CN110769350A - Method for adjusting loudness of loudspeaker and loudspeaker - Google Patents
Method for adjusting loudness of loudspeaker and loudspeaker Download PDFInfo
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- CN110769350A CN110769350A CN201910931282.XA CN201910931282A CN110769350A CN 110769350 A CN110769350 A CN 110769350A CN 201910931282 A CN201910931282 A CN 201910931282A CN 110769350 A CN110769350 A CN 110769350A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005236 sound signal Effects 0.000 claims abstract description 45
- 239000000428 dust Substances 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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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
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- 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
- H04R9/04—Construction, mounting, or centering of coil
-
- 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
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention relates to a method for adjusting the loudness of a loudspeaker, which belongs to the field of loudspeakers and comprises the following steps: s1, the signal source sends the sound signal to the digital signal processor, the digital signal processor sends the processed sound signal to the power amplifier, the power amplifier amplifies the sound signal and transmits the amplified sound signal to the loudspeaker, and the loudspeaker produces sound; s2, collecting vibration information of a vibrating diaphragm of the loudspeaker during sounding by a collecting device, sending the collected vibration information to a digital signal processor, analyzing and processing the vibration information by the digital signal processor, and calculating the actual loudness corresponding to the vibration information; and S3, the digital signal processor compares the actual loudness with the preset loudness, and then performs targeted adjustment on the sound signal according to the comparison result. The invention can eliminate the sounding error of the loudspeaker.
Description
Technical Field
The invention relates to the field of loudspeakers, in particular to a method for adjusting the loudness of a loudspeaker.
Background
Music is an important component of people's mental enjoyment. With the development of science and technology, more and more terminals capable of playing audio files are available, such as sound boxes, mobile phones, computers, MP3, and the like. A loudspeaker generally refers to a device that converts an audio signal into sound. The effect is often to convert the audio electrical energy into corresponding acoustic energy through a horn and radiate it into space. However, in the production process or along with the increase of the use time of the speaker in the sound box, certain errors may be generated between the structure of the speaker and the preset structure, so that certain errors may be generated in the sound generated by the speaker.
Disclosure of Invention
Based on this, there is a need for a method for adjusting the loudness of a horn, comprising the steps of:
s1, the signal source sends the sound signal to the digital signal processor, the digital signal processor sends the processed sound signal to the power amplifier, the power amplifier amplifies the sound signal and transmits the amplified sound signal to the loudspeaker, and the loudspeaker produces sound;
s2, collecting vibration information of a vibrating diaphragm of the loudspeaker during sounding by a collecting device, sending the collected vibration information to a digital signal processor, analyzing and processing the vibration information by the digital signal processor, and calculating the actual loudness corresponding to the vibration information;
and S3, the digital signal processor compares the actual loudness with the preset loudness, and then performs targeted adjustment on the sound signal according to the comparison result.
Wherein, collection system can gather vibration information and include the amplitude and the vibration frequency of vibrating diaphragm, digital signal processor receives after the vibration information that information acquisition sent and come, can calculate the actual loudness that loudspeaker sent, then compare its preset loudness with loudspeaker, digital signal processor adjusts sound signal's voltage and frequency according to the difference of actual loudness with preset loudness, thereby reach the purpose of adjusting actual loudness, in order to eliminate this difference, thereby eliminate the loss production sound production error of each part in the dimensional error of loudspeaker in process of production and use, thereby make actual loudness unanimous with preset loudness or its difference be in the regulation scope.
Preferably, in step S3, the adjusting of the sound signal includes increasing the voltage of the sound signal, decreasing the voltage of the sound signal, increasing the frequency of the sound signal, and decreasing the frequency of the sound signal.
By adjusting the voltage and frequency of the sound signal, the sound pressure level and frequency of the loudspeaker during sounding can be adjusted, and therefore the loudness of the loudspeaker is adjusted.
Preferably, step S4 is further included after step S3: the collecting device collects vibration information of a vibrating diaphragm of the loudspeaker after the sound signal is adjusted, the digital signal processor calculates the actual loudness of the loudspeaker according to the vibration information collected again by the collecting device, then the actual loudness is compared with the preset loudness, if the difference between the actual loudness and the preset loudness exceeds the specified range, the step S2 is returned, and if the difference between the actual loudness and the preset loudness is within the specified range, the adjustment is finished.
The invention can adjust the loudness of the loudspeaker for multiple times so as to ensure the accuracy of the adjusting result.
Preferably, the acquisition device comprises a laser transmitter and a laser receiver connected with the digital signal processor.
Laser emitter transmission laser is to the dust cover on the loudspeaker, and the dust cover reflects laser to laser receiver, can estimate out the vibration range of the vibrating diaphragm of installing the dust cover and the vibration cycle in the unit interval to can estimate out the vibration frequency and the vibration range of vibrating diaphragm.
The utility model provides a loudspeaker of adjustable loudness, includes the loudspeaker body, the loudspeaker body includes T iron, magnet, magnetic conductive plate, cone, voice coil loudspeaker voice coil, centering support piece, vibrating diaphragm and dust cover, T iron orientation the tip of the one end of dust cover is provided with the mounting groove, be provided with collection system in the mounting groove, still include digital signal processor, power amplifier and collection system, digital signal processor with power amplifier and collection system connect, the power amplifier with this body coupling of loudspeaker.
The T iron comprises a supporting part and a stand column arranged on a supporting plate, the end part of the stand column on the T iron is provided with a mounting groove for mounting an acquisition device, the acquisition device comprises a laser transmitter and a laser receiver, the supporting part is sequentially and fixedly provided with a magnet and a magnetic conduction plate, the stand column is movably sleeved with a voice coil, the voice coil is cylindrical, the magnet and the magnetic conduction plate are arranged around the voice coil, the magnetic conduction plate is provided with a cone, the cone is bowl-shaped, the bottom of the cone is provided with a through hole for the voice coil to pass through, part of the voice coil passes through the through hole and enters the cone, the cone is also internally provided with a vibrating diaphragm, the vibrating diaphragm is bowl-shaped with an opening at the lower end, the edge of the opening at the upper end of the vibrating diaphragm is fixedly connected with the edge of the opening at the upper end of the cone, the edge of, the dust cover sets up in the lower part of vibrating diaphragm, and the edge of dust cover and the inside wall fixed connection of vibrating diaphragm, the bottom of cone still is provided with the centering piece, and the centering piece is the ring-type, and the inboard and the voice coil loudspeaker voice coil outside of centering piece offset, and the inboard and the voice coil loudspeaker voice coil outside slidable ground connection of centering piece for inject the voice coil loudspeaker voice coil and remove along the central line direction of voice coil loudspeaker voice coil.
Wherein, the laser emitter emits laser to the dust cover on the loudspeaker, the dust cover reflects the laser to the laser receiver, the vibration amplitude of the vibrating diaphragm provided with the dust cover and the vibration period in unit time can be measured, thereby the vibration frequency and the vibration amplitude of the vibrating diaphragm can be measured, the acquisition device transmits the vibration information including the amplitude and the vibration frequency of the vibrating diaphragm to the digital signal processor after acquiring the vibration information of the vibrating diaphragm, the digital signal processor receives the vibration information transmitted by the acquisition information, the actual loudness sent by the loudspeaker can be calculated, then the actual loudness is compared with the preset loudness of the loudspeaker, the digital signal processor adjusts the voltage and the frequency of the sound signal according to the difference between the actual loudness and the preset loudness, thereby the purpose of adjusting the actual loudness is achieved, the difference is eliminated, and the actual loudness is consistent with the preset loudness or the difference is in a specified range, therefore, the size error of each part in the production process of the loudspeaker and the sound production error caused by the loss of each part in the use process are eliminated.
Preferably, the dust cover includes an irradiation portion provided perpendicular to a center line of the voice coil.
Laser emitter transmission laser in the mounting groove shines on the portion of shining, then the portion of shining reflects laser to laser receiver, and the perpendicular voice coil's of portion of shining central line setting can guarantee that laser is smoothly reflected back the mounting hole and is detected by laser receiver.
Preferably, the mounting groove is disposed through the T-iron.
The space between dust cover and the voice coil loudspeaker voice coil passes through mounting groove and external environment intercommunication to can carry out the air exchange with the external world, reach quick radiating effect.
Preferably, the magnet and the magnetic conduction plate are both annular, and the upright post is positioned on the inner sides of the magnet and the magnetic conduction plate.
Preferably, the magnet is a permanent magnet.
The principle and effect of the present invention will be further explained by combining the above technical solutions:
in the invention, the acquisition device can acquire vibration information including the amplitude and the vibration frequency of the vibrating diaphragm, the digital signal processor can calculate the actual loudness sent by the loudspeaker after receiving the vibration information sent by the acquisition information, and then compares the actual loudness with the preset loudness of the loudspeaker, and the digital signal processor adjusts the voltage and the frequency of the sound signal according to the difference between the actual loudness and the preset loudness, thereby achieving the purpose of adjusting the actual loudness to eliminate the difference, so that the actual loudness is consistent with the preset loudness or the difference is in a specified range, and further eliminating the size error of each component of the loudspeaker in the production process and the sounding error generated by the loss of each component in the use process.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a horn according to an embodiment of the present invention.
Description of reference numerals:
11-supporting part, 12-upright post, 13-mounting groove, 2-magnet, 3-magnetic conduction plate, 4-cone, 5-vibrating diaphragm, 6-dust cover, 7-voice coil.
Detailed Description
For the convenience of understanding of those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and examples:
referring to fig. 1, a method for adjusting the loudness of a horn includes the following steps:
s1, the signal source sends the sound signal to the digital signal processor, the digital signal processor sends the processed sound signal to the power amplifier, the power amplifier amplifies the sound signal and transmits the amplified sound signal to the loudspeaker, and the loudspeaker produces sound;
s2, collecting vibration information of a vibrating diaphragm 5 of the loudspeaker during sounding by a collecting device, sending the collected vibration information to a digital signal processor, analyzing and processing the vibration information by the digital signal processor, and calculating the actual loudness corresponding to the vibration information;
and S3, the digital signal processor compares the actual loudness with the preset loudness, and then performs targeted adjustment on the sound signal according to the comparison result.
Wherein, collection system can gather vibration information and include the amplitude and the vibration frequency of vibrating diaphragm 5, digital signal processor receives after the vibration information that information acquisition sent and come, can calculate the actual loudness that loudspeaker sent, then compare its preset loudness with loudspeaker, digital signal processor adjusts sound signal's voltage and frequency according to the difference of actual loudness with preset loudness, thereby reach the purpose of adjusting actual loudness, in order to eliminate this difference, thereby make actual loudness unanimous with preset loudness or its difference be in the regulation scope, thereby eliminate loudspeaker in the production process the dimensional error of each part and the loss production sound production error of each part in the use.
In one embodiment, the adjusting of the sound signal in step S3 includes increasing the voltage of the sound signal, decreasing the voltage of the sound signal, increasing the frequency of the sound signal, and decreasing the frequency of the sound signal.
By adjusting the voltage and frequency of the sound signal, the sound pressure level and frequency of the loudspeaker during sounding can be adjusted, and therefore the loudness of the loudspeaker is adjusted.
In one embodiment, the step S3 is followed by the step S4: the collecting device collects vibration information of the vibrating diaphragm 5 of the loudspeaker after the sound signal is adjusted, the digital signal processor calculates the actual loudness of the loudspeaker according to the vibration information collected again by the collecting device, then the actual loudness is compared with the preset loudness, if the difference between the actual loudness and the preset loudness exceeds the specified range, the step S2 is returned, and if the difference between the actual loudness and the preset loudness is within the specified range, the adjustment is finished.
The invention can adjust the loudness of the loudspeaker for multiple times so as to ensure the accuracy of the adjusting result.
In one embodiment, the acquisition device comprises a laser transmitter and a laser receiver connected to a digital signal processor.
Laser emitter transmission laser is to dust cover 6 on the loudspeaker, and dust cover 6 reflects laser to laser receiver, can estimate out the vibration amplitude and the vibration cycle in the unit interval of the vibrating diaphragm 5 that installs dust cover 6 to can estimate out the vibration frequency and the vibration amplitude of vibrating diaphragm 5.
The utility model provides a loudspeaker of adjustable loudness, includes the loudspeaker body, the loudspeaker body includes T iron, magnet 2, magnetic conductive plate 3, cone 4, voice coil loudspeaker voice coil 7, centring disk, vibrating diaphragm 5 and dust cover 6, the T iron orientation the tip of the one end of dust cover 6 is provided with mounting groove 13, be provided with collection system in the mounting groove 13, still include digital signal processor, power amplifier and collection system, digital signal processor with power amplifier and collection system connect, the power amplifier with this body coupling of loudspeaker.
The T iron comprises a supporting part 11 and a stand column 12 arranged on the supporting plate, the end part of the stand column 12 on the T iron is provided with a mounting groove 13 for mounting an acquisition device, the acquisition device comprises a laser transmitter and a laser receiver, the supporting part 11 is sequentially and fixedly provided with a magnet 2 and a magnetic conductive plate 3, the stand column 12 is movably sleeved with a voice coil 7, the voice coil 7 is cylindrical, the magnet 2 and the magnetic conductive plate 3 are both arranged around the voice coil 7, the magnetic conductive plate 3 is provided with a cone 4, the cone 4 is bowl-shaped, the bottom of the cone 4 is provided with a through hole for the voice coil 7 to pass through, part of the voice coil 7 passes through the through hole and enters the cone 4, the cone 4 is also internally provided with a vibrating diaphragm 5, the vibrating diaphragm 5 is bowl-shaped with an open lower end, the edge of the open upper end of the vibrating diaphragm 5 is fixedly connected with the edge of the open end of the, and have the clearance between vibrating diaphragm 5 and cone 4, vibrating diaphragm 5 inboard still is provided with dust cover 6, dust cover 6 sets up in the lower part of vibrating diaphragm 5, and the edge of dust cover 6 and the inside wall fixed connection of vibrating diaphragm 5, the bottom of cone 4 still is provided with the centering piece, the centering piece is cyclic annular, the inboard and the voice coil loudspeaker voice coil 7 outside of centering piece offset, and the inboard and the voice coil loudspeaker voice coil 7 outside slidable of centering piece are connected for inject voice coil loudspeaker voice coil 7 and remove along the central line direction of voice coil loudspeaker voice coil 7.
Wherein, collection system can gather vibration information and include the amplitude and the vibration frequency of vibrating diaphragm 5, digital signal processor receives after the vibration information that information acquisition sent and come, can calculate the actual loudness that loudspeaker sent, then compare its preset loudness with loudspeaker, digital signal processor adjusts sound signal's voltage and frequency according to the difference of actual loudness with preset loudness, thereby reach the purpose of adjusting actual loudness, in order to eliminate this difference, thereby make actual loudness unanimous with preset loudness or its difference be in the regulation scope, thereby eliminate loudspeaker in the production process the dimensional error of each part and the loss production sound production error of each part in the use.
Wherein, when collection system gathered the vibration information of vibrating diaphragm, laser emitter transmission laser arrived dust cover 6 on the loudspeaker, and dust cover 6 reflects laser to laser receiver, can calculate the vibration range of the vibrating diaphragm 5 of installing dust cover 6 and the vibration cycle in the unit interval to can calculate the vibration frequency and the vibration range of vibrating diaphragm 5.
In one embodiment, the dust cover 6 includes an irradiation portion disposed perpendicular to a center line of the voice coil 7.
Laser emitter in the mounting groove sends laser irradiation on the portion of shining, then the portion of shining reflects laser to laser receiver, and the perpendicular voice coil's of portion of shining central line setting can guarantee that laser is smoothly reflected back mounting hole 13 and is detected by laser receiver.
In one embodiment, the mounting slot 13 is disposed through the T-bar.
The space between the dust cover 6 and the voice coil 7 is communicated with the external environment through the mounting groove 13, so that air exchange can be carried out with the outside, and the effect of rapid heat dissipation is achieved.
In one embodiment, the magnet 2 and the magnetic conductive plate 3 are both annular, and the column 12 is located inside the magnet 2 and the magnetic conductive plate 3.
In one embodiment, the magnet 2 is a permanent magnet.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A method for adjusting the loudness of a horn is characterized by comprising the following steps:
s1, the signal source sends the sound signal to the digital signal processor, the digital signal processor sends the processed sound signal to the power amplifier, the power amplifier amplifies the sound signal and transmits the amplified sound signal to the loudspeaker, and the loudspeaker produces sound;
s2, collecting vibration information of a vibrating diaphragm of the loudspeaker during sounding by a collecting device, sending the collected vibration information to a digital signal processor, analyzing and processing the vibration information by the digital signal processor, and calculating the actual loudness corresponding to the vibration information;
and S3, the digital signal processor compares the actual loudness with the preset loudness, and then performs targeted adjustment on the sound signal according to the comparison result.
2. The method of claim 1, wherein the step S3 includes increasing the voltage of the sound signal, decreasing the voltage of the sound signal, increasing the frequency of the sound signal, and decreasing the frequency of the sound signal.
3. The method for adjusting horn loudness of claim 1, wherein step S3 is followed by step S4: the collecting device collects vibration information of a vibrating diaphragm of the loudspeaker after the sound signal is adjusted, the digital signal processor calculates the actual loudness of the loudspeaker according to the vibration information collected again by the collecting device, then the actual loudness is compared with the preset loudness, if the difference between the actual loudness and the preset loudness exceeds the specified range, the step S2 is returned, and if the difference between the actual loudness and the preset loudness is within the specified range, the adjustment is finished.
4. The method of claim 1, wherein the acquisition device comprises a laser transmitter and a laser receiver coupled to a digital signal processor.
5. A loudspeaker with adjustable loudness comprises a loudspeaker body, wherein the loudspeaker body comprises T iron, a magnet, a magnetic conductive plate, a cone, a voice coil, a centering support sheet, a vibrating diaphragm and a dust cover; still include digital signal processor, power amplifier and collection system, digital signal processor with power amplifier and collection system connect, the power amplifier with this body coupling of loudspeaker.
6. The adjustable loudness horn of claim 5, wherein the dust shield comprises an illumination disposed perpendicular to a centerline of the voice coil.
7. The adjustable loudness horn of claim 5, wherein the mounting slot is disposed through the T-iron.
8. The adjustable loudness loudspeaker of claim 5, wherein the magnet and the magnetically conductive plate are both annular, and the post is located inside the magnet and the magnetically conductive plate.
9. The adjustable loudness horn of claim 5, wherein the magnet is a permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910931282.XA CN110769350A (en) | 2019-09-29 | 2019-09-29 | Method for adjusting loudness of loudspeaker and loudspeaker |
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| CN201910931282.XA CN110769350A (en) | 2019-09-29 | 2019-09-29 | Method for adjusting loudness of loudspeaker and loudspeaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111800727A (en) * | 2020-07-30 | 2020-10-20 | 歌尔科技有限公司 | Sound box and loudspeaker control device and loudspeaker control method thereof |
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| CN111800727B (en) * | 2020-07-30 | 2021-10-26 | 歌尔科技有限公司 | Sound box and loudspeaker control device and loudspeaker control method thereof |
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