Method and device for adjusting intermediate frequency point data of TV set and its audio signal
A technology of audio signal and point data, which is applied in the field of adjustment of mid-frequency point data of TV and its audio signal, which can solve the problems affecting the quality of audio signal and the inability to hear human voice clearly, and achieve the goal of improving quality, increasing energy and avoiding attenuation Effect
Active Publication Date: 2020-05-19
HISENSE VISUAL TECH CO LTD
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[0004] However, when the volume of the TV set is too high, the energy attenuation of the audio signal will cause the audio signal with less energy to be attenuated at the same time, which affects the quality of the audio signal. For example, some slight human voices in the explosion scene are due to the accompanying The attenuation of the explosion sound is attenuated at the same time, resulting in the vocal being inaudible
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[0027] Here, an exemplary embodiment will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. Rather, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.
[0028] figure 1 It is a schematic diagram showing the hardware structure of a television 100 according to an exemplary embodiment. It should be noted that the television 100 is only an example adapted to the present invention, and cannot be considered as providing any limitation on the scope of use of the present invention. The TV set 100 cannot be interpreted as being dependent on or having to...
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The invention discloses a television, and a frequency point data adjusting method and device of an audio signal thereof. The method comprises the steps of: sampling and performing time-frequency transformation to an inputted audio signal to obtain a number of frames of frequency domain data; aiming at the frequency point data in the frequency domain data of the current frame, dividing frequency band groups, so as to obtain a number of frequency band groups containing at least one frequency point data; if the average energy of a target frequency band group is less than a hearing threshold of the target frequency band group, adjusting a weighing coefficient of the target frequency band group according to an adjustment coefficient of the target frequency band group and the yield value of the frequency domain data of the current frame; and, according to the weighing coefficient, adjusting the frequency point data in the target frequency band group. The target frequency band group is one of the frequency band groups; and, the adjustment coefficient is set by a hearing equal loudness curve. The method provided by the invention prevents the minimal-energy audio signal from being simultaneously attenuated to affect the quality of the audio signal.
Description
Technical field [0001] The present invention relates to the technical field of audio signal processing, in particular to a television set and a method and device for adjusting audio signal intermediate frequency point data. Background technique [0002] With the popularity of TV sets, users have higher and higher requirements for TV sets. The consistent volume technology is an indispensable technology inside the TV. It mainly refers to reducing the range of volume changes when the sound volume of the TV changes suddenly, so that the volume of the TV is consistent. [0003] At present, the implementation of the consistent volume technology is mainly through the energy detection of the input audio signal, and the average energy calculation based on the detected energy, and then adjust the dynamic range of the audio signal by the calculated average energy, and then adjust the TV's Range of volume change. [0004] However, when the volume of the TV is too high, the audio signal is atte...
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IPC IPC(8): H04N5/60H04N5/50H04N21/439
CPCH04N5/50H04N5/60H04N21/439H04N21/4394
Inventor 邢文峰
Owner HISENSE VISUAL TECH CO LTD