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Volume adjustment method and device

An adjustment method and volume technology, applied in the direction of the branch office voice amplifier, etc., can solve the problems of deviation and poor volume adjustment effect, and achieve the effect of improving the volume adjustment.

Active Publication Date: 2017-02-08
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The strength of the sound is called the loudness of the sound. Because the voice of the caller is not the same, even at the same level of volume, the loudness of the sound heard by the human ear will be different, and the existing technology is only determined by adjusting physical parameters. Therefore, there will be a certain deviation between the actual loudness of the sound after the volume is adjusted through the existing technology and the loudness of the subjective perception of the human ear, resulting in the adjustment effect of the volume. bad

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  • Volume adjustment method and device

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Experimental program
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Embodiment 1

[0046] This embodiment provides a volume adjustment method, see figure 1 , the method flow provided by this embodiment is specifically as follows:

[0047] 101: Obtain the perceived loudness index of the first sound segment and the second sound segment in a call at any level of volume, the first sound segment is the sound segment before the second sound segment, and the perceived loudness index is determined by the volume of different frequencies in the sound spectrum It is obtained by performing weighted integration according to its corresponding preset weighting coefficient;

[0048] Wherein, the first sound segment is the previous sound segment adjacent to the second sound segment;

[0049] Obtain the perceived loudness index of the first sound segment and the second sound segment in a call at any level of volume, including but not limited to:

[0050] Acquiring the perceived loudness index of the previous sound segment adjacent to the second sound segment and the perceiv...

Embodiment 2

[0064] Embodiment two

[0065] For sounds in various environments, due to individual differences, each person has different sensitivities to sounds of different frequencies. figure 2 The audible range of the human ear is illustrated in the shown human hearing characteristic curve. combine figure 2 It can be seen from the human auditory characteristic curve shown that in the auditory response area, the sound pressure levels corresponding to different frequencies are different. However, for different sound pressure levels corresponding to different frequencies, the sound loudness perceived by the human ear sometimes has the same situation, such as image 3 The equal loudness curve shown. The number marked on each curve in the equal loudness curve is the unit of loudness, which shows the relationship between sound pressure level and frequency under equal loudness conditions. It can be known from the equal loudness curve that when the volume is small , the human ear feels in...

Embodiment 3

[0087] This embodiment provides a volume adjustment device, which is used to implement the volume adjustment method provided in the first or second embodiment above. see Figure 5 , the device consists of:

[0088] Obtaining module 51, is used for obtaining the perceived loudness index of the first sound segment and the second sound segment in the call at any level of volume, the first sound segment is the sound segment before the second sound segment, and the perceived loudness index is obtained from the sound spectrum The volume of different frequencies is obtained by weighted integration according to their corresponding preset weighting coefficients;

[0089] A determination module 52, configured to determine the volume adjustment coefficient of the second sound segment according to the perceived loudness index of the first sound segment and the second sound segment acquired by the acquisition module 51;

[0090] The adjustment module 53 is configured to adjust the volume...

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Abstract

The invention discloses a volume adjusting method and apparatus, and belongs to the technical field of audio processing. The method comprises: obtaining the perception loudness indicators of a first voice segment and a second voice segment in a conversation under an any-grade volume, wherein the first voice segment is a sound segment before the second sound segment, and the perception loudness indicators are obtained by weight integration according to a preset weight coefficient by volume with different frequencies in a voice spectrum; and according to the perception loudness indicators of the first voice segment and the second voice segment, determining the volume adjusting coefficient of the second voice segment, and adjusting the volume of the second voice segment according to the determined volume adjusting coefficient. According to the invention, the volume adjusting coefficient of the second voice segment is determined according to the perception loudness indicators of the first voice segment and the second voice segment obtained under the any-grade volume, and the volume of the second voice segment is adjusted accordingly, such that the volume is adjusted according to loudness, the adjusted actual loudness reaches a balance with the human ear perception loudness, and the volume adjusting effect is improved.

Description

technical field [0001] The invention relates to the technical field of audio processing, in particular to a volume adjustment method and device. Background technique [0002] With the continuous advancement of audio processing technology, there are more and more types of voice equipment using audio processing technology. No matter what kind of voice equipment, in order to bring users a good auditory experience , It is often necessary to adjust the volume of the call. [0003] When adjusting the volume in the prior art, the method of adaptive volume adjustment is generally adopted. In this method, the volume adjustment coefficient is determined by adjusting the physical parameters such as the amplitude and frequency of the sound, and the volume adjustment coefficient of each segment of the call is adjusted according to the volume adjustment coefficient. The volume is adjusted uniformly. [0004] In the process of realizing the present invention, the inventor finds that ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/60
Inventor 沈军
Owner LENOVO (BEIJING) LTD
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