CN115361639A - Control method and application of double-vibration transducer - Google Patents
Control method and application of double-vibration transducer Download PDFInfo
- Publication number
- CN115361639A CN115361639A CN202211036904.0A CN202211036904A CN115361639A CN 115361639 A CN115361639 A CN 115361639A CN 202211036904 A CN202211036904 A CN 202211036904A CN 115361639 A CN115361639 A CN 115361639A
- Authority
- CN
- China
- Prior art keywords
- volume
- low
- vibration
- transducer
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention relates to a control method of a double-vibration transducer, which comprises the following steps: s1, after a signal for switching volume is obtained, detecting the real-time volume of two current loudspeakers; s2, judging whether the current volume is lower than a critical value or not; s3, when the amplitude is not lower than the critical value, the two loudspeakers keep inputting the same-phase electric signals, so that the two loudspeakers move in opposite directions to counteract vibration energy, reduce the resonance of the shell and start a vibration reduction mode; when the amplitude is lower than the critical value, an electric signal with an opposite phase is input to the loudspeaker 2, so that the two loudspeakers move towards the same direction, the vibrating diaphragm on one side extrudes air inwards, the vibrating diaphragm on the other side extrudes air outwards, and the low volume mode is started. The transducer increases the judgment on the volume, and when in a low volume mode, the vibration energy is low, so that the resonance influence on the enclosure is small, and the low volume mode is started, so that the low frequency sound effect can be greatly improved; when the volume is larger, the resonance of the machine shell is greatly influenced, and the vibration reduction mode is started, so that the resonance can be improved.
Description
Technical Field
The invention relates to the technical field of transducers, in particular to a control method and application of a double-vibration transducer.
Background
Electronic devices use transducers to output sound signals, often not at nominal power output, but at a low volume. When the low-volume work is carried out, the problems of poor performance and soft sound are often caused. For a dual-vibration transducer, at low volume operation, the energy is not sufficient to cause the housing to operate significantly, and the vibration damping mode is not effective.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, a control method and application of a dual-vibration transducer are provided.
The technical scheme adopted by the invention is as follows: a method of controlling a dual-vibration transducer, comprising the steps of:
s1, after a signal for switching volume is obtained, detecting the real-time volume of two current loudspeakers;
s2, judging whether the current volume is lower than a critical value or not;
s3, when the amplitude is not lower than the critical value, the two loudspeakers keep inputting the same-phase electric signals, so that the two loudspeakers move in opposite directions to counteract vibration energy, reduce the resonance of the shell and start a vibration reduction mode;
when the amplitude is lower than the critical value, inputting an electric signal with an opposite phase to the loudspeaker 2 to enable the two loudspeakers to move towards the same direction, wherein the vibrating diaphragm on one side extrudes air inwards, the vibrating diaphragm on the other side extrudes air outwards, and the low volume mode is started;
wherein, the double-vibration transducer adopts two groups of transducers which are stacked back to back.
Further, represented by the formula
In the formula, F0 is the natural vibration frequency of the transducer, fc is the resonance frequency of the transducer after being placed in the cavity, vas is the equivalent volume compliance, vb is the volume of the sound box cavity,
when Vb is infinite, the decrease of Fc approaches F0,
and Vb in the vibration reduction mode is less than Vb in the low volume mode, and Fc in the vibration reduction mode is more than Fc in the low volume mode and more than F0, so that the low-frequency performance in the low volume mode is improved, and the hearing feeling in the low volume mode is softer than that in the vibration reduction mode.
Further, represented by the formula
It can be seen that in the formula, P is sensitivity, BL is a transducer force factor, U is a voltage, sd is an equivalent area, re is a resistance, and Mms is a dynamic mass, and the sensitivity is affected by the above factors.
Further, still including adopting balanced effect ware to increase low frequency voltage in order to improve the low frequency audio, because power or power amplifier ability limited can have the upper limit when adjusting high low frequency voltage, when Fc reduces, same frequency department, the voltage of increaseing to same volume needs can reduce to the space of increase balanced effect ware adjustment, when adopting the low volume mode promptly, the space of voltage adjustment can increase.
Dual-vibrating transducers are used in electronic devices.
Compared with the prior art, the invention has the following advantages: the transducer of the invention increases the judgment of volume, and when in a low volume mode, the vibration energy of the transducer is low, so that the resonance influence on the enclosure is small, and the low volume mode is started, so that the low frequency sound effect can be greatly improved; when the volume is large, the resonance of the machine shell is greatly influenced, and the vibration reduction mode is started, so that the resonance can be improved.
Drawings
FIG. 1 is a control flow diagram of the present invention;
FIG. 2 is a schematic diagram of a dual-vibration transducer of the present invention;
FIG. 3a is a schematic illustration of the vibration damping mode of the dual-vibration transducer of the present invention;
FIG. 3b is a schematic diagram of the low volume mode of the dual-vibration transducer of the present invention;
FIG. 4a is a schematic diagram of the damping mode of the dual-vibration transducer of the present invention;
FIG. 4b is a schematic diagram of the low volume mode of the dual-vibration transducer of the present invention;
FIG. 5 is a graph of the sensitivity of the dual-vibration transducer of the present invention;
FIG. 6 is a graph of the amplitude of the dual-vibration transducer of the present invention;
fig. 7 is a graph of EQ of the present invention.
Detailed Description
The following examples are given to illustrate the embodiments of the present invention, which are carried out on the premise of the technical solution of the present invention, and to provide detailed embodiments and specific procedures, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1-4 b, a method of controlling a dual-vibration transducer includes the steps of:
s1, after a signal for switching volume is obtained, detecting the real-time volume of two current loudspeakers;
s2, judging whether the current volume is lower than a critical value or not;
s3, when the current value is not lower than the critical value, the two loudspeakers keep inputting the same-phase electric signals, so that the two loudspeakers move in opposite directions to counteract vibration energy, reduce the resonance of the shell and start a vibration reduction mode, as shown in figure 3 a;
when the amplitude is lower than the critical value, inputting an electric signal with an opposite phase to the loudspeaker 2 to enable the two loudspeakers to move towards the same direction, wherein the vibrating diaphragm on one side extrudes air inwards, the vibrating diaphragm on the other side extrudes air outwards, and the low volume mode is started;
wherein, the double-vibration transducer adopts two groups of transducers which are stacked back to back.
From the formula
In the formula, F0 is the natural vibration frequency of the transducer, fc is the resonance frequency of the transducer after being placed in the cavity, vas is the equivalent volume compliance, vb is the volume of the sound box cavity,
when Vb is infinite, fc decreases toward F0,
and Vb in the vibration reduction mode is less than Vb in the low volume mode, and Fc in the vibration reduction mode is more than Fc in the low volume mode and more than F0, so that the low-frequency performance in the low volume mode is improved, and the hearing feeling in the low volume mode is softer than that in the vibration reduction mode.
From the formula
It can be seen that in the formula, P is sensitivity, BL is a transducer force factor, U is a voltage, sd is an equivalent area, re is a resistance, and Mms is a dynamic mass, and the sensitivity is affected by the above factors.
As shown in fig. 5 and 6, where 2W is the curve of the dual-vibration transducer at large voltage, 0.25W is the curve of the conventional dual-vibration transducer at small voltage, and 0.25W-new is the curve of the dual-vibration transducer at low volume mode at small voltage. Under the same condition, the sensitivity and the vibration damping effect of the double-vibration transducer in the low-volume mode are obviously superior to those of the conventional double-vibration transducer.
As shown in fig. 7, the method further includes using the equalizer to adjust the low-frequency voltage to improve the low-frequency sound effect, when the low-frequency voltage is adjusted, there is an upper limit due to the limited power supply or power amplification capability, and in the low-volume mode, when Fc is decreased, the voltage required for adjusting the same volume to the same frequency is decreased, so as to increase the adjustment space of the equalizer.
Dual-vibrating transducers are used in electronic devices.
Claims (5)
1. A method of controlling a dual-vibration transducer, comprising the steps of:
s1, after a signal for switching volume is obtained, detecting the real-time volume of two current loudspeakers;
s2, judging whether the current volume is lower than a critical value or not;
s3, when the amplitude is not lower than the critical value, the two loudspeakers keep inputting the same-phase electric signals, so that the two loudspeakers move in opposite directions to counteract vibration energy, reduce the resonance of the shell and start a vibration reduction mode;
when the amplitude is lower than the critical value, inputting an electric signal with an opposite phase to the loudspeaker 2 to enable the two loudspeakers to move towards the same direction, wherein the vibrating diaphragm on one side extrudes air inwards, the vibrating diaphragm on the other side extrudes air outwards, and a low volume mode is started;
wherein, the double-vibration transducer adopts two groups of transducers which are stacked back to back.
2. A method of controlling a dual-vibrating transducer as recited in claim 1, wherein: is represented by the formula
In the formula, F0 is the natural vibration frequency of the transducer, fc is the resonance frequency of the transducer after being placed in the cavity, vas is the equivalent volume compliance, vb is the volume of the sound box cavity,
when Vb is infinite, the decrease of Fc approaches F0,
and Vb in the vibration reduction mode is less than Vb in the low volume mode, fc in the vibration reduction mode is more than Fc in the low volume mode is more than F0, so that the low-frequency performance in the low volume mode is improved, and the hearing in the low volume mode is softer than that in the vibration reduction mode.
3. A method of controlling a dual-vibration transducer according to claim 2, wherein: is represented by the formula
It can be seen that in the formula, P is the sensitivity, BL is the transducer force factor, U is the voltage, sd is the equivalent area, re is the resistance, and Mms is the dynamic mass, and the sensitivity is affected by the above factors.
4. A method of controlling a dual-vibrating transducer as recited in claim 3, wherein: the method also comprises the step of adjusting the low-frequency voltage by the balance effect device to improve the low-frequency sound effect, wherein an upper limit exists due to the limited power supply or power amplification capacity when the low-frequency voltage is adjusted, and when the Fc is reduced, the voltage required by the same volume is increased to be reduced at the same frequency, so that the adjustment space of the balance effect device is enlarged.
5. Use of a dual-vibrating transducer according to any one of claims 1-4, wherein: the dual-vibration transducer is applied to electronic equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036904.0A CN115361639A (en) | 2022-08-25 | 2022-08-25 | Control method and application of double-vibration transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036904.0A CN115361639A (en) | 2022-08-25 | 2022-08-25 | Control method and application of double-vibration transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115361639A true CN115361639A (en) | 2022-11-18 |
Family
ID=84004276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211036904.0A Pending CN115361639A (en) | 2022-08-25 | 2022-08-25 | Control method and application of double-vibration transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115361639A (en) |
-
2022
- 2022-08-25 CN CN202211036904.0A patent/CN115361639A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105704624B (en) | The method for controlling the diaphragm offset of dynamic loudspeaker | |
| US9008323B2 (en) | Wide dynamic range microphone | |
| CN102804598B (en) | Method and circuit for controlling an output of an audio signal of a battery-powered device | |
| CN102638736B (en) | Control of a loudspeaker unit | |
| JP4177328B2 (en) | Signal strength information dependent control of small dynamic transducers in audio systems | |
| US20130077795A1 (en) | Over-Excursion Protection for Loudspeakers | |
| US10200000B2 (en) | Handheld electronic apparatus, sound producing system and control method of sound producing thereof | |
| US10165364B2 (en) | Linear resonant actuator controller | |
| CN102610229B (en) | Method, apparatus and device for audio dynamic range compression | |
| JP5129196B2 (en) | Method and electronic device for driving a capacitor-type electroacoustic transducer | |
| CN106101932A (en) | A kind of loudspeaker audio drive circuit, method and intelligent terminal | |
| US10756689B2 (en) | Dynamic limiting when driving high capacitive loads | |
| JP2019140660A (en) | Sound amplification system integrated with back cavity pressure sensing, and audio player | |
| JPH04278796A (en) | External environment adaptive type sound volume adjusting method | |
| US11323810B2 (en) | Microphone system | |
| CN115361639A (en) | Control method and application of double-vibration transducer | |
| CN103404170B (en) | For driving the method for condenser microphone | |
| KR20120066634A (en) | Electronic audio device | |
| JP3147662B2 (en) | Sound reproduction device | |
| CN208590109U (en) | A kind of public address system and audio player of integrated back cavity pressure perception | |
| JP5006109B2 (en) | Condenser microphone | |
| KR102348187B1 (en) | Speaker driver and operating method thereof, computer program | |
| CN110830891B (en) | High-power frequency-division-self full-frequency loudspeaker | |
| JP4947708B2 (en) | Condenser microphone unit and condenser microphone | |
| CN117278900A (en) | Howling suppression method for earphone monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |