CN108366316B - A kind of technical method meeting Doby panorama sound standard implementation - Google Patents
A kind of technical method meeting Doby panorama sound standard implementation Download PDFInfo
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- CN108366316B CN108366316B CN201810038751.0A CN201810038751A CN108366316B CN 108366316 B CN108366316 B CN 108366316B CN 201810038751 A CN201810038751 A CN 201810038751A CN 108366316 B CN108366316 B CN 108366316B
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- sound
- doby
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- frequency
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000004044 response Effects 0.000 claims abstract description 36
- 238000005457 optimization Methods 0.000 abstract description 3
- 241001503991 Consolida Species 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- 238000010998 test method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- General Health & Medical Sciences (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a kind of technical methods for meeting Doby panorama sound standard implementation, by reference to axial direction, because loudspeaker front panel or reasonable ante-chamber have amplification to act on (such as high pitch amplifier sound, professional bugle etc.), ensure the optimization of structural member, that is influence of the structure to sound optimizes, sound cup opening is smaller, directive property is more clear, but opening is smaller to influence axial frequency response curve, thus we need to find an equalization point therebetween to meet the requirement of Doby directive property, meeting Doby directive property requires us to need to be required to find the position for being unsatisfactory for requiring in sound cup according to Doby directive property, consequently facilitating we modify adjustment, above-mentioned purpose thus can be completed by this test method.
Description
Technical field
It is especially a kind of to meet Doby sound directivity the present invention relates to the technical method of a kind of collocation and debugging of loudspeaker
Standard technical method.
Background technique
It is well known that the directive property of high frequency is strong (big with angle change) in the effective frequency range that human ear can perceive,
And the directive property of low frequency is weaker；
The design requirement: selecting suitable loudspeaker, and carry out the division of labor of frequency field: mediant trumpet is responsible for mid-frequency region,
High-pitched speaker is responsible for high-frequency region.
The emphasis of the design be in high-frequency region, and the design focal point of high-frequency region be influence high frequency structure division,
Guarantee that the directive property of high frequency does not change not instead of arbitrarily, meets the index of Doby requirement and change.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of technical side for meeting Doby panorama sound standard implementation
Method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of technical method meeting Doby panorama sound standard implementation, it is characterised in that: the following steps are included:
Design method
One, test horn and test device are got out, and set test horn and test according to scheduled position and angle
Device tests out the pad value of the forward direction axial response frequency of test horn and the pad value of backward axial response frequency, preceding
The test scope of response frequency and backward axial response frequency is equal in the axial direction are as follows: and 1.5K-20K hertz,
Two, in test scope, it will be rung in the axial direction before the preceding pad value to axial response frequency and Doby standard requirements
The pad value of frequency is answered to compare；By the backward axial response frequency of the rear pad value to axial response frequency and Doby index
Pad value compare, above-mentioned comparison is both to take to compare in the identical situation of frequency values,
If the pad value of above-mentioned a certain response frequency is greater than the pad value of Doby standard requirements, following formula one is calculated
D value,
If the pad value of the response frequency in above-mentioned a certain range is all larger than the pad value of Doby standard requirements, according to such as
Lower formula two calculates D value:
F1 and f2 is in response to the lower and upper limit of frequency；
λ is wavelength, and n round numbers, f is frequency, and c is the aerial spread speed of sound,
Calculated D value represents the diameter in the sound cup somewhere of test horn, we find position of the diameter on sound cup,
Then it adjusts.
The method of adjustment are as follows: by diameter be that the position height of sound wall of cup at D value is adjusted to height H at, the value of the H and
D value is identical, and H is represented from sound bottom of a cup portion to the vertical height of certain of sound wall of cup.
The beneficial effects of the present invention are: with reference to axial direction, because loudspeaker front panel or reasonable ante-chamber have amplification to sound
It acts on (such as high pitch amplifier, professional bugle etc.), it is ensured that the influence of the optimization of structural member, i.e. structure to sound optimizes, sound
Cup opening is smaller, and directive property is more clear, but opening is smaller to influence axial frequency response curve, thus we need in the two
Between find an equalization point meet Doby directive property requirement, to meet Doby directive property require we need referred to according to Doby
Tropism requires to find the position for being unsatisfactory for requiring in sound cup, consequently facilitating we modify adjustment, thus can by this test method
To complete above-mentioned purpose.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the attenuation change curve graph of the forward direction axial response frequency of Doby standard requirements；
Fig. 2 is the attenuation change curve graph of the backward axial response frequency of Doby standard requirements；
Fig. 3 is the attenuation change curve graph of the response frequency of actual measurement；
Fig. 4 is the sizing schematic diagram of sound cup.
Specific embodiment
Referring to figs. 1 to Fig. 4, the invention discloses a kind of technical method for meeting Doby panorama sound standard implementation, packets
Include following steps:
One, test horn and test device are got out, and set test horn and test according to scheduled position and angle
Device tests out the pad value of the forward direction axial response frequency of test horn and the pad value of backward axial response frequency, preceding
The test scope of response frequency and backward axial response frequency is equal in the axial direction are as follows: and 1.5K-20K hertz, in this step, test dress
It sets and scheduled position is to be arranged according to Doby requirement, thus detailed process and device are not described in detail with angle
Two, in test scope, it will be rung in the axial direction before the preceding pad value to axial response frequency and Doby standard requirements
The pad value of frequency is answered to compare；By the backward axial response frequency of the rear pad value to axial response frequency and Doby index
Pad value compare, above-mentioned comparison is both to take to compare in the identical situation of frequency values,
If the pad value of above-mentioned a certain response frequency is greater than the pad value of Doby standard requirements, following formula one is calculated
D value,
If the pad value of the response frequency in above-mentioned a certain range is all larger than the pad value of Doby standard requirements, according to such as
Lower formula two calculates D value:
F1 and f2 is the lower and upper limit of the response frequency of a certain range；
λ is wavelength, and n takes the integral multiple of 1/4 wavelength, and f is frequency, and c is the aerial spread speed of sound,
Calculated D value represents the diameter in the sound cup somewhere of test horn, we find position of the diameter on sound cup,
Then it adjusts.
As shown in figure 3, the f1 and f2 of Fig. 3；The pad value of the two frequency separations of f3 and f4 is all larger than Doby standard requirements
Pad value the position where this D value is then found, according to as follows then we just need to calculate D value according to formula two
Method adjustment: the position height of part that diameter on sound wall of cup is D value is adjusted at height H, and to guarantee sound wall of cup
Curved surface it is continuous and smooth, the value of the H is identical as D value, and H represent from sound bottom of a cup portion to the vertical height of certain of sound wall of cup
Degree.To complete the optimization of sound cup, i.e. influence of the sound cup to sound optimizes.
It is provided for the embodiments of the invention a kind of technical method for meeting Doby panorama sound standard implementation above, into
It has gone and has been discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, the above implementation
The explanation of example is merely used to help understand method and its core concept of the invention；Meanwhile for the general technology people of this field
Member, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this explanation
Book content should not be construed as limiting the invention.
Claims (1)
1. a kind of technical method for meeting Doby panorama sound standard implementation, it is characterised in that: the following steps are included:
One, test horn and test device are got out, and set test horn and test device according to scheduled position and angle,
Test out the pad value of the forward direction axial response frequency of test horn and the pad value of backward axial response frequency, it is preceding in the axial direction
The test scope of response frequency and backward axial response frequency is equal are as follows: and 1.5K-20K hertz,
Two, in test scope, by the forward direction axial response frequency of the preceding pad value to axial response frequency and Doby standard requirements
The pad value of rate compares；By declining for the rear pad value to axial response frequency and the backward axial response frequency of Doby index
Depreciation compares, and above-mentioned comparison is to take to compare in the identical situation of the two frequency values,
If the pad value of above-mentioned a certain response frequency is greater than the pad value of Doby standard requirements, following formula one calculates D value,
If the pad value of the response frequency in above-mentioned a certain range is all larger than the pad value of Doby standard requirements, according to following public
Formula two calculates D value:
F1 and f2 is in response to the lower and upper limit of frequency；
λ is wavelength, and n round numbers, f is frequency, and c is the aerial spread speed of sound,
Calculated D value represents the diameter in the sound cup somewhere of test horn, we find position of the diameter on sound cup, then
It adjusts,
The method of adjustment are as follows: the position height of part that diameter on sound wall of cup is D value is adjusted to height H at, the value of the H and
D value is identical, and H is represented from sound bottom of a cup portion to the vertical height of certain of sound wall of cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810038751.0A CN108366316B (en) | 2018-01-16 | 2018-01-16 | A kind of technical method meeting Doby panorama sound standard implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810038751.0A CN108366316B (en) | 2018-01-16 | 2018-01-16 | A kind of technical method meeting Doby panorama sound standard implementation |
Publications (2)
| Publication Number | Publication Date |
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| CN108366316A CN108366316A (en) | 2018-08-03 |
| CN108366316B true CN108366316B (en) | 2019-10-08 |
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| CN201810038751.0A Active CN108366316B (en) | 2018-01-16 | 2018-01-16 | A kind of technical method meeting Doby panorama sound standard implementation |
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| US7590257B1 (en) * | 2004-12-22 | 2009-09-15 | Klipsch, Llc | Axially propagating horn array for a loudspeaker |
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| CN1596038A (en) * | 2003-09-09 | 2005-03-16 | 阿尔派株式会社 | Audio device and audio processing method |
| US7590257B1 (en) * | 2004-12-22 | 2009-09-15 | Klipsch, Llc | Axially propagating horn array for a loudspeaker |
| CN101547392A (en) * | 2008-03-27 | 2009-09-30 | 固昌通讯股份有限公司 | Earphone structure capable of adjusting air permeability of cavity |
| CN202206542U (en) * | 2011-09-05 | 2012-04-25 | 中山市悦辰电子实业有限公司 | Sound equipment capable of being hung on the wall |
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|---|---|
| CN108366316A (en) | 2018-08-03 |
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