CN113783985A - Electronic equipment and shell thereof - Google Patents
Electronic equipment and shell thereof Download PDFInfo
- Publication number
- CN113783985A CN113783985A CN202111241268.0A CN202111241268A CN113783985A CN 113783985 A CN113783985 A CN 113783985A CN 202111241268 A CN202111241268 A CN 202111241268A CN 113783985 A CN113783985 A CN 113783985A
- Authority
- CN
- China
- Prior art keywords
- channel
- main channel
- sound
- mic
- housing
- 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
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 238000013016 damping Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 13
- 239000012528 membrane Substances 0.000 abstract description 11
- 238000013461 design Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000010267 cellular communication Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
- H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
-
- 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
- H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for telephonic receivers
-
- 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
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
Abstract
The application provides an electronic device and a shell thereof; a pickup channel of a microphone is arranged in the shell, and the pickup channel comprises a main channel and a side branch filtering cavity; one end of the main channel is a sound inlet, and the other end of the main channel is arranged corresponding to the microphone; the side branch filtering cavity is communicated with the main channel and used for carrying out resonance filtering on the sound wave signals passing through the main channel. The casing that this application embodiment provided has designed an MIC pickup channel that contains side branch filtering resonant cavity, compares in ordinary acoustic duct, and this scheme effectively restraines the influence of acoustic duct resonance to complete machine MIC frequency response curve, when playing MIC protection (prevent rupture of membranes) effect, has still guaranteed the outstanding frequency response characteristic of complete machine, provides outstanding hardware foundation for complete machine MIC debugging and recording quality.
Description
Technical Field
The invention relates to the technical field of microphone channel structures of electronic equipment, in particular to electronic equipment and a shell thereof.
Background
MIC (microphone) of electronic devices such as mobile phones and tablet computers has a risk of membrane rupture caused by the presence of foreign matters (dust/debris and the like) in the use process, and a non-waterproof type is higher in membrane rupture risk because a waterproof membrane is not used. In the design of a mobile phone, designing acoustic pipes (acoustic cavities) with different sizes in front of an MIC device is a common method for reducing the risk of membrane rupture. The existence of sound pipeline can avoid MIC device direct and external contact, and sound pipeline also has certain foreign matter ability of depositing in addition, reduces the probability that the foreign matter reachd the MIC device, and then reduces MIC rupture of membranes risk. However, the MIC acoustic pipe (acoustic cavity) of the mobile phone generates acoustic resonance, which causes a resonant peak of the MIC frequency response (generally between 5-10 KHz) of the whole mobile phone, and affects the flatness of the MIC frequency response, please refer to fig. 1, which is a frequency response graph of the MIC in the conventional technology of fig. 1. As can be seen from the figure, there is a distinct resonance peak.
In order to reduce the influence of the resonance of the sound pipeline on the recording, two ideas are provided: 1) and the resonant frequency value of the acoustic pipeline is improved, and the resonant frequency value is moved to the outside of the human voice frequency band as far as possible. The mode of improving the resonant frequency of the sound pipeline is generally adopted in the industry to reduce the interference to the human sound frequency band (less than 8kHz), but is limited by the internal layout and design thought of the mobile phone, the structural design of the MIC sound pipeline in the mobile phone in the conventional technology is largely the same and slightly different, and the MIC sound quality of the whole mobile phone is improved. 2) The value of the resonant peak of the sound cavity is reduced, for example, a sound absorption material with larger damping is attached to the pipeline, but the effect is limited, the resonant peak cannot be completely eliminated, and the cost is increased to different degrees. The two existing ideas are industry acquaintances and are always applied to different degrees in actual products.
The existence of sound pipeline can avoid MIC device direct and external contact, and sound pipeline also has certain foreign matter ability of depositing in addition, reduces the probability that the foreign matter reachd the MIC device, and then reduces MIC rupture of membranes risk. However, the MIC acoustic pipe (acoustic cavity) of the mobile phone generates acoustic resonance, which causes a resonance peak of the MIC frequency response (generally between 5-10 KHz) of the whole mobile phone, and affects the flatness of the MIC frequency response. In summary, there are two disadvantages:
1) on the premise of meeting the AOP of the MIC device (the AOP of the MIC device limits the maximum sound pressure of input MIC), the acoustic resonance peak seriously limits the freedom degree of MIC debugging of the whole machine (the upper limit of gain is limited), and the recording (conversation) quality of the whole machine is influenced (a larger sound pressure signal is not recorded clearly, and a smaller sound pressure signal is not recorded).
2) The resonance frequency (generally between 5-10 KHz) of the sound pipeline falls within the human sound frequency band, which seriously affects the definition of sound pickup and affects the functions of conversation, voice awakening and the like. The existing design idea for improving the resonance frequency of the sound pipeline is limited by the requirements of space layout, design method, foreign matter resistance and the like of a mobile phone, the resonance frequency of the pipeline cannot be obviously improved (the resonance frequency of the pipeline cannot be improved beyond the human voice frequency band), the resonance peak of the sound pipeline cannot be reduced, and the improvement on the recording quality and the function experience is little.
Disclosure of Invention
A first aspect of an embodiment of the present application provides a casing, where a pickup channel of a microphone is provided in the casing, and the pickup channel includes a main channel and a side branch filter cavity; one end of the main channel is a sound inlet, and the other end of the main channel is arranged corresponding to the microphone; the side branch filtering cavity is communicated with the main channel and used for carrying out resonance filtering on the sound wave signals passing through the main channel.
In a second aspect, an embodiment of the present application provides an electronic device, where the electronic device includes a microphone and the housing in any of the above embodiments, where the microphone is disposed corresponding to one end of a main channel of a sound pickup channel of the housing, and can pick up sound through the sound pickup channel.
The casing that this application embodiment provided has designed an MIC pickup channel that contains side branch filtering resonant cavity, compares in ordinary acoustic duct, and this scheme effectively restraines the influence of acoustic duct resonance to complete machine MIC frequency response curve, when playing MIC protection (prevent rupture of membranes) effect, has still guaranteed the outstanding frequency response characteristic of complete machine, provides outstanding hardware foundation for complete machine MIC debugging and recording quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present application in which a housing and a microphone are combined;
FIG. 2 is a schematic sectional view of the housing of the embodiment of FIG. 1;
FIG. 3 is a schematic cross-sectional structural view of another embodiment of the housing of the present application;
FIG. 4 is a graph of the cavity frequency response of a conventional acoustic pipe and a pipe with a side branch filter cavity obtained by a finite element numerical calculation method;
FIG. 5 is a graph of the MIC frequency response curve of the pickup channel sample complete machine in this embodiment;
FIG. 6 is a schematic structural view of yet another embodiment of the housing of the present application;
FIG. 7 is a schematic, exploded view of the housing of FIG. 6;
FIG. 8 is a partially disassembled schematic view of an embodiment of an electronic device of the present application;
fig. 9 is a block diagram illustrating a structural composition of an embodiment of an electronic device according to the present application.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Likewise, the following examples are only some but not all examples of the present invention, and all other examples obtained by those skilled in the art without any inventive step are within the scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
As used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.
Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic overall structure diagram of an embodiment of a housing and a microphone of the present application, and fig. 2 is a schematic cross-sectional structure diagram of the housing in the embodiment of fig. 1; it should be noted that the housing in the present application may be a side frame or a part of a housing of an electronic device, and the electronic device may include an electronic device with a microphone (hereinafter referred to as MIC) such as a mobile phone, a tablet computer, a notebook computer, and a wearable device. The shell 10 for the electronic equipment is internally provided with a sound pickup channel 100 of a microphone 20, wherein the sound pickup channel 100 comprises a main channel 110 and a side branch filter cavity 120; one end of the main channel 110 is communicated with one side surface of the casing 10 and forms a sound inlet 111, and the other end is communicated with the other side surface of the casing 10 and forms a sound outlet 112, and is arranged corresponding to the microphone 20; the side branch filter cavity 120 communicates with the main channel 110 for resonance filtering of the acoustic signal passing through the main channel 110. It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.
Specifically, sound pickupResonant frequency f of the channel 1000The following formula is satisfied:
where c denotes the speed of sound in the gas, S denotes the cross-sectional area of the main passage 110, l denotes the length of the main passage 110, d denotes the diameter of the main passage 110, and V denotes the volume of the main passage 110. The side-branch filter cavity 120 is located at one side of the main channel 110 (without strict position limitation, the main channel 110 can achieve the effect both from top to bottom and from left to right), and the resonant frequency of the side-branch filter cavity 120 needs to be equal to (or close to) the resonant frequency of the main channel 110 in design; the side-branch filter cavity 120 has a resonant frequency consistent with that of the main channel 110, and absorbs the resonant energy of the main channel 110 in a targeted manner, thereby reducing the peak value at the resonant frequency point. The resonant frequencies of main channel 110 and side-branch filter cavity 120 are designed to satisfy the helmholtz resonator theory, i.e., the aforementioned formula.
In the illustration of the present embodiment, there is only one side branch filter cavity 120, and optionally, in some other embodiments, there may be a plurality of side branch filter cavities 120, which are respectively communicated with the main channel 110. The number of specific side-branch filter cavities 120 is not specifically limited herein. Wherein, the main channel 110 and the side branch filter cavity 120 are communicated through a connecting channel 130. The resonant frequency of the main channel 110, the physical size of the side branch filter cavity 120, the final sound absorption effect, etc. may also be determined by using a finite element numerical calculation method to assist in the design of the sound duct. The finite element numerical calculation method is not detailed here, and the method can be implemented by commercial software commonly used in the industry, such as ANSYS or COMSOL.
The casing that this application embodiment provided has designed an MIC pickup channel that contains side branch filtering resonant cavity, compares in ordinary acoustic duct, and this scheme effectively restraines the influence of acoustic duct resonance to complete machine MIC frequency response curve, when playing MIC protection (prevent rupture of membranes) effect, has still guaranteed the outstanding frequency response characteristic of complete machine, provides outstanding hardware foundation for complete machine MIC debugging and recording quality.
Optionally, referring to fig. 3, fig. 3 is a schematic cross-sectional view of another embodiment of the housing of the present application, and the sound pickup channel 100 in the embodiment is the sameComprises a main channel 110 and a side branch filter cavity 120; one end of the main channel 110 is communicated with one side surface of the casing 10 and forms a sound inlet 111, and the other end is communicated with the other side surface of the casing 10 and forms a sound outlet 112, and is arranged corresponding to the microphone 20; the side branch filter cavity 120 communicates with the main channel 110 for resonance filtering of the acoustic signal passing through the main channel 110. Resonance frequency f of the sound pickup channel 1000The following formula is also satisfied:
where c denotes the speed of sound in the gas, S denotes the cross-sectional area of the main passage 110, l denotes the length of the main passage 110, d denotes the diameter of the main passage 110, and V denotes the volume of the main passage 110. The side-branch filter cavity 120 is located at one side of the main channel 110 (without strict position limitation, the main channel 110 can achieve the effect both from top to bottom and from left to right), and the resonant frequency of the side-branch filter cavity 120 needs to be equal to (or close to) the resonant frequency of the main channel 110 in design; the side-branch filter cavity 120 has a resonant frequency consistent with that of the main channel 110, and absorbs the resonant energy of the main channel 110 in a targeted manner, thereby reducing the peak value at the resonant frequency point. The resonant frequencies of main channel 110 and side-branch filter cavity 120 are designed to satisfy the helmholtz resonator theory, i.e., the aforementioned formula.
Optionally, the main channel 110 and the side-branch filter cavity 120 are communicated through a connecting channel 130. Unlike the previous embodiments, the housing 10 of the present embodiment further includes a damping material 140, and the damping material 140 is disposed between the main channel 110 and the side-branch filter cavity 120. Specifically, the damping material 140 is disposed between the connecting channel 130 and the side-branch filter cavity 120. Optionally, the damping material 140 may be made of a damping mesh. A damping net (or other damping materials) is attached to the inlet of the side branch filtering cavity 120; because the size of the side branch filter cavity 120 is different from that of the main channel 110, the resonance bandwidth and energy of the side branch filter cavity and the main channel are not completely different (namely, the Q value is different), and the damping material 140 is adhered at the inlet of the side branch filter cavity 120 to balance the Q values of the side branch filter cavity and the main channel, so that the sound absorption effect is further improved, and the MIC frequency response of the whole machine is flatter. Referring to fig. 4 and 5 together, fig. 4 is a graph of the cavity frequency response of the common acoustic pipe and the pipe with the side branch filtering cavity obtained by using a finite element numerical calculation method; fig. 5 is a graph of a measurement result of the MIC frequency response curve of the whole pickup channel sample in this embodiment, and both a numerical simulation and a measurement result show that the technical scheme in this embodiment has a superior effect (basically eliminating a resonance peak value) on optimizing the MIC frequency response of the whole pickup channel sample. It should be noted that the terms "first", "second" and "third" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the shell in the embodiment, an MIC (microphone) acoustic pipeline with a side branch filter resonant cavity is designed, so that the influence of acoustic cavity resonance on the MIC frequency response of the whole machine is effectively inhibited, and a relatively flat whole machine frequency response curve is obtained; by attaching a damping net (or other damping materials) to the opening of the side branch filtering resonant cavity, the Q values of the main cavity and the resonant cavity are balanced, and the sound absorption (filtering) effect of the side branch filtering resonant cavity is improved.
In addition, in some other embodiments, a sound absorbing material (not shown) may be disposed in the bypass filter cavity 120, and optionally, the sound absorbing material may be sound absorbing cotton. In the design of the sound pipeline with the side branch filter resonant cavity, the scheme of filling sound-absorbing cotton in the side branch resonant cavity can be adopted, the sound-absorbing cotton can equivalently increase the volume of the resonant cavity (reduce the physical volume of the resonant cavity), the effect of a damping net can be achieved (the damping net is saved), and the space and the cost can be saved. Calculations and analyses can be performed by finite element numerical simulations to determine the "physical volume of the resonant cavity (side branch filter cavity 120)" and the "amount of acoustic wool".
Referring to fig. 6 and 7 together, fig. 6 is a schematic structural diagram of a further embodiment of the housing of the present application, fig. 7 is a schematic structural diagram of the housing in fig. 6, and the housing 10 in the present embodiment includes a main body portion 11 and a cover plate 12. The main body 11 and the cover plate 12 cooperate to form sound pickupA channel 100. The sound pickup channel 100 also includes a main channel 110 and a side branch filter cavity 120; one end of the main channel 110 is communicated with one side surface of the casing 10 and forms a sound inlet 111, and the other end is communicated with the other side surface of the casing 10 and is arranged corresponding to the microphone 20; the side branch filter cavity 120 communicates with the main channel 110 for resonance filtering of the acoustic signal passing through the main channel 110. Resonance frequency f of the sound pickup channel 1000The following formula is also satisfied:
where c denotes the speed of sound in the gas, S denotes the cross-sectional area of the main passage 110, l denotes the length of the main passage 110, d denotes the diameter of the main passage 110, and V denotes the volume of the main passage 110. The side-branch filter cavity 120 is located at one side of the main channel 110 (without strict position limitation, the main channel 110 can achieve the effect both from top to bottom and from left to right), and the resonant frequency of the side-branch filter cavity 120 needs to be equal to (or close to) the resonant frequency of the main channel 110 in design; the side-branch filter cavity 120 has a resonant frequency consistent with that of the main channel 110, and absorbs the resonant energy of the main channel 110 in a targeted manner, thereby reducing the peak value at the resonant frequency point. The resonant frequencies of main channel 110 and side-branch filter cavity 120 are designed to satisfy the helmholtz resonator theory, i.e., the aforementioned formula. The main channel 110 and the side branch filter cavity 120 are communicated through a connecting channel 130. It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
The casing that this application embodiment provided, cooperation structure through main part and apron, including an MIC pickup channel that contains side branch filtering resonant cavity, compare in ordinary acoustic duct, this scheme effectively restraines the influence of acoustic duct resonance to complete machine MIC frequency response curve, when playing MIC protection (prevent rupture of membranes) effect, has still guaranteed the outstanding frequency response characteristic of complete machine, debugs and has provided outstanding hardware basis for complete machine MIC and recording quality.
In addition, an electronic device is further provided in an embodiment of the present application, please refer to fig. 8, where fig. 8 is a schematic diagram illustrating a partial structure of an embodiment of the electronic device according to the present application, where the electronic device includes a microphone 20 and a housing 10, where the housing 10 in the embodiment may be a middle frame or a side frame of the electronic device, and for detailed structural features of the housing 10, please refer to the related description of the foregoing embodiment, which is not repeated herein. The microphone 20 is disposed corresponding to one end of a main channel of a sound pickup channel of the housing 10, and can pick up sound through the sound pickup channel. In the present embodiment, a mobile phone is taken as an example for explanation. In some other embodiments, the electronic device may be a tablet computer, a notebook computer, a wearable device, or the like having a microphone (hereinafter referred to as MIC). Reference numeral 30 in the figure denotes a rear cover of the electronic device.
Referring to fig. 9, fig. 9 is a block diagram illustrating a structural composition of an embodiment of an electronic device according to the present application, where the electronic device may be a mobile phone, a tablet computer, a notebook computer, a wearable device, and the like, and the embodiment illustrates a mobile phone as an example. The electronic device may have a structure including an RF circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wifi module 970, a processor 980, a power supply 990, and the like. Wherein the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected with the processor 980; power supply 990 is used to provide power to the entire electronic device.
Specifically, the RF circuit 910 is used for transmitting and receiving signals; the memory 920 is used for storing data instruction information; the input unit 930 is used for inputting information, and may specifically include a touch panel 931 and other input devices 932 such as operation keys; the display unit 940 may include a display panel 941; the sensor 950 includes an infrared sensor, a laser sensor, etc. for detecting a user approach signal, a distance signal, etc.; a speaker 961 and a microphone (or microphone 20 in the previous embodiments) 962 are coupled to the processor 980 via audio circuitry 960 for emitting and receiving sound signals; the wifi module 970 is used for receiving and transmitting wifi signals, and the processor 980 is used for processing data information of the electronic device. For specific structural features of the electronic device, please refer to the related description of the above embodiments, and detailed descriptions thereof will not be provided herein.
In the electronic equipment in the embodiment, the shell of the electronic equipment is provided with the MIC pickup channel with the side branch filter resonant cavity, compared with a common sound pipeline, the scheme effectively inhibits the influence of the resonance of the sound pipeline on the MIC frequency response curve of the whole machine, plays the role of MIC protection (membrane rupture prevention), simultaneously ensures the excellent frequency response characteristic of the whole machine, and provides an excellent hardware basis for the MIC debugging and recording quality of the whole machine.
The above description is only a part of the embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes performed by the present invention through the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A shell is characterized in that a pickup channel of a microphone is arranged in the shell, and the pickup channel comprises a main channel and a side branch filter cavity; one end of the main channel is a sound inlet, and the other end of the main channel is arranged corresponding to the microphone; the side branch filtering cavity is communicated with the main channel and used for carrying out resonance filtering on the sound wave signals passing through the main channel.
2. The housing of claim 1, wherein the number of the bypass filter cavities is plural and each of the bypass filter cavities communicates with the main channel.
3. Housing according to claim 1, characterized in that the resonance frequency f of the pickup channel0The following formula is satisfied:
where c represents the speed of sound in the gas, S represents the cross-sectional area of the main passage, l represents the length of the main passage, d represents the diameter of the main passage, and V represents the volume of the main passage.
4. The housing of claim 1, wherein a damping material is disposed between the main channel and the side branch filter cavity.
5. The housing of claim 4, wherein the main channel and the bypass filter cavity communicate via a connecting channel.
6. The housing of claim 5, wherein the damping material is disposed between the connecting channel and the side branch filter cavity.
7. The housing of claim 6, wherein the damping material is a damping mesh.
8. The housing of claim 1, wherein a sound absorbing material is disposed within the bypass filter cavity.
9. The housing of claim 7, wherein the sound absorbing material is sound absorbing cotton.
10. An electronic device, characterized in that the electronic device comprises a microphone and a shell as claimed in any one of claims 1-9, the microphone is arranged corresponding to one end of a main channel of a sound pickup channel of the shell and can pick up sound through the sound pickup channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111241268.0A CN113783985A (en) | 2021-10-25 | 2021-10-25 | Electronic equipment and shell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111241268.0A CN113783985A (en) | 2021-10-25 | 2021-10-25 | Electronic equipment and shell thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113783985A true CN113783985A (en) | 2021-12-10 |
Family
ID=78873494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111241268.0A Pending CN113783985A (en) | 2021-10-25 | 2021-10-25 | Electronic equipment and shell thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113783985A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184403A1 (en) * | 2022-03-31 | 2023-10-05 | 京东方科技集团股份有限公司 | Microphone and display panel |
| CN117135531A (en) * | 2023-03-17 | 2023-11-28 | 荣耀终端有限公司 | Electronic equipment and pickup assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020053484A1 (en) * | 2000-09-06 | 2002-05-09 | Atsushi Murakami | Sound absorbing structure |
| WO2014053994A1 (en) * | 2012-10-01 | 2014-04-10 | Ecole Polytechnique Federale De Lausanne (Epfl) | Electroacoustic speaker |
| CN106535015A (en) * | 2016-12-07 | 2017-03-22 | 歌尔科技有限公司 | Microphone channel structure |
| CN206408985U (en) * | 2017-01-22 | 2017-08-15 | 成都济柴动力设备有限公司 | A kind of noise reduction room for generator |
| CN111988698A (en) * | 2020-08-31 | 2020-11-24 | 歌尔科技有限公司 | Earphone set |
-
2021
- 2021-10-25 CN CN202111241268.0A patent/CN113783985A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020053484A1 (en) * | 2000-09-06 | 2002-05-09 | Atsushi Murakami | Sound absorbing structure |
| WO2014053994A1 (en) * | 2012-10-01 | 2014-04-10 | Ecole Polytechnique Federale De Lausanne (Epfl) | Electroacoustic speaker |
| CN106535015A (en) * | 2016-12-07 | 2017-03-22 | 歌尔科技有限公司 | Microphone channel structure |
| CN206408985U (en) * | 2017-01-22 | 2017-08-15 | 成都济柴动力设备有限公司 | A kind of noise reduction room for generator |
| CN111988698A (en) * | 2020-08-31 | 2020-11-24 | 歌尔科技有限公司 | Earphone set |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184403A1 (en) * | 2022-03-31 | 2023-10-05 | 京东方科技集团股份有限公司 | Microphone and display panel |
| CN117135531A (en) * | 2023-03-17 | 2023-11-28 | 荣耀终端有限公司 | Electronic equipment and pickup assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107734092B (en) | Mobile terminal | |
| KR101013330B1 (en) | Speaker arrangement for communication terminal | |
| US7627112B2 (en) | Sound guide for speaker and handset for mobile communication using the same | |
| US8509455B2 (en) | Multiple-use acoustic port | |
| JP4924074B2 (en) | Microphone mounting structure in electronic equipment and electronic equipment | |
| CN113783985A (en) | Electronic equipment and shell thereof | |
| US9198317B2 (en) | Multi-functional FPC assembly | |
| JP2007537611A (en) | Speaker unit and portable terminal including the speaker unit | |
| CN101374367A (en) | Electric device | |
| CN216700057U (en) | Electronic device | |
| US20090106024A1 (en) | Portable electronic device and a noise suppressing method thereof | |
| CN108769879B (en) | Back sound cavity subassembly and electronic equipment | |
| CN103313159B (en) | A kind of electronic equipment | |
| US8301188B2 (en) | Electronic devices including substrate mounted acoustic actuators and related methods and mobile radiotelephones | |
| WO2019114513A1 (en) | Camera assembly and electronic device having same | |
| CN212259315U (en) | Watch with a memory | |
| EP1379101A1 (en) | Speaker arrangement for communication terminal | |
| EP2997720B1 (en) | Reduced acoustic coupling | |
| US20070133820A1 (en) | Channel capacity improvement in wireless mobile communications by voice SNR advancements | |
| CN107864258B (en) | Shell assembly of electronic equipment and electronic equipment | |
| KR101089473B1 (en) | Speaker arrangement for foldable terminals | |
| US20090170563A1 (en) | Voice communication device | |
| EP2139207A2 (en) | mobile terminal and speaker device thereof | |
| US20080159575A1 (en) | Electronic device with internal uni-directional microphone | |
| JP5255391B2 (en) | Electronics |
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 |