CN103945301A - Audio system balance adjustment method and device - Google Patents
Audio system balance adjustment method and device Download PDFInfo
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- CN103945301A CN103945301A CN201410169625.0A CN201410169625A CN103945301A CN 103945301 A CN103945301 A CN 103945301A CN 201410169625 A CN201410169625 A CN 201410169625A CN 103945301 A CN103945301 A CN 103945301A
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Abstract
The invention belongs to the technical field of audio systems, and particularly relates to an audio system balance adjustment method and device. The position of the best balance point of an audio system is calculated according to coordinates of audience positions, and the distances between all voice boxes and the best balance point position are calculated according to the positions of all the voice boxes; the standard distance is calculated according to the distances between all the voice boxes and the best balance point position, and finally according to the distances between all the voice boxes and the best balance point position, the standard distance, volume change rate parameters based on the distances and delay change rate parameters based on the distances, the volume and delay time of all the voice boxes are adjusted. Due to the fact that sound channel balance of the audio system is automatically adjusted according to the positions of audiences and positions of all the voice boxes, the balance adjusting effect is effectively improved, manual adjustment is not needed, and operation is simple.
Description
Technical field
The invention belongs to sound system technical field, relate in particular to a kind of sound system balance adjusting method and device.
Background technology
The multi-channel audio system of most is being all to rely on user's self sense of hearing skill to judge whether balance of sound channel aspect each channel balance adjusting, but also must regulate by manual method.Obviously such control method is wasted time and energy, and is confined to user's self hearing ability, and even having many consumers is all cannot carry out the adjusting of channel balance well and can not obtain due sound equipment counterbalance effect.
In addition, in the use of sound system, the randomness of each track loudspeaker box position and the randomness of listener position all inevitably can cause audience not receive best sound equipment counterbalance effect, greatly reduce user's experience.If audience wants to carry out the adjusting of sound equipment counterbalance effect, must regulate separately each audio amplifier, complex operation, and also whole regulating effect is also unsatisfactory.
Summary of the invention
The object of the present invention is to provide a kind of sound system balance adjusting method, be intended to solve existing sound system balance adjustment complex operation, the not so good problem of regulating effect.
The present invention is achieved in that a kind of sound system balance adjusting method, comprising:
According to listener position coordinate, calculate the optimal balance point position of sound system;
According to the position coordinates of each audio amplifier, calculate described each audio amplifier to the distance of described optimal balance point position;
According to described each audio amplifier, to the distance of described optimal balance point position, calculate reference range;
According to described each audio amplifier, to the distance of described optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance, each audio amplifier is carried out to the adjusting of volume and time of delay.
The present invention also provides a kind of sound system balance regulator, comprising:
The first computing module, the second computing module, the 3rd computing module and adjustment module;
Described the first computing module, for calculating the optimal balance point position of sound system according to listener position coordinate;
Described the second computing module, for calculating described each audio amplifier to the distance of described optimal balance point position according to the position coordinates of each audio amplifier;
Described the 3rd computing module, for calculating reference range according to described each audio amplifier to the distance of described optimal balance point position;
Described adjustment module, for carrying out the adjusting of volume and time of delay according to described each audio amplifier to the distance of described optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance to each audio amplifier.
In the present invention, according to listener position coordinate, calculate the optimal balance point position of sound system, then according to the position coordinates of each audio amplifier, calculate each audio amplifier to the distance of optimal balance point position; According to each audio amplifier, to the distance of described optimal balance point position, calculate reference range again, finally according to described each audio amplifier, to the distance of described optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance, each audio amplifier is carried out to the adjusting of volume and time of delay.Because being carries out the channel balance adjusting of sound system automatically according to the position of audience's position and each audio amplifier, effectively improved balance adjustment effect, and do not needed to regulate manually, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the sound system balance adjusting method that provides of the embodiment of the present invention;
Fig. 2 is the sound system balance adjusting method one application scenarios schematic diagram that the embodiment of the present invention provides.
Fig. 3 is the structured flowchart of the sound system balance regulator that provides of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows the realization flow of a kind of sound system balance adjusting method that the embodiment of the present invention provides, and details are as follows:
Step 101, the optimal balance point position of calculating sound system according to listener position coordinate.
In the embodiment of the present invention, first according to listener position coordinate, calculate the geometric center point of listener position, the optimal balance point position using geometric center point as sound system, specific formula for calculation is:
wherein
the optimal balance point position x axle, the y axial coordinate value that represent respectively sound system, Lx
i, Ly
irepresent respectively i listener position x axle, y axial coordinate value, N represents total number of listener position.Wherein, above-mentioned x axle, y axle can be x, the y axis coordinate system that the origin of coordinates forms for ground, room any point.
Step 102, according to the position coordinates of each audio amplifier, calculate each audio amplifier to the distance of above-mentioned optimal balance point position.
In the embodiment of the present invention, preferred, according to the position coordinates of each audio amplifier, calculate each audio amplifier to the distance of above-mentioned optimal balance point position, specific formula for calculation is:
wherein, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
the optimal balance point position x axle, the y axial coordinate value that represent respectively sound system, Sx
j, Sy
jrepresent respectively j audio amplifier x axle, y axial coordinate value, 1≤j≤M, wherein, M represents total audio amplifier number.
Step 103, the distance calculating reference range according to each audio amplifier to optimal balance point position.
In the embodiment of the present invention, preferred, according to each audio amplifier, to the distance of above-mentioned optimal balance point position, calculate reference range, specific formula for calculation is:
wherein,
represent reference range, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position, M represents total audio amplifier number.
Step 104, according to each audio amplifier, to the distance of optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance, each audio amplifier is carried out to the adjusting of volume and time of delay.
In the embodiment of the present invention, according to each audio amplifier, to the distance of optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance, each audio amplifier is carried out to the adjusting of volume and time of delay, be specially: according to each audio amplifier, to distance, reference range and the volume change rate parameter based on distance of optimal balance point position, each audio amplifier is carried out to volume adjusting, specifically regulate formula to be:
wherein,
represent j the volume after audio amplifier balance adjustment,
represent j the volume before audio amplifier balance adjustment, α represents the volume change rate parameter based on distance, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
represent reference range;
According to described each audio amplifier, to distance, reference range and the Change ratio of delay parameter based on distance of described optimal balance point position, each audio amplifier is carried out to adjusting time of delay, specifically regulates formula to be:
wherein,
represent the time of delay after output audio signal after j audio amplifier balance adjustment,
represent the time of delay after the front output audio signal of j audio amplifier balance adjustment, β represents the Change ratio of delay parameter based on distance, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
represent reference range.
Above-mentioned volume change rate parameter alpha and the Change ratio of delay parameter beta based on distance based on distance is preset parameter, can set according to concrete sound system.Volume change rate parameter alpha based on distance is volume increase and decrease amount and ratio apart from increase and decrease amount, and the Change ratio of delay parameter beta based on distance is for postponing increase and decrease amount and ratio apart from increase and decrease amount.
In order better to understand the present embodiment, below by a concrete application scenarios, the present embodiment is described:
Referring to Fig. 2, Fig. 2 is a certain home theater sound equipment system schematic, and this home theater has 3 listener position L1, L2 and L3, and coordinate is respectively (Lx
1, Ly
1), (Lx
2, Ly
2) and (Lx
3, Ly
3), and 5 audio amplifier S1, S2, S3, S4 and S5, coordinate is respectively (Sx
1, Sy
1), (Sx
2, Sy
2), (Sx
3, Sy
3), (Sx
4, Sy
4) and (Sx
5, Sy
5), this coordinate system, x axle, y axis coordinate system that the home theater ground central point of take forms as the origin of coordinates.First according to formula:
calculate the optimal balance point position of sound system, now, N=3.Then according to formula:
calculate 5 audio amplifiers to the distance of above-mentioned optimal balance point position, afterwards according to formula
calculate reference range, M=5 now, finally again according to formula
respectively the volume of 5 audio amplifiers and time of delay are regulated.
The embodiment of the present invention, the channel balance that automatically carries out sound system according to the position of audience's position and each audio amplifier regulates, and does not need to regulate manually, easy and simple to handle, and has effectively improved balance adjustment effect.
Fig. 3 shows the structured flowchart of a kind of sound system balance regulator that the embodiment of the present invention provides, this sound system balance regulator can be realized the described method of preceding method embodiment, for convenience of explanation, only show the part relevant to the embodiment of the present invention.With reference to Fig. 3, this sound system balance regulator, comprising: the first computing module 31, the second computing module 32, the 3rd computing module 33 and adjustment module 34.
The first computing module 31, for calculating the optimal balance point position of sound system according to listener position coordinate.Further, the first computing module calculates the optimal balance point position of sound system according to listener position coordinate, and specific formula for calculation is:
wherein
the optimal balance point position x axle, the y axial coordinate value that represent respectively sound system, Lx
i, Ly
irepresent respectively i listener position x axle, y axial coordinate value, N represents total number of listener position.
The second computing module 32, for calculating described each audio amplifier to the distance of described optimal balance point position according to the position coordinates of each audio amplifier.The second computing module calculates described each audio amplifier to the distance of described optimal balance point position according to the position coordinates of each audio amplifier, and specific formula for calculation is:
wherein, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
the optimal balance point position x axle, the y axial coordinate value that represent respectively sound system, Sx
j, Sy
jrepresent respectively j audio amplifier x axle, y axial coordinate value, 1≤j≤M, wherein, M represents total audio amplifier number.The 3rd computing module 33, for calculating reference range according to described each audio amplifier to the distance of described optimal balance point position.The 3rd computing module is for calculating reference range according to described each audio amplifier to the distance of described optimal balance point position, and specific formula for calculation is:
wherein,
represent reference range, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position, M represents total audio amplifier number.
Adjustment module 34, for carrying out the adjusting of volume and time of delay according to described each audio amplifier to the distance of described optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance to each audio amplifier.Further, adjustment module 34 also comprises: first regulates submodule 341 and second to regulate submodule 342.First regulates submodule 341, for each audio amplifier being carried out to volume adjusting according to described each audio amplifier to distance, reference range and the volume change rate parameter based on distance of described optimal balance point position, specifically regulates formula to be:
wherein,
represent j the volume after audio amplifier balance adjustment,
represent j the volume before audio amplifier balance adjustment, α represents the volume change rate parameter based on distance, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
represent reference range.Second regulates submodule 342, for each audio amplifier being carried out to adjusting time of delay according to described each audio amplifier to distance, reference range and the Change ratio of delay parameter based on distance of described optimal balance point position, specifically regulates formula to be:
wherein,
represent the time of delay after output audio signal after j audio amplifier balance adjustment,
represent the time of delay after the front output audio signal of j audio amplifier balance adjustment, β represents the Change ratio of delay parameter based on distance, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
represent reference range.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only the division with above-mentioned each functional unit, module is illustrated, in practical application, can above-mentioned functions be distributed and by different functional units, module, completed as required, the internal structure that is described device is divided into different functional units or module, to complete all or part of function described above.Each functional unit in embodiment or module can be integrated in a processing unit, also can be that the independent physics of unit exists, also can be integrated in a unit two or more unit, above-mentioned integrated unit or module both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.In addition, the concrete title of each functional unit, module also, just for the ease of mutual differentiation, is not limited to the application's protection range.The specific works process of unit, module in said apparatus, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.
Those of ordinary skills it is also understood that, the all or part of step realizing in above-described embodiment method is to come the hardware that instruction is relevant to complete by program, described program can be in being stored in a computer read/write memory medium, described storage medium, comprises ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a sound system balance adjusting method, is characterized in that, comprising:
According to listener position coordinate, calculate the optimal balance point position of sound system;
According to the position coordinates of each audio amplifier, calculate described each audio amplifier to the distance of described optimal balance point position;
According to described each audio amplifier, to the distance of described optimal balance point position, calculate reference range;
According to described each audio amplifier, to the distance of described optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance, each audio amplifier is carried out to the adjusting of volume and time of delay.
2. the method for claim 1, is characterized in that, described optimal balance point position of calculating sound system according to listener position coordinate, and specific formula for calculation is:
wherein
the optimal balance point position x axle, the y axial coordinate value that represent respectively sound system, Lx
i, Ly
irepresent respectively i listener position x axle, y axial coordinate value, N represents total number of listener position.
3. the method for claim 1, is characterized in that, the described position coordinates according to each audio amplifier calculates described each audio amplifier to the distance of described optimal balance point position, and specific formula for calculation is:
wherein, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
the optimal balance point position x axle, the y axial coordinate value that represent respectively sound system, Sx
j, Sy
jrepresent respectively j audio amplifier x axle, y axial coordinate value, 1≤j≤M, wherein, M represents total audio amplifier number.
4. the method for claim 1, is characterized in that, each audio amplifier calculates reference range to the distance of described optimal balance point position described in described basis, and specific formula for calculation is:
wherein,
represent reference range, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position, M represents total audio amplifier number.
5. the method as described in one of claim 1-4, it is characterized in that, described in described basis, each audio amplifier carries out the adjusting of volume and time of delay to the distance of described optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance to each audio amplifier, is specially:
According to described each audio amplifier, to distance, reference range and the volume change rate parameter based on distance of described optimal balance point position, each audio amplifier is carried out to volume adjusting, specifically regulates formula to be:
wherein,
represent j the volume after audio amplifier balance adjustment,
represent j the volume before audio amplifier balance adjustment, α represents the volume change rate parameter based on distance, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
represent reference range;
According to described each audio amplifier, to distance, reference range and the Change ratio of delay parameter based on distance of described optimal balance point position, each audio amplifier is carried out to adjusting time of delay, specifically regulates formula to be:
wherein,
represent the time of delay after output audio signal after j audio amplifier balance adjustment,
represent the time of delay after the front output audio signal of j audio amplifier balance adjustment, β represents the Change ratio of delay parameter based on distance, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
represent reference range.
6. a sound system balance regulator, is characterized in that, comprising:
The first computing module, the second computing module, the 3rd computing module and adjustment module;
Described the first computing module, for calculating the optimal balance point position of sound system according to listener position coordinate;
Described the second computing module, for calculating described each audio amplifier to the distance of described optimal balance point position according to the position coordinates of each audio amplifier;
Described the 3rd computing module, for calculating reference range according to described each audio amplifier to the distance of described optimal balance point position;
Described adjustment module, for carrying out the adjusting of volume and time of delay according to described each audio amplifier to the distance of described optimal balance point position, reference range, volume change rate parameter and the Change ratio of delay parameter based on distance based on distance to each audio amplifier.
7. device as claimed in claim 6, is characterized in that, described the first computing module is for calculating the optimal balance point position of sound system according to listener position coordinate, and specific formula for calculation is:
wherein
the optimal balance point position x axle, the y axial coordinate value that represent respectively sound system, Lx
i, Ly
irepresent respectively i listener position x axle, y axial coordinate value, N represents total number of listener position.
8. device as claimed in claim 6, is characterized in that, described the second computing module is for calculating described each audio amplifier to the distance of described optimal balance point position according to the position coordinates of each audio amplifier, and specific formula for calculation is:
wherein, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
the optimal balance point position x axle, the y axial coordinate value that represent respectively sound system, Sx
j, Sy
jrepresent respectively j audio amplifier x axle, y axial coordinate value, 1≤j≤M, wherein, M represents total audio amplifier number.
9. device as claimed in claim 6, is characterized in that, described the 3rd computing module is for calculating reference range according to described each audio amplifier to the distance of described optimal balance point position, and specific formula for calculation is:
wherein,
represent reference range, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position, M represents total audio amplifier number.
10. the device as described in one of claim 6-9, is characterized in that, described adjustment module also comprises: first regulates submodule and second to regulate submodule;
Described first regulates submodule, for each audio amplifier being carried out to volume adjusting according to described each audio amplifier to distance, reference range and the volume change rate parameter based on distance of described optimal balance point position, specifically regulates formula to be:
wherein,
represent j the volume after audio amplifier balance adjustment,
represent j the volume before audio amplifier balance adjustment, α represents the volume change rate parameter based on distance, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
represent reference range;
Described second regulates submodule, for each audio amplifier being carried out to adjusting time of delay according to described each audio amplifier to distance, reference range and the Change ratio of delay parameter based on distance of described optimal balance point position, specifically regulates formula to be:
wherein,
represent the time of delay after output audio signal after j audio amplifier balance adjustment,
represent the time of delay after the front output audio signal of j audio amplifier balance adjustment, β represents the Change ratio of delay parameter based on distance, d
jrepresent that j audio amplifier is to the distance of described optimal balance point position,
represent reference range.
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| CN105307077A (en) * | 2015-10-20 | 2016-02-03 | 刘亮 | Sound box volume intelligent adjustment method based on distance information and sound box |
| CN106303806A (en) * | 2016-09-22 | 2017-01-04 | 北京小米移动软件有限公司 | The volume balance control method of sound system and device |
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| CN111601219A (en) * | 2020-06-01 | 2020-08-28 | 峰米(北京)科技有限公司 | Method and equipment for adaptively adjusting sound field balance |
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| CN111601219A (en) * | 2020-06-01 | 2020-08-28 | 峰米(北京)科技有限公司 | Method and equipment for adaptively adjusting sound field balance |
| CN112083379A (en) * | 2020-09-09 | 2020-12-15 | 成都极米科技股份有限公司 | Audio playing method and device based on sound source positioning, projection equipment and medium |
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| CN112083379B (en) * | 2020-09-09 | 2023-10-20 | 极米科技股份有限公司 | Audio playing method and device based on sound source localization, projection equipment and medium |
| WO2023071565A1 (en) * | 2021-10-25 | 2023-05-04 | 华为技术有限公司 | Automatic control method based on human body sensing, and first electronic device and system |
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