CN207802315U - Digital sound - Google Patents
Digital sound Download PDFInfo
- Publication number
- CN207802315U CN207802315U CN201721390289.8U CN201721390289U CN207802315U CN 207802315 U CN207802315 U CN 207802315U CN 201721390289 U CN201721390289 U CN 201721390289U CN 207802315 U CN207802315 U CN 207802315U
- Authority
- CN
- China
- Prior art keywords
- digital
- sound
- digital audio
- processing device
- audio processing
- 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.)
- Active
Links
Abstract
The utility model is related to a kind of digital sounds, pass through above-mentioned digital sound, input unit can obtain the digital audio and video signals of exterior terminal and be transferred to digital audio processing device, the audio frequency parameter of digital audio processing device adjustable digital audio signal, digital audio and video signals after being adjusted, then pass through sound-producing device sounding, i.e. digital audio processing device is handled digital signal, digital audio processing device drives sound-producing device sounding according to the digital signal after adjusting, without carrying out digital-to-analogue conversion to the digital audio and video signals in exterior terminal, digital signal is converted into without analog to digital conversion circuit is arranged, avoid the process for digital signal be converted to analog signal, not only avoid the problem that digital-to-analogue conversion causes distorted signals, ensure the accuracy of digital audio and video signals, so that it is guaranteed that accurate sounding.
Description
Technical field
The utility model is related to technical field of electronic equipment, more particularly to a kind of digital sound.
Background technology
Currently, existing active loundspeakers are to drive sounding using analog signal, and audio signal is substantially digital sound
Frequently, digital-to-analogue conversion is needed before audio signal input, i.e., audio signal is converted into analog signal ability by D/A converter module
Drive the speaker sounding, is distorted to a certain degree however, transfer process will produce, and audio signal is caused to lose HIFI (High-
Fidelity, high-fidelity) sound quality.
Utility model content
Based on this, it is necessary to carry out the problem of digital-to-analogue conversion is easily distorted to audio data for existing, provide one kind
Reduce the digital sound of distorted signals.
A kind of digital sound, including cabinet, the input unit of the exterior terminal for connecting storage digital audio and video signals, number
Word tone frequency processing device and sound-producing device, the digital audio processing device respectively with the input unit and the sounding
Device connects, and the input unit is placed in the cabinet, and the digital audio processing device and the sound-producing device are set respectively
In in the cabinet；
The input unit receives the digital audio and video signals of the exterior terminal transmission, and the digital audio and video signals are passed
The digital audio processing device is transported to, the digital audio processing device carries out audio frequency parameter tune to the digital audio and video signals
Section, the digital audio and video signals after being adjusted, and drive the sound-producing device to send out according to the digital audio and video signals after the adjusting
Sound.
Above-mentioned digital sound in one of the embodiments, the input unit include USB input interfaces and bluetooth mould
Block, the USB input interfaces and the bluetooth module are connect with the digital audio processing device respectively.
Above-mentioned digital sound in one of the embodiments, further includes analog-digital commutator, and the input unit further includes
Satellite interface, the satellite interface connect the digital audio processing device by the analog-digital commutator.
Above-mentioned digital sound in one of the embodiments, further includes being connected to the digital audio processing device and institute
The digital power amplifier circuit between sound-producing device is stated, and the digital power amplifier circuit is placed in the cabinet.
Above-mentioned digital sound in one of the embodiments, further includes being connected to the digital power amplifier circuit and the hair
Digital filter circuit between acoustic device, and the digital filter circuit is placed in the cabinet.
The sound-producing device is voice coil loudspeaker in one of the embodiments, and the quantity of the sound-producing device is at least
Two, each sound-producing device is connect with the digital audio processing device respectively.
The cabinet includes main tank, the main body equipped with first through hole and leads to equipped with second in one of the embodiments,
The sound equipment cover in hole, the main body are placed in the second through-hole of the sound equipment cover, and the main tank is placed in the first through hole of the main body
Interior, the digital audio processing device and the voice coil loudspeaker are respectively placed in the main tank.
The cabinet further includes upper cover plate and lower cover in one of the embodiments, the upper cover plate and the lower cover
Plate is respectively placed in the both ends of the second through-hole of the sound equipment cover.
The cabinet further includes upper decoration plate and lower decorative panel in one of the embodiments, and the upper decoration plate is set
In side of the upper cover plate far from the sound equipment cover, the lower decorative panel is placed in one of the lower cover far from the sound equipment cover
Side.
The cabinet further includes pedestal in one of the embodiments, and it is separate that the pedestal is set to the lower decorative panel
The side of the lower cover.
By above-mentioned digital sound, input unit can obtain the digital audio and video signals of exterior terminal and be transferred to digital audio
Processing unit, the audio frequency parameter of digital audio processing device adjustable digital audio signal, the digital audio letter after being adjusted
Number, then by sound-producing device sounding, i.e. digital audio processing device is handled digital signal, digital audio processing dress
It sets and sound-producing device sounding is driven according to the digital signal after adjusting, without being carried out to the digital audio and video signals in exterior terminal
Digital-to-analogue conversion converts digital signal into without analog to digital conversion circuit is arranged, that is, avoids and turn to digital signal
Be changed to the process of analog signal, not only avoid the problem that digital-to-analogue conversion causes distorted signals, it is ensured that digital audio and video signals it is accurate
Property, and digital signal strong interference immunity in transmission process, so that it is guaranteed that the accuracy of digital signal, it is ensured that accurate sounding.Separately
Outside, by the way that the digital audio processing device and the sound-producing device to be respectively placed in the cabinet, i.e., at digital audio
Reason device and the sound-producing device are integrated in cabinet, and protective device avoids it by external interference, and it is accurate to improve its processing
Degree.
Description of the drawings
Fig. 1 is a kind of functional block diagram of the digital sound of embodiment；
Fig. 2 is the functional block diagram of the digital sound of another embodiment；
Fig. 3 is the decomposition chart of the digital sound of another embodiment.
Specific implementation mode
Referring to Fig. 1, a kind of digital sound of embodiment, including cabinet 100 are provided, for connecting storage digital audio letter
Number exterior terminal input unit 110, digital audio processing device 120 and sound-producing device 130, digital audio processing device
120 connect with input unit 110 and sound-producing device 130 respectively, and input unit 110 is placed in cabinet 100, digital audio processing dress
Set 120 and sound-producing device 130 be respectively placed in cabinet 100.
Input unit 110 receives the digital audio and video signals of exterior terminal transmission, and digital audio and video signals are transmitted to number
Apparatus for processing audio 120, digital audio processing device 120 carries out audio frequency parameter adjusting to digital audio and video signals, after being adjusted
Digital audio and video signals, and according to after adjusting digital audio and video signals drive 130 sounding of sound-producing device.
What i.e. above-mentioned digital audio processing device 120 was handled is digital audio and video signals, since digital signal is by as a system
What " 0 " and " 1 " of row was handled, not to the noise leaving space that may cause distortion, to which digital audio and video signals have
Smaller noise.130 sounding of sound-producing device, digital audio and video signals are driven after carrying out audio frequency parameter adjusting to digital audio and video signals
Be distorted it is small, to keep the sound timbre sent out good.In the present embodiment, it can be driven sound-producing device without carrying out digital-to-analogue conversion
130 carry out sounding, that is, eliminate the process of digital-to-analogue conversion, while can simplifying circuit structure, can also reduce power consumption.
By above-mentioned digital sound, input unit 110 can obtain the digital audio and video signals of exterior terminal and be transferred to number
Apparatus for processing audio 120, the audio frequency parameter of 120 adjustable digital audio signal of digital audio processing device, after being adjusted
Digital audio and video signals, then by 130 sounding of sound-producing device, i.e. digital audio processing device 120 is at digital signal
Reason, digital audio processing device 120 drive 130 sounding of sound-producing device according to the digital signal after adjusting, without to outside
Digital audio and video signals in terminal carry out digital-to-analogue conversion, are converted into without analog to digital conversion circuit is arranged to digital signal,
The process for digital signal be converted to analog signal is avoided, digital-to-analogue conversion is not only avoided to cause asking for distorted signals
Topic, it is ensured that the accuracy of digital audio and video signals, and digital signal strong interference immunity in transmission process, so that it is guaranteed that digital signal
Accuracy, it is ensured that accurate sounding.And circuit structure can be simplified, reduce cost.In addition, by by the digital audio processing
Device and the sound-producing device are respectively placed in the cabinet, i.e., digital audio processing device and the sound-producing device are integrated
In in cabinet, protective device avoids it by external interference, improves it and handles accuracy.
Further, above-mentioned audio frequency parameter adjusting includes that EQ adjusts (balanced device adjusting, the i.e. gain to each frequency range in signal
Value is adjusted) and DRC adjustings (Dynamic range control, dynamic range control, i.e., to the progress of the amplitude of signal
Control to adjust), digital audio processing device 120 can be obtained corresponding by carrying out above-mentioned adjustment process to digital audio and video signals
Digital audio and video signals after adjusting, it is different to make the sound sent out achieve the effect that.For example, DRC is usually used in audio output
Soft pressure limit changes the amplitude of digital audio and video signals, such as will when the amplitude of digital audio and video signals reaches a thresholding
Amplitude in signal more than thresholding is limited to a certain fixed value, to realize that the purpose of pressure limit, synchronous signal are undistorted.One
In a example, digital processing unit can be digital signal processing chip (i.e. dsp chip).
Referring to Fig. 2, in one of the embodiments, input unit 110 include USB (Universal Serial Bus,
Universal serial bus) input interface 101 and bluetooth module 102, USB input interfaces 101 and bluetooth module 102 respectively with number
Word tone frequency processing device 120 connects.
It is appreciated that exterior terminal include USB device and Bluetooth terminal (i.e. the terminal with Bluetooth transmission function,
In one example, it may include but it is not limited to smart mobile phone, tablet computer and personal computer terminal), USB input interfaces 101
USB device can be connected, bluetooth module 102 can connect Bluetooth terminal, i.e. digital audio processing device 120 can be obtained by two ways
It is digital audio and video signals to be stored in the usb device, in USB by USB interface to take digital audio and video signals, one way in which
When equipment passes through USB interface, the digital audio and video signals that USB device can be stored are transmitted to by USB interface at digital audio
Manage device 120.Another mode be by bluetooth module 102, bluetooth module 102 connect Bluetooth terminal when, Bluetooth terminal
The digital audio and video signals that can be stored are transmitted to digital audio processing device 120 by bluetooth module 102.In this way, digital sound
Digital audio and video signals can not only be received by USB interface by, which ringing, carries out sounding, and can receive digital audio by bluetooth module 102
Signal carries out sounding, can more meet the market demand.
Further, USB interface includes the first pin (i.e. V- pins), second pin (i.e. GND pin or grounding lead
Foot), third pin (i.e. D+ pins) and the 4th pin (D- pins), and the first pin, second pin, third pin and
Four pins are separately connected digital audio processing device 120, when USB interface connects the USB device connection of storage electric energy, by the
One pin and second pin are that digital audio processing device 120 provides power supply, to give digital audio processing device 120 to power, number
Word tone frequency processing device 120 is again other each device with energy sources, that is, eliminates external independent power supply.And drawn by third
Foot and the 4th pin receive digital audio and video signals from external interrupt, and are passed to digital audio processing device 120.
Above-mentioned digital sound in one of the embodiments, further includes analog-digital commutator 140, and input unit further includes
Satellite interface 103, satellite interface 103 connect digital audio processing device 120 by analog-digital commutator 140.
Due to being also used extensively by the ear of 3.5mm interfaces (i.e. a diameter of 3.5 millimeters of coaxial audio interface) currently on the market
Machine increases the accommodation of the application, increases the satellite interface 103 to adapt to market situation, since the satellite interface 103 passes
Defeated is analog signal, is carried out to the analog audio signal that satellite interface 103 receives to need to be arranged analog-digital commutator 140
Analog-to-digital conversion, so as to the processing of digital audio processing device 120.In the present embodiment, satellite interface 103 is 3.5mm interfaces.
Specifically, satellite interface 103 is AUX (Auxiliary, auxiliary) interface, i.e. audio input interface, can connect including
But being not limited to mp3, (Moving Picture Experts Group Audio Layer-3, a kind of energy playing music are broadcast
Put device) including electrical audio equipment, with receive electrical audio equipment output audio signal.Further, satellite interface 103
It is connect with analog-digital commutator 140 by cable.
Above-mentioned digital sound in one of the embodiments, further includes being connected to digital audio processing device 120 and sounding
Digital power amplifier circuit 150 between device 130, and digital power amplifier circuit 150 is placed in cabinet 100.
Digital signal device be adjusted digital audio and video signals audio frequency parameter it is adjusted after digital audio parameter after,
Digital power amplifier circuit 150 is transmitted it to, after digital power amplifier circuit 150 receives the adjusting of 120 transmission of digital audio processing device
Digital audio signal and processing is amplified to it, obtain amplifier digital signal, and transmit it to sound-producing device 130 progress
Sounding.In this way, being conducive to drive 130 sounding of sound-producing device.
Above-mentioned digital sound in one of the embodiments, further includes being connected to digital power amplifier circuit 150 and sound-producing device
Digital filter circuit 160 between 130, and digital filter circuit 160 is placed in cabinet 100.
Wherein, digital filter circuit 160 is EMI filter circuit (electromagnetic interference filter circuit), under normal circumstances, number letter
Number generally high frequency ac signal, in order to meet EMI (electromagnetic interference), between digital power amplifier circuit 150 and sound-producing device 130
Digital filter circuit 160 is set.The main function of EMI filter circuit is the interference for filtering out extraneous high-frequency impulse to power supply, simultaneously
Power supply itself is also reduced to extraneous electromagnetic interference.
Sound-producing device 130 is voice coil loudspeaker in one of the embodiments, and the quantity of sound-producing device 130 is at least two
A, each sound-producing device 130 is connect with digital audio processing device 120 respectively.
In this way, digital audio signal can be transmitted separately to each voice coil loudspeaker by digital audio processing device 120, make each sound
It encloses loudspeaker and can receive digital audio signal energy and vibration sounding.On the one hand, the range of sound transmission can be expanded, on the other hand,
Even if sounding can be carried out by other normal voice coil loudspeaker, if wherein the damage of some voice coil loudspeaker is unable to sounding to ensure to count
Word tone rings normal sounding.
Referring to Fig. 3, above-mentioned cabinet 100 includes main tank 301, the master equipped with first through hole in one of the embodiments,
Body 302 and sound equipment cover 303 equipped with the second through-hole, main body 302 are placed in the second through-hole of sound equipment cover 303, and main tank 301 is placed in
In the first through hole of main body 302, digital audio processing device and voice coil loudspeaker are respectively placed in main tank 301.In an example
In, digital power amplifier circuit and digital filter circuit are respectively placed in main tank 301.In this way, in can effectively protect main tank 301
Each device reduces the interference that external environment receives each device in main tank 301.
Cabinet 100 further includes upper cover plate 304 and lower cover 305 in one of the embodiments, upper cover plate 304 and lower cover
Plate 305 is respectively placed in the both ends of the second through-hole of sound equipment cover 303.In this way, second is led to by upper cover plate 304 and lower cover 305
The both ends in hole cover, and avoid external object from causing harmful effect by each device contacts in the second through-hole and main tank 301, to really
The safe handling for protecting each device plays the role of insulation blocking to each device.
Above-mentioned cabinet 100 further includes upper decoration plate 306 and lower decorative panel 307, upper decoration in one of the embodiments,
Plate 306 is placed in side of the upper cover plate 304 far from sound equipment cover 303, and lower decorative panel 307 is placed in lower cover 305 far from sound equipment cover 303
Side.In this way, not only can further protect cabinet 100, and 100 appearance of cabinet can be made more beautiful.
Above-mentioned cabinet 100 further includes pedestal 308 in one of the embodiments, and pedestal 308 is set to lower decorative panel 307
Side far from lower cover 305.In this way, the placement of cabinet 100 can be convenient for, and it can avoid the mill of about 100 decorative panel 307 of cabinet
Damage.
Above-mentioned cabinet 100 further includes balustrade exterior panelling 309 in one of the embodiments, and balustrade exterior panelling 309 is set to sound equipment
The outer surface of cover 303.On the one hand the intensity for promoting entire cabinet 100 keeps it more firm, on the other hand, can make cabinet 100
Overall appearance is more beautiful.
Above-mentioned digital sound further includes circuit board 310, voice coil loudspeaker (i.e. sound-producing device in one of the embodiments,
130) it is arranged on circuit board 310.Voice coil loudspeaker are integrated on circuit board 310, in order to voice coil loudspeaker and other devices
Connection.
USB input interfaces 101 are set to 100100 surface of cabinet in one of the embodiments, convenient for being set with external USB
Standby connection.
Each technical characteristic of above example can be combined arbitrarily, to keep description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield is all considered to be the range of this specification record.
Above example only expresses several embodiments of the utility model, the description thereof is more specific and detailed, but not
Can the limitation to utility model patent range therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this practicality
Novel protection domain.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. a kind of digital sound, which is characterized in that including cabinet, be used to connect the defeated of the exterior terminal of storage digital audio and video signals
Enter device, digital audio processing device and sound-producing device, the digital audio processing device respectively with the input unit with
And the sound-producing device connection, the input unit are placed in the cabinet, the digital audio processing device and the sounding
Device is respectively placed in the cabinet；
The input unit receives the digital audio and video signals of the exterior terminal transmission, and the digital audio and video signals are transmitted to
The digital audio processing device, the digital audio processing device carry out audio frequency parameter adjusting to the digital audio and video signals,
Digital audio and video signals after being adjusted, and drive the sound-producing device sounding according to the digital audio and video signals after the adjusting；
The sound-producing device is voice coil loudspeaker, and the quantity at least two of the sound-producing device, each sound-producing device are distinguished
It is connect with the digital audio processing device；
The cabinet includes that main tank, the main body equipped with first through hole and the sound equipment cover equipped with the second through-hole, the main body are placed in
In second through-hole of the sound equipment cover, the main tank is placed in the first through hole of the main body, the digital audio processing device
And the voice coil loudspeaker are respectively placed in the main tank.
2. digital sound according to claim 1, which is characterized in that the input unit include USB input interfaces and
Bluetooth module, the USB input interfaces and the bluetooth module are connect with the digital audio processing device respectively.
3. digital sound according to claim 2, which is characterized in that further include analog-digital commutator, the input unit
Further include satellite interface, the satellite interface connects the digital audio processing device by the analog-digital commutator.
4. digital sound according to claim 1, which is characterized in that further include being connected to the digital audio processing device
Digital power amplifier circuit between the sound-producing device, and the digital power amplifier circuit is placed in the cabinet.
5. digital sound according to claim 4, which is characterized in that further include being connected to the digital power amplifier circuit and institute
The digital filter circuit between sound-producing device is stated, and the digital filter circuit is placed in the cabinet.
6. digital sound according to claim 1, which is characterized in that the cabinet further includes upper cover plate and lower cover, institute
State the both ends that upper cover plate is respectively placed in the second through-hole of the sound equipment cover with the lower cover.
7. digital sound according to claim 6, which is characterized in that the cabinet further includes upper decoration plate and lower decoration
Plate, the upper decoration plate are placed in side of the upper cover plate far from the sound equipment cover, and the lower decorative panel is placed in the lower cover
Side far from the sound equipment cover.
8. digital sound according to claim 7, which is characterized in that the cabinet further includes pedestal, the pedestal setting
In the side of the lower decorative panel far from the lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721390289.8U CN207802315U (en) | 2017-10-24 | 2017-10-24 | Digital sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721390289.8U CN207802315U (en) | 2017-10-24 | 2017-10-24 | Digital sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207802315U true CN207802315U (en) | 2018-08-31 |
Family
ID=63274950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721390289.8U Active CN207802315U (en) | 2017-10-24 | 2017-10-24 | Digital sound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207802315U (en) |
-
2017
- 2017-10-24 CN CN201721390289.8U patent/CN207802315U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102724360B (en) | Method and device for implementation of hearing-aid function of mobile phone and hearing-aid mobile phone | |
| CN107455009A (en) | Audio system and earphone | |
| TWI390991B (en) | Audio device and audio processing method | |
| CN106941643B (en) | A kind of multi-functional intelligent sound control method of set | |
| CN205987323U (en) | Audio processing circuit and terminal based on type c interface | |
| CN105050013A (en) | MEMS microphone and work control method of such MEMS microphone | |
| CN205622822U (en) | Two bluetooth speaker | |
| CN201315646Y (en) | Digital audio interface circuit for TV | |
| WO2018177243A1 (en) | Bluetooth speaker and bluetooth speaker-based sharing system | |
| CN207802315U (en) | Digital sound | |
| CN101807426B (en) | Audio device and audio processing method | |
| CN103997698A (en) | Bluetooth speaker with NFC function | |
| CN201928424U (en) | Sound source frequency adjusting system and terminal | |
| CN203933885U (en) | A kind of Baffle Box of Bluetooth with NFC communication | |
| WO2018177242A1 (en) | Bluetooth headset and bluetooth headset-based sharing system | |
| CN207802263U (en) | Digital earphone | |
| CN209980228U (en) | External sound card control system based on bluetooth | |
| CN208798146U (en) | A kind of multi-mode radio microphone apparatus | |
| US9792917B2 (en) | Audio processing device and method and electro-acoustic converting device and method | |
| CN106453945A (en) | Automatic external acoustical quality adjusting system for mobile phone | |
| CN202077158U (en) | Automatic noise reduction and AGC (Automatic Gain Control) volume control intercom system in building | |
| CN206517557U (en) | A kind of microphone unit of independent control | |
| CN206042272U (en) | Remove KTV microphone | |
| CN204539090U (en) | Audio frequency apparatus | |
| CN204669602U (en) | Speech recognition equipment, voice sound system and speech communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |