Volume control method and digital television all-in-one machine utilizing same
A volume control and digital TV technology, applied in TV, color TV, color TV components and other directions, can solve the problem of automatic volume adjustment of digital TV all-in-one, achieve a good user experience, improve usability, and prevent loudness differences.
Active Publication Date: 2013-05-08
SHENZHEN TCL NEW-TECH CO LTD
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[0006] The object of the present invention is to provide a volume control method and a digital TV all-in-one using the method, aiming to solve the problem of automatic volume adjustment of the digital TV all-in-one
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[0046] The technical solution provided by the present invention is that when the user performs a channel switching operation, the system records the volume loudness value and the sound gain value of the channel before switching, and obtains the volume loudness value of the channel (the current channel) after the switching, and compares the sound before and after the channel switching The loudness value is compared, and the sound gain value of the channel after the switch needs to be adjusted according to the comparison result to achieve the volume balance before and after the channel change; in the process of the user watching the program, the system obtains the currently playing audio frame (the next audio Frame), compare the volume loudness value of the currently played audio frame with the recorded volume loudness value of the last audio frame, and determine whether the gain value of the currently played audio frame needs to be adjusted according to the comparison result to ac...
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The invention is suitable of the technical field of digital televisions and provides a volume control method and a digital television all-in-one machine utilizing the same. The method comprises the following steps of: a, receiving a channel switching command; if so, going to the step b; if not, going to the step c; b, calculating a difference value between a volume loudness value of a current channel and the volume loudness value of a channel before switching, and adjusting a sound gain value of the current channel according to the difference value; and c, calculating the difference value between the volume loudness value of a currently displaying audio frame and the volume loudness value of the previous audio frame, and adjusting the sound gain value of the currently displaying audio frame according to the difference value. The technical scheme provided in the invention ensures that the digital television all-in-one machine can automatically adjust the volume loudness difference whenthe channel is switched or a program is inter-cut, the availability of a product is enhanced, and better use experience is provided to users.
Description
Technical field [0001] The invention belongs to the technical field of digital television, and particularly relates to a volume control method and a digital television integrated machine adopting the method. Background technique [0002] At present, with the development of the TV industry, especially with the popularization of digital TV, more and more channels can be watched by TV. Because each TV station has different methods of producing programs, for example, there is no uniform standard for the volume when encoding, so when switching between different channels, the sound of the new channel will suddenly become louder after the switch, or the sound of the commercial interruption when the program is broadcast suddenly The sudden change of the sound becomes more obvious, especially in the relatively quiet period of the night, which brings some trouble to the user. [0003] For analog TV, because the magnitude of the analog sound can be judged directly from the signal amplitude, ...
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IPC IPC(8): H04N5/60
Inventor 邹建宇
Owner SHENZHEN TCL NEW-TECH CO LTD