CN111131961A - Sound box and sound box resonance improvement method - Google Patents
Sound box and sound box resonance improvement method Download PDFInfo
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- CN111131961A CN111131961A CN201911401876.6A CN201911401876A CN111131961A CN 111131961 A CN111131961 A CN 111131961A CN 201911401876 A CN201911401876 A CN 201911401876A CN 111131961 A CN111131961 A CN 111131961A
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- 238000001514 detection method Methods 0.000 claims abstract description 64
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- 230000002093 peripheral effect Effects 0.000 description 2
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- 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
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- 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
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a sound box for improving resonance and an improvement method, wherein the sound box comprises a shell, a loudspeaker, a vibration detection unit and a control unit, the vibration detection unit is used for detecting vibration information of the shell and transmitting the detected vibration information to the control unit, and the control unit is used for judging whether the shell is in a resonance state or not according to the vibration information transmitted by the vibration detection unit, so that the sound output parameter of the loudspeaker is adjusted, the shell is prevented from being in the resonance state, and resonance abnormal sound is avoided.
Description
Technical Field
The invention belongs to the technical field of sound production devices, and particularly relates to a sound box and a sound box resonance improvement method.
Background
Resonance phenomena refer to the tendency of a physical system to absorb more energy from the surrounding environment at its natural vibration frequency (the so-called resonance frequency). There are many places in nature where there is a phenomenon of resonance. Humans also utilize or attempt to avoid resonance phenomena in their technology. Some examples of resonances are as follows: acoustic resonance of musical instruments, orbital resonance between satellites of some of the planets of the solar system, resonance of basement membranes in animal ears, resonance of circuits, and the like.
The casing of audio amplifier also has fixed resonant frequency as the object of specific structure, when the broadcast stereo set, if the frequency of sound is unanimous with audio amplifier casing resonant frequency, will produce the resonance phenomenon of audio amplifier, and other frequencies can be compared to the casing under this situation and can be vibrated with bigger amplitude, and then produce the abnormal sound, reduce product tone quality effect, influence experience.
The resonance problem of the sound box is a problem which is serious and difficult to solve in the research and development process of sound box products, and the problem which is solved in the design of the prior art, the resonance abnormal sound appears again along with the aging of the products or the loosening of structural parts in the using process, the product experience is poor after long-term use, and the products are easier to damage.
Therefore, there is a need for an improvement to overcome the deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a sound box and a sound box resonance improving method.
The technical scheme of the invention is as follows:
first, the technique of the present invention is defined
VPU (vibration sensor): for testing object vibration data.
A dsp (digital signal processor) is a unique microprocessor, which is a device that processes a large amount of information with digital signals. The working principle is that the analog signal is received and converted into a digital signal of 0 or 1, then the digital signal is modified, deleted and strengthened, and the digital data is interpreted back to the analog data or the actual environment format in other system chips. It has not only programmability, but also its real-time running speed can reach tens of millions of complex instruction programs per second, far exceeding general microprocessor, and is an increasingly important computer chip in the digital electronic world. Its powerful data processing capacity and high running speed are two most worthy features. A DSP chip refers to a chip capable of implementing digital signal processing techniques. The DSP chip is a fast and powerful microprocessor, and is characterized in that the DSP chip can process data in real time. The DSP chip adopts a Harvard structure with separated programs and data, is provided with a special hardware multiplier and can be used for quickly realizing various digital signal processing algorithms. In the background of the present digital age, DSP has become a fundamental device in the fields of communications, computers, consumer electronics, and the like.
The MCU, a micro controller Unit (microcontrol Unit), also called a Single chip microcomputer (CPU), or a Single chip Microcomputer (MCU), is a chip-level computer formed by appropriately reducing the frequency and specification of a Central Processing Unit (CPU), and integrating peripheral interfaces such as a memory, a counter (Timer), a USB, a/D conversion, a UART, a PLC, a DMA, and the like, and even an LCD driving circuit, on a Single chip, and performing different combination control for different applications. Such as mobile phones, PC peripherals, remote controls, controls for automotive electronics, industrial stepper motors, robotic arms, etc., are all seen in the use of MCUs.
A sound box comprises a shell, a loudspeaker, a vibration detection unit and a control unit, wherein the vibration detection unit is used for detecting vibration information of the shell and transmitting the detected vibration information to the control unit;
the control unit is used for adjusting the sound output parameters of the loudspeaker according to the vibration information transmitted by the vibration detection unit.
Preferably, the control unit is configured to determine whether the housing is in a resonance state according to the vibration information transmitted by the vibration detection unit, and if it is determined that the housing is in the resonance state, the control unit adjusts the sound output parameter of the horn.
Preferably, the vibration detection unit is configured to detect a vibration frequency and an amplitude of the housing; the control unit analyzes the vibration frequency when the amplitude of the shell is maximum, the vibration frequency is taken as the resonance frequency of the shell, if the control unit detects that the resonance frequency of the shell appears, the shell is judged to be in a resonance state, and the control unit adjusts the gain value of the frequency of an output equalizer of the loudspeaker.
Preferably, the vibration detection unit is configured to detect a vibration frequency and an amplitude of the housing; the control unit analyzes a vibration frequency interval when the amplitude of the shell is larger than a rated value, the vibration frequency interval is used as a resonance frequency interval of the shell, if the control unit detects that the shell has vibration frequency in the resonance frequency interval, the shell is judged to be in a resonance state, and the control unit adjusts a gain value of the frequency of an output equalizer of the loudspeaker.
Preferably, the vibration detection unit is arranged on the shell, and the number of the vibration detection units is one or more; when the vibration detection unit is plural, the control unit takes an average value of the resonance frequencies detected by each of the vibration detection units as the resonance frequency of the housing.
Preferably, the vibration detection unit is arranged on the shell, and the number of the vibration detection units is one or more; when the vibration detection units are multiple, the control unit takes the average value of the vibration frequency values of the same end in two ends of the resonance frequency interval detected by each vibration detection unit as the resonance frequency interval of the shell.
Preferably, the control unit is a microprocessor or a micro control unit.
Another aspect of the present invention provides a method for improving resonance of a sound box, including the steps of:
the first step is as follows: the loudspeaker box plays sound;
the second step is that: the vibration detection unit detects vibration information of the shell and transmits the detected vibration information to the control unit;
the third step: the control unit judges whether the shell is in a resonance state or not according to the vibration information transmitted by the vibration detection unit;
the fourth step: and if the control unit judges that the shell is in a resonance state, the control unit adjusts the gain value of the frequency of the output equalizer of the loudspeaker.
Preferably, in the second step, the vibration detection unit is configured to detect a vibration frequency and an amplitude of the housing; the control unit analyzes the vibration frequency when the amplitude of the shell is maximum, and takes the vibration frequency as the resonance frequency of the shell;
or the control unit analyzes a vibration frequency interval when the amplitude of the shell is greater than a rated value and takes the vibration frequency interval as a resonance frequency interval of the shell;
when the control unit detects that the vibration frequency of the housing is in the resonance frequency or the resonance frequency section, the control unit determines that the housing is in a resonance state.
Preferably, if the control unit determines that the housing is in a resonance state, the control unit decreases a gain value of the output equalizer of the horn at this frequency.
The invention discloses a sound box for improving resonance and an improving method, wherein a vibration detection unit is added on a shell of a product, vibration data of the shell is collected when the sound box is used, a control unit analyzes a resonance frequency with the maximum vibration amplitude or a resonance frequency interval with the vibration amplitude larger than a certain amplitude, the gain value of an output equalizer of a loudspeaker is properly adjusted, and the problem of resonance abnormal sound is improved.
Drawings
FIG. 1 is a flow chart of a method for improving resonance of a sound box according to the present invention;
FIG. 2 is a flowchart of a method for improving resonance of a sound box according to embodiment 1 of the present invention;
FIG. 3 is a graph showing the relationship between the vibration amplitude and the vibration frequency of the cabinet case in embodiment 1 of the present invention;
FIG. 4 is a flowchart of a method for improving resonance of a sound box according to embodiment 2 of the present invention;
Detailed Description
In order to make the technical means, technical features, objects and technical effects of the present invention easily understood and appreciated, the following detailed description is given with reference to the accompanying drawings.
The invention discloses a sound box which comprises a shell, a loudspeaker, a vibration detection unit and a control unit, wherein the vibration detection unit is used for detecting vibration information of the shell and transmitting the detected vibration information to the control unit;
the control unit is used for judging whether the shell is in a resonance state or not according to the vibration information transmitted by the vibration detection unit, and if the shell is judged to be in the resonance state, the control unit adjusts the sound output parameters of the loudspeaker.
The vibration detection unit is used for detecting the vibration frequency and the vibration amplitude of the shell; the control unit analyzes the vibration frequency when the amplitude of the shell is maximum, the vibration frequency is used as the resonance frequency of the shell, if the control unit detects that the shell has the resonance frequency, the shell is judged to be in a resonance state, and the control unit adjusts the gain value of the output equalizer of the loudspeaker to avoid abnormal sound caused by the resonance frequency of the shell.
Or the vibration detection unit is used for detecting the vibration frequency and the vibration amplitude of the shell; the control unit analyzes a vibration frequency interval when the amplitude of the shell is larger than a rated value, the vibration frequency interval is used as a resonance frequency interval of the shell, if the control unit detects that the shell has vibration frequency in the resonance frequency interval, the shell is judged to be in a resonance state, and the control unit adjusts a gain value of an output equalizer of the loudspeaker to avoid abnormal sound caused by the resonance frequency of the shell.
Furthermore, the vibration detection unit is arranged on the shell, and one or more vibration detection units are arranged; when the vibration detection unit is plural, the control unit takes an average value of the resonance frequencies detected by each vibration detection unit as the resonance frequency of the housing.
Furthermore, the vibration detection unit is arranged on the shell, and one or more vibration detection units are arranged; when the vibration detection units are multiple, the control unit takes the average value of the same end vibration frequency value in the two end values (the end value minimum end and the end value maximum end) of the resonance frequency interval detected by each vibration detection unit as the resonance frequency interval of the shell.
Specifically, the control unit is a microprocessor or a micro control unit.
As shown in fig. 1, another aspect of the present invention provides a method for improving resonance of a sound box, including the following steps:
the first step is as follows: the loudspeaker box plays sound;
the second step is that: the vibration detection unit detects vibration information of the shell and transmits the detected vibration information to the control unit;
the third step: the control unit judges whether the shell is in a resonance state or not according to the vibration information transmitted by the vibration detection unit;
the fourth step: if the control unit judges that the shell is in a resonance state, the control unit adjusts the gain value of the frequency of the output equalizer of the loudspeaker, and abnormal sound caused by the resonance frequency of the shell is avoided.
In the second step, the vibration detection unit is used for detecting the vibration frequency and the vibration amplitude of the shell; the control unit analyzes the vibration frequency when the amplitude of the shell is maximum and takes the vibration frequency as the resonance frequency of the shell;
or the control unit analyzes a vibration frequency interval when the amplitude of the shell is larger than a rated value and takes the vibration frequency interval as a resonance frequency interval of the shell;
when the control unit detects that the vibration frequency of the housing is at the resonance frequency or the resonance frequency section, the control unit determines that the housing is in the resonance state.
Further, if the control unit determines that the housing is in a resonance state, the control unit decreases a gain value of the output equalizer of the horn at the frequency.
Example 1:
the embodiment discloses a sound box, which comprises a shell, a loudspeaker, a vibration detection unit and a control unit, wherein the vibration detection unit is used for detecting vibration information such as vibration frequency and amplitude of the shell and transmitting the detected vibration information to the control unit;
the control unit is used for judging whether the shell is in a resonance state or not according to the vibration information transmitted by the vibration detection unit, and if the shell is judged to be in the resonance state, the control unit adjusts the sound output parameters of the loudspeaker. The control unit analyzes the vibration frequency when the amplitude of the shell is maximum, the vibration frequency is used as the resonance frequency of the shell, if the control unit detects that the shell is in the resonance state when the resonance frequency occurs, the control unit adjusts the gain value of the frequency of the output equalizer of the loudspeaker, and abnormal sound caused by the resonance frequency of the shell is avoided.
As shown in fig. 2 and fig. 4, the sound box of the present invention effectively improves the problem that the playing effect is affected by the abnormal sound generated by the resonance of the housing when the speaker plays.
Another aspect of the present embodiment discloses a method for improving resonance of a sound box, including:
the first step is as follows: the loudspeaker box plays sound;
the second step is that: the vibration detection unit detects vibration information such as vibration frequency and amplitude of the shell and transmits the detected vibration information to the control unit;
the third step: the control unit judges whether the shell is in a resonance state or not according to the vibration information transmitted by the vibration detection unit; the control unit analyzes the vibration frequency when the amplitude of the shell is maximum, and takes the vibration frequency as the resonance frequency of the shell, and the resonance frequency is generated, namely a resonance state is generated;
the fourth step: if the control unit detects that the resonance frequency occurs, the control unit judges that the shell is in a resonance state, and then the control unit reduces the gain value of an output equalizer of the loudspeaker, so that abnormal sound caused by the resonance frequency of the shell is avoided.
In the embodiment, when the vibration frequency of the casing is 145Hz, the maximum amplitude of the casing occurs, that is, 145Hz is the resonance frequency of the enclosure of the sound box, and when the resonance frequency of the casing is 145Hz, the casing is in a resonance state.
According to the sound box for improving resonance and the improvement method, the vibration detection unit is added on the shell of the product, the control unit analyzes the resonance frequency with the maximum vibration amplitude by collecting the vibration data of the shell when in use, and the gain value of the output equalizer of the loudspeaker is properly adjusted to improve the problem of resonance abnormal sound.
Example 2:
the embodiment discloses a sound box, which comprises a shell, a loudspeaker, a vibration detection unit and a control unit, wherein the vibration detection unit is used for detecting vibration information such as vibration frequency and amplitude of the shell and transmitting the detected vibration information to the control unit;
the control unit analyzes a vibration frequency interval when the amplitude of the shell is larger than a rated value, the vibration frequency interval is used as a resonance frequency interval of the shell, if the control unit detects that the shell has vibration frequency in the resonance frequency interval, the shell is judged to be in a resonance state, and the control unit adjusts a gain value of an output equalizer of the loudspeaker to enable the vibration frequency of the shell not to be in the resonance frequency interval, so that abnormal sound caused by the resonance frequency of the shell is avoided.
The loudspeaker box effectively solves the problem that the playing effect is influenced by abnormal sound generated by shell resonance when the loudspeaker plays.
As shown in fig. 3, another aspect of the present embodiment discloses a method for improving resonance of a sound box, including:
the first step is as follows: the loudspeaker box plays sound;
the second step is that: the vibration detection unit detects vibration information such as vibration frequency and amplitude of the shell and transmits the detected vibration information to the control unit;
the third step: the control unit judges whether the shell is in a resonance state or not according to the vibration information transmitted by the vibration detection unit; the control unit analyzes a vibration frequency interval when the amplitude of the shell is larger than a rated value, the vibration frequency interval is used as a resonance frequency interval of the shell, and if the control unit detects that the shell has vibration frequency in the resonance frequency interval, the shell is judged to be in a resonance state;
the fourth step: if the control unit judges that the vibration frequency of the shell is in a resonance frequency interval, namely in a resonance state, the control unit reduces the gain value of an output equalizer of the loudspeaker, so that the vibration frequency of the shell is not in the resonance frequency interval, and abnormal sound caused by the resonance frequency of the shell is avoided.
According to the sound box for improving resonance and the improvement method, the vibration detection unit is added on the shell of the product, the control unit analyzes the resonance frequency with the maximum vibration amplitude by collecting the vibration data of the shell when in use, and the gain value of the output equalizer of the loudspeaker is properly adjusted to improve the problem of resonance abnormal sound.
In summary, the embodiments of the present invention are merely exemplary and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made according to the content of the claims of the present invention should fall within the technical scope of the present invention.
Claims (10)
1. A sound box is characterized in that: the vibration detection unit is used for detecting vibration information of the shell and transmitting the detected vibration information to the control unit;
the control unit is used for adjusting the sound output parameters of the loudspeaker according to the vibration information transmitted by the vibration detection unit.
2. The sound box according to claim 1, wherein the control unit is configured to determine whether the housing is in a resonance state according to the vibration information transmitted by the vibration detection unit, and if the housing is determined to be in the resonance state, the control unit adjusts the sound output parameters of the speaker.
3. The loudspeaker of claim 1, wherein: the vibration detection unit is used for detecting the vibration frequency and the vibration amplitude of the shell; the control unit analyzes the vibration frequency when the amplitude of the shell is maximum, the vibration frequency is taken as the resonance frequency of the shell, if the control unit detects that the resonance frequency of the shell appears, the shell is judged to be in a resonance state, and the control unit adjusts the gain value of the frequency of an output equalizer of the loudspeaker.
4. The loudspeaker of claim 1, wherein: the vibration detection unit is used for detecting the vibration frequency and the vibration amplitude of the shell; the control unit analyzes a vibration frequency interval when the amplitude of the shell is larger than a rated value, the vibration frequency interval is used as a resonance frequency interval of the shell, if the control unit detects that the shell has vibration frequency in the resonance frequency interval, the shell is judged to be in a resonance state, and the control unit adjusts a gain value of the frequency of an output equalizer of the loudspeaker.
5. The sound box according to claim 3, wherein the vibration detection unit is arranged on the shell, and the vibration detection unit is one or more; when the vibration detection unit is plural, the control unit takes an average value of the resonance frequencies detected by each of the vibration detection units as the resonance frequency of the housing.
6. The sound box according to claim 4, wherein the vibration detection unit is arranged on the shell, and the vibration detection unit is one or more; when the vibration detection units are multiple, the control unit takes the average value of the vibration frequency values of the same end in two ends of the resonance frequency interval detected by each vibration detection unit as the resonance frequency interval of the shell.
7. The loudspeaker of claim 1, wherein: the control unit is a microprocessor or a micro control unit.
8. A method for improving resonance of an acoustic enclosure, for use in the acoustic enclosure of any one of claims 1 to 7, comprising the steps of:
the first step is as follows: the loudspeaker box plays sound;
the second step is that: the vibration detection unit detects vibration information of the shell and transmits the detected vibration information to the control unit;
the third step: the control unit judges whether the shell is in a resonance state or not according to the vibration information transmitted by the vibration detection unit;
the fourth step: and if the control unit judges that the shell is in a resonance state, the control unit adjusts the gain value of the frequency of the output equalizer of the loudspeaker.
9. The method for improving resonance of an acoustic enclosure of claim 8, wherein: in the second step, the vibration detection unit is used for detecting the vibration frequency and the vibration amplitude of the shell; the control unit analyzes the vibration frequency when the amplitude of the shell is maximum, and takes the vibration frequency as the resonance frequency of the shell;
or the control unit analyzes a vibration frequency interval when the amplitude of the shell is greater than a rated value and takes the vibration frequency interval as a resonance frequency interval of the shell;
when the control unit detects that the vibration frequency of the housing is in the resonance frequency or the resonance frequency section, the control unit determines that the housing is in a resonance state.
10. The method for improving resonance of an acoustic enclosure according to claim 8, wherein: if the control unit judges that the shell is in a resonance state, the control unit reduces the gain value of the frequency of the output equalizer of the loudspeaker.
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| CN201911401876.6A CN111131961A (en) | 2019-12-31 | 2019-12-31 | Sound box and sound box resonance improvement method |
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| CN201911401876.6A CN111131961A (en) | 2019-12-31 | 2019-12-31 | Sound box and sound box resonance improvement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111988700A (en) * | 2020-06-30 | 2020-11-24 | 联想(北京)有限公司 | Electronic equipment and method for fixing audio output equipment |
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| CN1289522A (en) * | 1998-12-01 | 2001-03-28 | 松下电器产业株式会社 | Speaker device |
| CN1369188A (en) * | 1999-08-11 | 2002-09-11 | 太平洋微超声公司 | Compensation system and method for sound reproduction |
| EP1855093A1 (en) * | 2006-05-09 | 2007-11-14 | Robert Bosch Gmbh | Method for adjusting the resonance frequency of an oscillation section for a sensor |
| US20100232623A1 (en) * | 2009-03-12 | 2010-09-16 | Avago Technologies Wireless Ip (Singapore) Pte. Ltd. | Transducer device including feedback circuit |
| CN107295451A (en) * | 2017-07-14 | 2017-10-24 | 歌尔科技有限公司 | A kind of method and apparatus for detecting audio amplifier resonance |
-
2019
- 2019-12-31 CN CN201911401876.6A patent/CN111131961A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113644A (en) * | 1995-04-24 | 1995-12-20 | 徐耀忠 | Frequency Q-value balancing method for electric audio system |
| CN1289522A (en) * | 1998-12-01 | 2001-03-28 | 松下电器产业株式会社 | Speaker device |
| CN1369188A (en) * | 1999-08-11 | 2002-09-11 | 太平洋微超声公司 | Compensation system and method for sound reproduction |
| EP1855093A1 (en) * | 2006-05-09 | 2007-11-14 | Robert Bosch Gmbh | Method for adjusting the resonance frequency of an oscillation section for a sensor |
| US20100232623A1 (en) * | 2009-03-12 | 2010-09-16 | Avago Technologies Wireless Ip (Singapore) Pte. Ltd. | Transducer device including feedback circuit |
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| CN111988700A (en) * | 2020-06-30 | 2020-11-24 | 联想(北京)有限公司 | Electronic equipment and method for fixing audio output equipment |
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Application publication date: 20200508 |