dolby Atmos film source with a sampling rate of 48Khz and a sampling precision of 16bit, which determines that the current film source to be played corresponds to an audio signal, the current audio signal may be sent to the third audio processing module for Clari-Fi audio processing, and then the processed audio signal is sent to the second audio processing module for Eilex audio processing.
It should be noted that, the present application does not limit the processing sequence of the second sound effect processing module and the third sound effect processing module, and in practical application, different sound effect processing sequences can be set according to different sound effect processing algorithms configured inside the second sound effect processing module and the third sound effect processing module. The processing order may also be set according to the manner in which the audio signals are processed. For example, a resampling compensation algorithm for adjusting the sampling rate and the sampling precision of the audio signal is built in the third audio processing module, and standard algorithms such as the Eilex audio processing are built in the second audio processing module, so that the sampling rate and the sampling precision of the audio signal need to be converted by the third audio processing module, so that the audio signal is converted into a form in which the sampling rate and the sampling precision conform to the Eilex audio processing algorithm, and then the second audio processing module performs the Eilex audio processing.
According to the technical scheme, the audio output method can perform different sound effect processing according to different sampling rates/sampling precision, and therefore the sound can be displayed. The method can also dynamically adapt to audio signals of different film sources and different sampling characteristics, and the sound effects of different film sources are brought into play to the utmost extent.
In some embodiments of the present application, as shown in fig. 3, the method further comprises;
s320: if the sampling value is equal to a preset judgment value, closing the first sound effect processing module and the third sound effect processing module;
s330: and if the sampling value is not equal to the preset judgment value, closing the first sound effect processing module.
Further, the method further comprises:
s200: and if the film source to be played is a standard film source, closing the second sound effect processing module and the third sound effect processing module.
In practical application, in order to facilitate audio processing of audio signals through different audio processing modules, after the audio processing mode required by the audio signals is determined, the module corresponding to the audio processing mode which is not required to be performed can be closed, so that continuous audio streams are formed, and waste of computing resources in the display equipment is reduced.
For example, if the source to be played is a Dolby Atmos source, the DAP sound effect processing module is turned on, and the Clari-Fi sound effect processing module and the Eilex sound effect processing module are turned off. If the film source to be played is a non-Dolby Atmos film source, but the sampling value of the corresponding audio signal is 48Khz, 24bit or 96Khz, 24bit, the Eilex sound effect processing module is started, and the DAP sound effect processing module and the Clari-Fi sound effect processing module are closed. And if the to-be-played film source is other than the two cases, starting the Clari-Fi sound effect processing module and the Eilex sound effect processing module, and closing the DAP sound effect processing module.
In one implementation, to obtain the audio information, as shown in fig. 4, before the step of obtaining the audio information of the source to be played, the method further includes:
s101: acquiring a film source to be played;
s102: analyzing the film source to be played through a decoder;
s103: and extracting the audio information from the analysis result of the to-be-played film source.
In this embodiment, after the user selects any audio-visual resource for playing on the resource control interface through interactive operation, the controller of the display device may obtain a corresponding to-be-played film source, perform parsing through a decoder to obtain an audio signal in the to-be-played film source, and extract audio information such as a film source format, a sampling rate, and a sampling precision from a parsing result of the to-be-played film source.
For example, the user selects a movie asset and confirms playback in the asset control interface. The controller may send a resource acquisition instruction to the server after the user presses the play button (or interactive control). The server may send the selected movie resource file to the display device in response to the resource acquisition instruction. And the controller calls the decoder to analyze the received movie resource file to respectively obtain a video signal and an audio signal. And extracting the characteristic data of the audio signal, namely obtaining audio information such as a chip source format, a sampling rate and sampling precision of the audio signal for subsequent judgment.
Therefore, in practical application, the audio information can be obtained from the audio signal formed by analyzing the film source to be played, and the obtained audio information is more accurate and convenient for subsequent judgment. In addition, by analyzing the source of the to-be-played film, the sending path of the audio signal can be predetermined, so that the corresponding sound effect processing module can be called. For example, the decoder module may directly determine whether the current film source is a dolby film source, and ensure that the corresponding audio signal may be sent to the DAP sound effect processing module through a corresponding dolby channel.
In one implementation manner, as shown in fig. 5, the step of outputting the audio signal corresponding to the to-be-played film source through the first sound processing module includes:
s201: resampling the audio signal to generate a first standard signal;
s202: inputting the first standard signal into the first sound effect processing module to obtain an output result;
s203: resampling the output result to generate a second standard signal, wherein the sampling rate and/or the sampling precision of the second standard signal are/is greater than that of the first standard signal;
s204: and sending the second standard signal to an audio output interface to output sound.
In practical application, according to the audio signal sound effect processing method of the standard film source, the audio signal can be resampled first, so that the audio signal in the film source to be played is converted into the first standard signal. The first standard signal is a kind of signal that the first sound effect processing module can directly process, and can have specific sampling rate and sampling precision requirement.
After the audio signal is converted into the first standard signal, the converted signal can be input into the first sound effect processing module for sound effect processing. After the sound effect processing, the output result of the first sound effect processing module can be obtained. The corresponding output result has the sound effect of the first sound effect processing module corresponding to the sound effect algorithm.
Before the sound after the sound effect processing is output through a loudspeaker or sound equipment, the output result of the first sound effect processing module can be resampled again to generate a second standard signal. In order to further improve the sound quality, the sampling rate and/or sampling precision of the second standard signal is greater than the sampling rate and/or sampling precision of the first standard signal.
And finally, sending the second standard signal obtained by resampling to an audio output interface so as to output sound through a loudspeaker or sound equipment connected with the audio output interface, and outputting an audio signal corresponding to the to-be-played film source through a first sound effect processing module.
For example, standard slice sources of different sampling rates and sampling precisions are parsed by a decoder, and then resampling is performed on the audio information obtained by parsing, so as to obtain a first standard signal of 48Khz, 16 bits. And then outputting the second standard signal through a DAP sound effect processing module based on dobly, resampling the output result to obtain a second standard signal of 96Khz and 24bit, and finally outputting the second standard signal to an audio output interface (or a power amplifier chip) so as to output the chip source sound at a loudspeaker.
According to the technical scheme, in the embodiment, the audio signal corresponding to the standard film source can be converted into the standard signal with higher sampling rate and sampling precision through twice resampling, so that the sound effect processing effect is obtained, and the tone quality of the played film source is improved.
In one implementation manner, as shown in fig. 6, the step of outputting the audio signal corresponding to the to-be-played film source through the second sound processing module includes:
s301: inputting the audio signal into the second sound effect processing module to obtain an output result;
s302: resampling the output result to generate a second standard signal;
s303: and sending the second standard signal to an audio output interface to output sound.
For the non-standard film source, the audio signal can be directly input into the second sound effect processing module for sound effect processing, after an output result is obtained, the output result is resampled to generate a second standard signal, and finally the second standard signal is sent to the audio output interface to output the sound of the film source. Obviously, the sampling rate and/or sampling precision of the second standard signal is greater than or equal to that of the original audio signal, so as to obtain better sound quality.
For example, non-Dolby Atmos film sources with different sampling rates and sampling accuracies are analyzed by a decoder, whether the film source is a film source with preset judgment values such as 48Khz, 24bit, 96Khz, 24bit and the like is judged firstly, for the two sampling value film sources, sound effect processing can be performed through an Eilex sound effect processing module, and after an output result is obtained, a second standard signal of 96Khz and 24bit is obtained through resampling, so that the second standard signal is output to an audio output interface (or a power amplifier chip) to output film source sound.
For non-Dolby Atmos film sources with other sampling rates and sampling precision, audio signals can be sent to a Clari-Fi audio processing module and an Eilex audio processing module to be subjected to audio processing, and after Clari-Fi and Eilex audio processing, second standard signals of 96Khz and 24 bits are obtained through resampling and are output to an audio output interface (or a power amplifier chip) to be played.
Therefore, in the embodiment, after the sound effect is processed, the output result is resampled to obtain the second standard signal, so that the sampling rate and/or the sampling precision of the audio signal are/is improved, and the sound quality of the played film source is improved.
According to the technical scheme, the audio output method can be used for obtaining the audio information of the film source to be played and determining the film source format of the film source to be played. If the film source to be played is a standard film source, outputting an audio signal corresponding to the film source to be played through a first sound effect processing module; if the film source to be played is a non-standard film source, the sampling rate and the sampling precision of the audio signal can be further judged. Outputting the audio signals with the sampling rate and the sampling precision equal to the preset judgment values through a second sound effect processing module; otherwise, the audio signal is output through the second sound effect processing module and the third sound effect processing module. The sound effect processing method and the sound processing device have the advantages that different sound effect processing is carried out on audio signals of various different film source formats and different sampling rates/sampling precision, so that the sound quality is improved, and sound is enabled to be presented perfectly.
Based on the above audio output method, as shown in fig. 7, the present application further provides a display device, including: the device comprises a display, an audio output interface, a first sound effect processing module, a second sound effect processing module and a controller.
The display is used for presenting a playing picture and controlling a homepage. The audio output interface is used for outputting audio signals. The first sound effect processing module is configured to perform sound effect processing on the audio signal of the standard film source; the second sound effect processing module is configured to perform sound effect processing on the audio signals of the non-standard film source.
As shown in fig. 1, the controller is configured to perform the following program steps:
s1: acquiring audio information of a to-be-played film source, wherein the audio information comprises a film source format, and the film source format comprises a standard film source and a non-standard film source;
s2: if the source to be played is a standard source, outputting an audio signal corresponding to the source to be played through a first sound effect processing module;
s3: and if the film source to be played is a nonstandard film source, outputting an audio signal corresponding to the film source to be played through a second sound effect processing module.
In some embodiments of the present application, the display device further includes a third sound effect processing module; the audio information further includes a sampling value of the audio signal corresponding to the to-be-played film source, where the sampling value includes a sampling rate and a sampling precision, and if the to-be-played film source is a non-standard film source, as shown in fig. 2, the controller is further configured to:
s31: judging whether the sampling value is equal to a preset judgment value or not;
s32: if the sampling value is equal to a preset judgment value, outputting the audio signal through a second sound effect processing module;
s33: and if the sampling value is not equal to the preset judgment value, outputting the audio signal through a second sound effect processing module and a third sound effect processing module.
As can be seen from the above technical solutions, the display device provided in the present application includes: the device comprises a display, an audio output interface, a first sound effect processing module, a second sound effect processing module, a third sound effect processing module and a controller. In practical application, the display can be used for presenting an interactive interface, the controller can acquire audio information of a to-be-played film source selected in the user interactive interface, judge information such as a film source format and a sampling value of the to-be-played film source, select to send an audio signal corresponding to the to-be-played film source to the first sound effect processing module, the second sound effect processing module and/or the third sound effect processing module according to a judgment result to perform sound effect processing, and finally output the audio signal through the audio output interface. The display equipment carries out different sound effect processing on different film source formats and different sampling rates/sampling precision, so that the sound tone quality is ensured.
In a specific implementation, the present application further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments of the method provided in the present application when executed, and when the controller of the display device provided in the present application runs the computer program instructions, the controller executes the steps in which the controller is configured. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).
Those skilled in the art will clearly understand that the techniques in the embodiments of the present application may be implemented by way of software plus a required general hardware platform. Based on such understanding, the technical solutions in the embodiments of the present application may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present application.
The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, for the embodiments, since they are substantially similar to the method embodiments, the description is simple, and the relevant points can be referred to the description in the method embodiments.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (8)
1. An audio output method, comprising:
acquiring audio information of a to-be-played film source, wherein the audio information comprises a film source format and a sampling value of an audio signal corresponding to the to-be-played film source, the sampling value comprises a sampling rate and a sampling precision, and the film source format comprises a standard film source and a non-standard film source;
if the source to be played is a standard source, outputting an audio signal corresponding to the source to be played through a first sound effect processing module;
if the film source to be played is a non-standard film source, judging whether the sampling value is equal to a preset judgment value or not; if the sampling value is equal to a preset judgment value, outputting an audio signal corresponding to the film source to be played through a second sound effect processing module; if the sampling value is not equal to the preset judgment value, outputting the audio signal through a second sound effect processing module and a third sound effect processing module; the third sound effect processing module is internally provided with a resampling compensation algorithm for adjusting the sampling rate and the sampling precision of the audio signal, and the second sound effect processing module is internally provided with a sound effect processing standard algorithm.
2. The audio output method of claim 1, further comprising;
if the sampling value is equal to a preset judgment value, closing the first sound effect processing module and the third sound effect processing module;
and if the sampling value is not equal to the preset judgment value, closing the first sound effect processing module.
3. The audio output method of claim 2, further comprising:
and if the film source to be played is a standard film source, closing the second sound effect processing module and the third sound effect processing module.
4. The audio output method according to claim 1 or 2, wherein the preset determination value includes a plurality of preset sampling rate and sampling precision combinations, the method further comprising:
comparing the sampling value with a plurality of preset sampling rate and sampling precision combinations;
and if the sampling value is equal to any combination of the preset sampling rate and the sampling precision, determining that the sampling value is equal to a preset judgment value.
5. The audio output method of claim 1, further comprising:
acquiring a film source to be played;
analyzing the film source to be played through a decoder;
and extracting the audio information from the analysis result of the to-be-played film source.
6. The audio output method of claim 1, wherein the step of outputting the audio signal corresponding to the source to be played through the first sound effect processing module comprises:
resampling the audio signal to generate a first standard signal;
inputting the first standard signal into the first sound effect processing module to obtain an output result;
resampling the output result to generate a second standard signal, wherein the sampling rate and/or the sampling precision of the second standard signal are/is greater than that of the first standard signal;
and sending the second standard signal to an audio output interface to output sound.
7. The audio output method according to claim 6, wherein the step of outputting the audio signal corresponding to the source to be played through a second sound effect processing module comprises:
inputting the audio signal into the second sound effect processing module to obtain an output result;
resampling the output result to generate a second standard signal;
and sending the second standard signal to an audio output interface to output sound.
8. A display device, comprising:
a display;
an audio output interface for outputting an audio signal;
the first sound effect processing module is configured to perform sound effect processing on the audio signal of the standard film source;
the second sound effect processing module is configured to perform sound effect processing on the audio signal of the non-standard film source;
a controller configured to:
acquiring audio information of a to-be-played film source, wherein the audio information comprises a film source format and a sampling value of an audio signal corresponding to the to-be-played film source, the sampling value comprises a sampling rate and a sampling precision, and the film source format comprises a standard film source and a non-standard film source;
if the film source to be played is a standard film source, outputting an audio signal corresponding to the film source to be played through a first sound effect processing module;
if the film source to be played is a non-standard film source, judging whether the sampling value is equal to a preset judgment value or not; if the sampling value is equal to a preset judgment value, outputting an audio signal corresponding to the film source to be played through a second sound effect processing module; if the sampling value is not equal to the preset judgment value, outputting the audio signal through a second sound effect processing module and a third sound effect processing module; the third sound effect processing module is internally provided with a resampling compensation algorithm for adjusting the sampling rate and the sampling precision of the audio signal, and the second sound effect processing module is internally provided with a sound effect processing standard algorithm.
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