CN115509272A - Low-frequency vibration device and control method for controlling frequency and intensity respectively - Google Patents
Low-frequency vibration device and control method for controlling frequency and intensity respectively Download PDFInfo
- Publication number
- CN115509272A CN115509272A CN202211183156.9A CN202211183156A CN115509272A CN 115509272 A CN115509272 A CN 115509272A CN 202211183156 A CN202211183156 A CN 202211183156A CN 115509272 A CN115509272 A CN 115509272A
- Authority
- CN
- China
- Prior art keywords
- frequency
- low
- vibration
- signal
- intensity
- 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
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 description 11
- 230000006870 function Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D19/00—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase
- G05D19/02—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase characterised by the use of electric means
Abstract
The invention discloses a low-frequency vibration device and a control method for respectively controlling frequency and intensity, which relate to the technical field of vibration control, and the method comprises the following steps: acquiring a section of continuous low-frequency signals and storing the continuous low-frequency signals to form an audio file; calling part of low-frequency signals in the audio file to form low-frequency signal segments; decoding the low-frequency signal segment to form a digital signal; performing digital-to-analog conversion on the digital signal to form an analog signal; performing gain processing on the analog signal to form an amplified analog signal; receiving the amplified analog signal and generating a vibration. The audio file is sequentially converted into a digital signal and an analog signal, vibration is generated in the vibration unit after gain processing, the frequency of the vibration is proportional to the frequency of the low-frequency signal, so that the smooth control of the vibration frequency is realized, and the strength of the vibration is proportional to the strength of the gain, so that the control of the strength is realized; thus, the vibration frequency and the intensity of the vibration can be respectively controlled.
Description
Technical Field
The invention relates to the technical field of vibration control, in particular to a low-frequency vibration device and a control method for controlling frequency and intensity respectively.
Background
Vibration is a common interaction mode in wearable devices, such as vibration prompting in smart watches, and the vibration function of some massage-type devices. The conventional vibration function is realized by a vibration motor, and the control principle is as follows: the CPU opens and closes the controllable switch through the controllable PWM signal to realize the control of the voltage at two ends of the direct current motor, thereby controlling the rotating speed of the motor and obtaining different vibration effects. The vibration effect mainly comprises the vibration speed (vibration frequency) and the vibration strength. The vibration effect (directly related to the motor excitation voltage) is realized by different motor rotating speeds caused by different duty ratios of switching interval signals of the CPU, and the higher the voltage is, the faster the vibration is and the vibration strength in sense is also large. Therefore, the vibration frequency and the vibration amplitude are associated, the frequency and the intensity cannot be accurately controlled independently, and the vibration effect granularity is large in the control mode and the user experience is not fine and smooth enough for the human body wearable equipment which mainly uses human body touch perception experience.
Disclosure of Invention
Therefore, the invention provides a low-frequency vibration device and a control method for respectively controlling frequency and intensity, and aims to solve the problem that in the prior art, the frequency and the intensity cannot be accurately and independently controlled due to the fact that the vibration effect is controlled by voltage.
In order to achieve the above purpose, the invention provides the following technical scheme:
a first aspect of the present invention provides a control method of low-frequency vibration in which frequency and intensity are controlled separately, including:
acquiring a section of continuous low-frequency signals and storing the continuous low-frequency signals to form an audio file;
calling part of low-frequency signals in an audio file to form a low-frequency signal segment;
decoding the low-frequency signal segment to form a digital signal;
performing digital-to-analog conversion on the digital signal to form an analog signal;
performing gain processing on the analog signal to form an amplified analog signal;
receiving the amplified analog signal and generating a vibration, wherein the vibration has a frequency proportional to the frequency of the low frequency signal segment and an intensity proportional to the intensity of the gain.
Furthermore, the frequency of the low-frequency signal is 3-100hz, the low-frequency signal is generated by the signal generating device and is stored in an audio format, and therefore an audio file containing a section of the low-frequency signal is formed.
Further, the forming the low-frequency signal segment includes the following steps:
acquiring external input information;
forming vibration frequency demand information based on external input information;
forming a low-frequency signal calling instruction based on the vibration frequency demand information;
and selecting the corresponding low-frequency signal segment based on a low-frequency signal calling instruction.
Further, the gain control of the analog signal includes the following steps:
acquiring external input information;
forming intensity requirement information based on the external input information;
forming a gain control instruction based on the intensity requirement information;
and performing gain processing on the analog signal based on the gain control instruction.
Further, the receiving and amplifying of the analog signal and the generation of the vibration are performed by a vibrator, which is a moving coil type horn with a paper disc vibrating diaphragm removed and a vibrating coil reinforced.
A second aspect of the present invention provides a low-frequency vibration device with frequency and intensity controlled respectively, for implementing the control method according to the first aspect of the present invention, including:
the storage unit is used for acquiring a section of low-frequency signal and storing the low-frequency signal in an audio format to form an audio file;
a processing unit; the low-frequency signal section is used for calling part of the low-frequency signals in the storage unit to form low-frequency signal sections; decoding the low-frequency signal segment to form a digital signal; performing gain control on the gain unit;
a conversion unit; the digital-to-analog conversion circuit is used for performing digital-to-analog conversion on the digital signal to form an analog signal;
a gain unit; the gain control unit is used for receiving a gain control instruction of the processing unit and performing gain processing on the analog signal to form an amplified analog signal;
a vibration unit; for receiving the amplified analog signal and generating a vibration having a frequency proportional to the frequency of the low frequency signal segment and an intensity proportional to the intensity of the gain control.
Further, the frequency of the low-frequency signal is 3-100hz and is generated by the signal generating device.
Further, the low-frequency vibration device further comprises an input unit, wherein the input unit is used for acquiring and acquiring external input information; the processing unit is further used for forming vibration frequency demand information based on external input information, forming a low-frequency signal calling instruction based on the vibration frequency demand information, selecting a corresponding low-frequency signal segment based on the low-frequency signal calling instruction, forming intensity demand information based on the external input information, and forming a gain control instruction based on the intensity demand information.
Further, the vibration unit is a moving coil type loudspeaker which removes a paper disc vibration film and strengthens a vibration coil at the same time.
The invention has the following advantages:
and calling a low-frequency signal in the audio file, sequentially converting the low-frequency signal into a digital signal and an analog signal, and generating vibration in a vibrator or a vibration unit after gain processing. The frequency of the vibration is proportional to the frequency of the low-frequency signal (such as 1:1 or m: n), and the low-frequency signal is continuous, so that the smooth control of the vibration frequency is realized; the intensity of this vibration is proportional to the intensity of the gain (e.g., 1:1 or m: n), enabling control of the intensity. So can control the vibration frequency and the intensity of vibration respectively, if use in wearing equipment, can refine the granularity of vibrations effect, promote user experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.
Fig. 1 is a flowchart of a method for controlling low-frequency vibration by controlling frequency and intensity, respectively, according to an embodiment of the present invention;
fig. 2 is an electrical control schematic diagram of a low-frequency vibration device for controlling frequency and intensity respectively according to an embodiment of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
As shown in fig. 1, embodiment 1 provides a control method of low-frequency vibration in which frequency and intensity are controlled separately, including the following steps.
Step S1, a section of continuous low-frequency signals is obtained and stored to form an audio file. The low frequency signal has a frequency of 3-100hz, is generated by the signal generating device and is stored in an audio format, thereby forming an audio file containing a section of low frequency signal which continuously rises from 3hz to 100 hz.
And S2, calling part of low-frequency signals in the audio file to form a low-frequency signal segment. In this step, the following steps are performed: step S21, obtaining external input information; step S22, forming vibration frequency demand information based on external input information; step S23, forming a low-frequency signal calling instruction based on the vibration frequency demand information; and S24, selecting the corresponding low-frequency signal segment based on the low-frequency signal calling instruction. For example, a proximity sensor (a type of distance sensor) on the wearable device is slightly less distant in a process of approaching a corresponding target in an environment, and at this time, the proximity sensor serves as an input unit and transmits distance information as external input information to a processing unit (a chip or a processor); generally, the closer the audio file is, the faster the vibration is needed, at this time, the processing unit may generate vibration frequency requirement information according to the distance, for example, when the distance is 1m, the vibration frequency is at 5hz, which is vibration frequency requirement information, and as the distance decreases, the vibration frequency is increased by 1hz every time the distance decreases, a low-frequency signal corresponding to the point of 5hz in the audio file is called as a starting point according to the vibration frequency requirement information, and as the distance decreases, a (5+N) hz segment is called in sequence, and the vibration unit or the vibrator generates continuously changing vibration of 5- (5+N) hz, thus realizing smooth adjustment of the vibration frequency.
And S3, decoding the low-frequency signal segment to form a digital signal.
And S4, performing digital-to-analog conversion on the digital signal to form an analog signal.
And S5, performing gain processing on the analog signal to form an amplified analog signal. In this step, the following steps are performed: step S51, obtaining external input information; step S52, forming strength requirement information based on external input information; step S53, forming a gain control instruction based on the strength requirement information; in step S54, gain processing is performed on the analog signal based on the gain control command. Similar to step S2, for example, a proximity sensor (a type of distance sensor) on the wearable device is slightly less distant during approaching to a corresponding target in the environment, and at this time, the proximity sensor serves as an input unit and transmits distance information as external input information to a processing unit (a chip or a processor); generally, the closer the vibration is, the stronger the vibration is, at this time, the processing unit may generate intensity requirement information according to the distance, for example, when the distance is 1m apart, the intensity is at 10 energy levels, which is the intensity requirement information, and as the distance decreases, the intensity is increased by 1 energy level every time a certain distance is decreased, the processing unit generates a gain control instruction (start instruction) corresponding to 10 energy levels according to the intensity requirement information, and as the distance decreases, sequentially generates gain control instructions of (10 + m) energy level hz segments to form a continuously-enhanced gain control instruction, the gain unit receives the gain control instruction and then performs corresponding gain control (generally amplification), and the vibration unit or the vibrator generates vibration of the corresponding energy level according to the amplified analog signal after gain, thereby implementing adjustment of the amplitude.
And S6, receiving the amplified analog signal and generating vibration, wherein the vibration frequency of the vibration is proportional to the frequency of the low-frequency signal segment, and the strength of the vibration is proportional to the strength of the gain. Receiving the amplified analog signal and generating vibration is completed by a vibrator, wherein the vibrator is a moving coil type loudspeaker which removes a paper disc vibrating diaphragm and strengthens a vibrating coil. Because the paper disc vibrating diaphragm is removed, the loudspeaker cannot produce sound; due to the reinforced vibration ring, the vibration capability of the horn is enhanced, so that the horn can be used as a vibration unit or a vibrator in products such as wearing equipment.
The present embodiment further provides a low frequency vibration device for controlling frequency and intensity, respectively, to implement the above control method, as shown in fig. 2, including a storage unit 10, a processing unit 20, a conversion unit 30, a gain unit 40, and a vibration unit 50. The functions and connection relationships of the constituent units in the wearable device will be described below, and the proximity sensor of the wearable device is used as an input unit 60.
The storage unit 10 is used for acquiring a segment of low-frequency signals and storing the low-frequency signals in an audio format to form an audio file. A typical audio file is for generating sound, and the frequency of an audio signal is usually between 20hz and 20 khz; however, in this embodiment, the low-frequency vibration device mainly generates a vibration effect, so that a low-frequency signal between 3hz and 100hz is used, the signal is generated by a specific signal generating device, a general audio format (such as wav or mp 3) is stored in the storage unit 10 (a single chip or an external memory, a chip is integrated with the storage unit 10 such as a DDR (double data rate synchronous dynamic random access memory) and a FLASH memory), and a cpu master frequency is above 100 MHz).
The processing unit 20 is electrically connected to the input unit 60 (such as the proximity sensor mentioned above) and the storage unit 10, and is configured to call up a part of the low-frequency signals in the storage unit 10 to form a low-frequency signal segment; decoding the low-frequency signal segment to form a digital signal; when the low-frequency signal segment is formed, the processing unit 20 is further configured to form vibration frequency demand information based on external input information, form a low-frequency signal calling instruction based on the vibration frequency demand information, and select the corresponding low-frequency signal segment based on the low-frequency signal calling instruction. The processing unit 20 is also electrically connected to the gain unit 40, and is configured to form intensity requirement information based on external input information, form a gain control instruction based on the intensity requirement information, send the gain control instruction to the gain unit 40, and perform gain control on the gain unit 40.
The conversion unit 30 is electrically connected to the processing unit 20, and is configured to perform digital-to-analog conversion on the digital signal to form an analog signal. The conversion unit 30 may employ a Codec (Codec), which may be omitted if the CPU incorporates a DAC function. The CPU and the codec communicate via an I2C/I2S interface. CPU decodes the audio file and outputs a digital signal, and codec converts the digital signal to an analog signal
The gain unit 40 is electrically connected to the conversion unit 30 and the processing unit 20, and is configured to receive a gain control instruction from the processing unit 20 and perform gain processing on the analog signal to form an amplified analog signal. Because the signal generated by the CPU is weak and is not enough to drive the horn to vibrate, an amplifier is required to be added for gain control. Because the front end adopts the audio-like format, the amplifier can also use a universal audio amplification chip, thereby greatly reducing the power consumption and the cost of the device and improving the universality of the device. Meanwhile, the CPU can directly adjust the output power gain of the amplifying chip, so that the vibration strength effect of the device is adjusted, and the device is more direct and effective compared with the traditional vibration mode.
The vibration unit 50 is electrically connected to the presentation unit for receiving the amplified analog signal and generating a vibration having a frequency proportional to the frequency of the low frequency signal segment and an intensity proportional to the intensity of the gain control. The vibration unit 50 is a moving coil type horn in which a paper tray diaphragm is removed and a diaphragm is reinforced, and the generated vibration is transmitted to the apparatus through the bracket. Optionally, the vibration horn is bonded on the outer wall of the equipment through high-viscosity double-faced adhesive tape or glue, and the driving device is driven to vibrate at the same frequency when the horn vibrates, so that controllable vibration frequency and amplitude are achieved. The vibration horn needs to be modified from the traditional audio horn, but keeps the basic theme function of the moving-coil horn, and the process is also a controllable process in the manufacturing of the horn, so that the vibration horn can be obtained at low cost without influencing the overall realizability of the device.
Generally, the modification of a general audio processing mode realizes the smooth control of the vibration frequency through customizing a low-frequency playing file, and simultaneously realizes the vibration strength control through gain control, so that the vibration function of the device is controllable, and the vibration experience of the device is improved. The device using the method or the device can directly express the vibration effect through digitalization, the vibration effect can be flexibly edited before use, and the consistency is good when the vibration effect is repeatedly used.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. A method for controlling low frequency vibration of controlled frequency and intensity, respectively, comprising:
acquiring a section of continuous low-frequency signals and storing the continuous low-frequency signals to form an audio file;
calling part of low-frequency signals in an audio file to form a low-frequency signal segment;
decoding the low-frequency signal segment to form a digital signal;
performing digital-to-analog conversion on the digital signal to form an analog signal;
performing gain processing on the analog signal to form an amplified analog signal;
receiving the amplified analog signal and generating a vibration, wherein the vibration has a frequency proportional to the frequency of the low frequency signal segment and an intensity proportional to the intensity of the gain.
2. A method for controlling low frequency vibrations with separate control of frequency and intensity as claimed in claim 1, characterized in that the frequency of the low frequency signal is 3-100hz, generated by the signal generating means, and stored in audio format, thus forming an audio file containing a segment of the low frequency signal.
3. The method for controlling low frequency vibration according to claim 1, wherein said forming low frequency signal segment comprises the steps of:
acquiring external input information;
forming vibration frequency demand information based on external input information;
forming a low-frequency signal calling instruction based on the vibration frequency demand information;
and selecting the corresponding low-frequency signal segment based on a low-frequency signal calling instruction.
4. The method for controlling low frequency vibration according to claim 1, wherein said gain controlling of the analog signal comprises the steps of:
acquiring external input information;
forming intensity requirement information based on the external input information;
forming a gain control instruction based on the intensity requirement information;
and performing gain processing on the analog signal based on the gain control instruction.
5. A method for controlling low frequency vibrations with separate control of frequency and intensity as claimed in claim 1, wherein said receiving of amplified analog signals and generating of vibrations is done by a vibrator, which is a moving coil type horn with a paper disc diaphragm removed and a diaphragm reinforced.
6. A low frequency vibration device for controlling frequency and intensity, respectively, for implementing the control method of any one of claims 1 to 5, comprising:
the storage unit is used for acquiring a section of low-frequency signal and storing the low-frequency signal in an audio format to form an audio file;
a processing unit; the device is used for calling part of low-frequency signals in the audio file from the storage unit to form low-frequency signal segments; decoding the low-frequency signal segment to form a digital signal; performing gain control on the gain unit;
a conversion unit; the digital-to-analog conversion circuit is used for performing digital-to-analog conversion on the digital signal to an analog signal;
a gain unit; the gain control unit is used for receiving a gain control instruction of the processing unit and performing gain processing on the analog signal to form an amplified analog signal;
a vibration unit; for receiving the amplified analog signal and generating vibrations having a frequency proportional to the frequency of the low frequency signal segment and an intensity proportional to the intensity of the gain control.
7. A low frequency vibratory device with separate control of frequency and intensity as set forth in claim 6 wherein said low frequency signal has a frequency of 3-100hz and is generated by signal generating means.
8. The low-frequency vibration device for controlling frequency and intensity respectively according to claim 6, further comprising an input unit for acquiring external input information; the processing unit is further used for forming vibration frequency demand information based on external input information, forming a low-frequency signal calling instruction based on the vibration frequency demand information, selecting a corresponding low-frequency signal segment based on the low-frequency signal calling instruction, forming intensity demand information based on the external input information, and forming a gain control instruction based on the intensity demand information.
9. A low frequency vibratory device with frequency and intensity control as in claim 6 wherein the vibratory unit is a moving coil speaker with a diaphragm of paper disk removed and a diaphragm reinforced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211183156.9A CN115509272A (en) | 2022-09-27 | 2022-09-27 | Low-frequency vibration device and control method for controlling frequency and intensity respectively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211183156.9A CN115509272A (en) | 2022-09-27 | 2022-09-27 | Low-frequency vibration device and control method for controlling frequency and intensity respectively |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115509272A true CN115509272A (en) | 2022-12-23 |
Family
ID=84505661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211183156.9A Pending CN115509272A (en) | 2022-09-27 | 2022-09-27 | Low-frequency vibration device and control method for controlling frequency and intensity respectively |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115509272A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85204340U (en) * | 1985-10-11 | 1987-06-24 | 刘瑞 | Displaying system of audio indication cassette door for cassette recorder |
| CN101729625A (en) * | 2010-01-05 | 2010-06-09 | 青岛海信移动通信技术股份有限公司 | Method for driving motor of mobile phone and mobile equipment |
| KR20120066388A (en) * | 2010-12-14 | 2012-06-22 | 이상석 | Stimulating apparatus for acupuncture point using portable audio equipment |
| US20130041297A1 (en) * | 2010-11-10 | 2013-02-14 | Orsi R. Garcia | Wireless massage, heating and lift system |
| US20180243163A1 (en) * | 2013-03-15 | 2018-08-30 | Sambhu Choudhury | Garment with remote controlled vibration array |
| CN110368284A (en) * | 2019-07-01 | 2019-10-25 | 宁波磁性材料应用技术创新中心有限公司 | A kind of vibromassage mask |
| CN111939035A (en) * | 2020-07-20 | 2020-11-17 | 复旦大学 | Portable transcranial music vibration stimulation generation device |
| CN113198106A (en) * | 2021-04-01 | 2021-08-03 | 未来穿戴技术有限公司 | Control method and device of wearable massage instrument and wearable massage instrument |
-
2022
- 2022-09-27 CN CN202211183156.9A patent/CN115509272A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85204340U (en) * | 1985-10-11 | 1987-06-24 | 刘瑞 | Displaying system of audio indication cassette door for cassette recorder |
| CN101729625A (en) * | 2010-01-05 | 2010-06-09 | 青岛海信移动通信技术股份有限公司 | Method for driving motor of mobile phone and mobile equipment |
| US20130041297A1 (en) * | 2010-11-10 | 2013-02-14 | Orsi R. Garcia | Wireless massage, heating and lift system |
| KR20120066388A (en) * | 2010-12-14 | 2012-06-22 | 이상석 | Stimulating apparatus for acupuncture point using portable audio equipment |
| US20180243163A1 (en) * | 2013-03-15 | 2018-08-30 | Sambhu Choudhury | Garment with remote controlled vibration array |
| CN110368284A (en) * | 2019-07-01 | 2019-10-25 | 宁波磁性材料应用技术创新中心有限公司 | A kind of vibromassage mask |
| CN111939035A (en) * | 2020-07-20 | 2020-11-17 | 复旦大学 | Portable transcranial music vibration stimulation generation device |
| CN113198106A (en) * | 2021-04-01 | 2021-08-03 | 未来穿戴技术有限公司 | Control method and device of wearable massage instrument and wearable massage instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3344385B2 (en) | Vibration source drive | |
| CN201234277Y (en) | Mobile phone display screen | |
| CN106341760B (en) | Coaxial moving-coil speaker and earphone | |
| JP2002027028A (en) | Information communication equipment | |
| KR101233004B1 (en) | Polyphonic sound generating method | |
| CN201663681U (en) | Cone paper and loudspeaker provided with same | |
| CN115509272A (en) | Low-frequency vibration device and control method for controlling frequency and intensity respectively | |
| WO2021043016A1 (en) | Electronic apparatus and sound emission control method thereof | |
| CN203504729U (en) | Portable audio device | |
| CN206042355U (en) | Ball top high pitch loudspeaker | |
| CN201663686U (en) | Speaker in multi-diaphragm structure | |
| CN113079441A (en) | Loudspeaker and terminal equipment | |
| CN203896502U (en) | Piezoelectric loudspeaker | |
| JPH11341584A (en) | Speaker device | |
| CN113876487A (en) | Eye mask implementation method with eye massage and music appreciation functions and eye mask | |
| JP2003236467A (en) | Vibration actuator and electroacoustic transducer | |
| CN110677788B (en) | Sound production module and electronic equipment | |
| CN204272377U (en) | One can use galvanic loud speaker | |
| CN204669602U (en) | Speech recognition equipment, voice sound system and speech communication system | |
| CN209218406U (en) | A kind of voice coil concave surface vibration amplifying device | |
| CN201118953Y (en) | Novel ultra-high frequency speaker | |
| CN207491201U (en) | A kind of Multifunctional camera loud speaker | |
| JP2018064198A (en) | Electroacoustic conversion method, vibration element driving method, and devices thereof | |
| KR20230020376A (en) | sound lamp speaker | |
| CN117294992A (en) | PVDF membrane loudspeaker box |
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 |