CN106454632A - Device for improving tone quality of flat television - Google Patents
Device for improving tone quality of flat television Download PDFInfo
- Publication number
- CN106454632A CN106454632A CN201610916884.4A CN201610916884A CN106454632A CN 106454632 A CN106454632 A CN 106454632A CN 201610916884 A CN201610916884 A CN 201610916884A CN 106454632 A CN106454632 A CN 106454632A
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- CN
- China
- Prior art keywords
- bass
- audio
- circuit
- flat panel
- frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention provides a device for improving the tone quality of a flat television. On the basis that a built-in two-channel loudspeaker unit of the existing flat television is reserved, an external independent soundbox is additionally used, and used for playing a low-frequency signal in television accompanying sound; therefore, the poor sound effect of a loudspeaker of the flat television itself is improved; simultaneously, the external bass soundbox has an independent audio-frequency amplification and power supply circuit; and a television accompanying sound low-frequency signal transmitted by the flat television is received wirelessly. The independent soundbox can break through space limitation, and satisfy free placement requirements of users; the flat television and the bass soundbox are wirelessly connected in multiple manners, such as FM, 2.4G or Bluetooth protocol; and, the visual and sound effect perfectly matched with the flat television can be realized through the audio combination of the flat television and the bass soundbox.
Description
Technical field
The present invention relates to flat panel TV technical field and in particular to a kind of flat panel TV tonequality lifting device.
Background technology
Constantly improve with science and technology, all kinds of flat board television internal operatic tunes spaces more and more thinner with LCD TV as representative.
The built-in speaker of flat panel TV is limited by space in machine, and effects,sound particularly bass part can not show well
Come, need the requirement taking external sound equipment (case) to can be only achieved high-fidelity audio.Because the directivity of bass part is weak, user is very
Hardly possible tells the composition in left and right acoustic channels in bass.
Content of the invention
The problem existing for prior art, the present invention proposes a kind of device of flat panel TV tonequality lifting, is retaining
On the basis of the built-in two channel loudspeaker units of existing flat panel TV, increase and use an external independent sound equipment, for playing electricity
The sound effect performed poor depending on the low frequency signal in sound accompaniment, the speaker being carried with improving flat panel TV.Meanwhile, this external bass sound
Sound has independent audio frequency and amplifies and power circuit, wirelessly receives the television field frame low frequency letter of flat panel TV transmission
Number.This independent sound equipment can be broken through space and limit and meet the needs that user freely puts.Wireless between flat panel TV and bass sound equipment
Connection can adopt various ways, such as FM (frequency modulation), 2.4G (proprietary protocol) or Bluetooth protocol etc..This flat panel TV adds bass
The audio combination of sound equipment, realizes the vision with the perfect collocation of flat panel TV and acoustics.
The technical scheme is that：A kind of device of flat panel TV tonequality lifting, include internal audio signal process and
Transmission circuit and external independent bass sound equipment；
Described internal audio signal is processed and transmission circuit is except including flat panel TV internal original left and right two-way audio
Outside signal amplification circuit and left and right two speaker, also include frequency mixer, bass filter, wireless-modulated and transmitter unit；Institute
State the audio input end that mixer input connects left and right two-way audio signal amplification circuit, mixer output connects bass filter
Ripple device input, bass filter outfan connects wireless-modulated and transmitter unit input；By frequency mixer by left and right two-way
It is delivered to bass filter, the bass signal after filtering through bass filter is single through wireless-modulated and transmitting after audio signal mixing
Unit launches to external independent bass sound equipment；
Described external independent bass sound equipment includes radio receiving unit, audio demodulation circuit, is provided with volume control circuit
Audio amplifier circuit, woofer unit, AC-DC mu balanced circuit；Described radio receiving unit outfan connects audio frequency solution
Adjust circuit input end, audio demodulation circuit output end connects audio amplifier circuit input, audio amplifier circuit outfan connects
Woofer unit；After radio receiving unit accepts wireless-modulated and the bass signal of transmitter unit transmitting, by bass signal
It is delivered to woofer unit after audio demodulation circuit and audio amplifier circuit are reconciled and amplified to broadcast.
Further, described external independent bass sound equipment is a complete active woofer, and it is steady that power supply passes through AC-DC
Volt circuit carries out voltage stabilizing process.
Further, the cut-off frequency of described bass filtering is set according to the actual tonequality of flat panel TV.
Further, it is capable of the optimization to treble portion by adjusting the audio frequency EQ curve of flat panel TV itself.
Further, wirelessly it is connected by FM frequency modulation, 2.4G between wireless-modulated and transmitter unit and radio receiving unit
Proprietary protocol or Bluetooth protocol.
Compared with prior art, the invention has the beneficial effects as follows：Raise one's voice retaining built-in two sound channels of existing flat panel TV
On the basis of device unit, increase and use an external independent sound equipment, for playing the low frequency signal in television field frame, flat to improve
The sound effect that the speaker that plate TV carries is performed poor.Meanwhile, this external bass sound equipment has independent audio frequency and amplifies and power supply
Circuit, wirelessly receives the television field frame low frequency signal of flat panel TV transmission.This independent sound equipment can be broken through space and limit
Meet the needs that user freely puts.Wirelessly it is connected and can adopt various ways between flat panel TV and bass sound equipment, such as FM (adjusts
Frequently), 2.4G (proprietary protocol) or Bluetooth protocol etc..This flat panel TV adds the audio combination of bass sound equipment, realizes and flat board electricity
Vision and acoustics depending on perfect collocation.
Brief description
Fig. 1：The flat panel TV sound system schematic diagram of present invention design；
Fig. 2：The external independent bass sound equipment internal circuit block diagram that the present invention adopts；
Fig. 3：The flat panel TV internal audio signal of present invention design is processed and transmission circuit block diagram；
Fig. 4：Ordinary flat television field frame frequency sound test figure；
Fig. 5：Using the flat panel TV sound accompaniment frequency sound test figure after the present invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Make use of the letter of the loudspeaker unit 2 and 3 broadcasting sound accompaniment medium-high frequency part of the original two-way sound channel of flat panel TV 1
Number, increased external independent bass sound equipment 4 and bass timbre signal transmission interface circuit, as shown in Figure 1.This method pair
Inside the whole machine of flat panel TV sound system, transformation is little, and tone quality improving effect is obvious.External independent bass sound equipment 4 is using wireless
Signal connected mode, putting position degree of freedom is high, can meet the different requirements of user.This product versatility is very strong, Ke Yigen
Increase according to the market demand or cancel external independent bass sound equipment, to adapt to the customer group of different levels.
The acoustic frequency response actual test curve of existing ordinary flat TV is as shown in Figure 4.From this in figure, we are permissible
Find out, be decreased obviously in the frequency bass partial response amplitude less than 300Hz.It would therefore be desirable to it is low to increase external independence
Sound sound equipment compensates to the frequency bass part less than 300Hz.The audio frequency range compensating in the present invention and 2.1 sound channels
Sound system in mega bass different, the frequency of the latter is lower, and it is mainly an up the subwoofer composition of below 100Hz,
Play the effect rendering playing video background sound effect.
The external independent bass sound equipment internal circuit block diagram that the present invention adopts is as shown in Figure 2.Including radio receiving unit
(containing antenna), audio demodulation circuit, audio frequency amplify (containing power amplifier) circuit, woofer unit, AC-DC mu balanced circuit and sound
Amount control circuit etc..This sound equipment is a complete active woofer, and has reception of wireless signals function.It will be from flat board
The audio signal that television sends over is amplified and converted to sound.
The flat panel TV internal audio signal process of present invention design and transmission circuit block diagram are as shown in Figure 3.Except protecting
Stay outside original left and right two-way audio signal amplification circuit and speaker, increased left and right two-way audio signal mixing, bass
Filtering (LPF), wireless-modulated and transmitter unit (containing antenna) are it would be desirable to the bass signal compensating wirelessly sends to outward
Set low sound sound equipment.Using signal Wireless transceiver have various ways available, be divided into analog- and digital- two big class, main include
FM (frequency modulation), 2.4G (proprietary protocol) or Bluetooth protocol etc..The cut-off frequency of bass filtering (LPF) can be real according to flat panel TV
The tonequality on border is set.If the flat panel TV acoustic frequency response curve of actual measurement in accompanying drawing 4 is it would be desirable to be directed to below 300Hz frequency
Domain compensates, and cut-off frequency could be arranged to 300Hz.
Due to increased external bass sound equipment, bass contribution is compensated, for flat panel TV itself it is only necessary to
Attentively to carry out the tonequality of medium-high frequency section.Therefore, in the present invention, in order to improve overall sound quality further, we also need
The acoustics of the medium-high frequency section of flat panel TV to be optimized itself.As in accompanying drawing 4 actual measurement flat panel TV acoustic frequency response curve, I
Need in the above frequency-region signal of flat television complete machine Promotion From Within 300Hz tonequality.The intermediate-frequency section tonequality of flat panel TV is still
Can, answer emphasis to lift the tonequality of treble portion.Can be realized to high line by adjusting the audio frequency EQ curve of flat panel TV itself
The optimization dividing.Accompanying drawing 5 be using the present invention after flat panel TV sound system actual test acoustic frequency response curve.Originally put down
Plate TV is compared, not only bass and treble portion be improved significantly, overall loudness also has larger lifting.It can be seen that, using this
Preferable effect is achieved after invention.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of lifting of flat panel TV tonequality device it is characterised in that：Including internal audio signal process and transmission circuit and
External independent bass sound equipment；
Described internal audio signal is processed and transmission circuit is except including flat panel TV internal original left and right two-way audio signal
Outside amplifying circuit and left and right two speaker, also include frequency mixer, bass filter, wireless-modulated and transmitter unit；Described mixed
Frequency device input connects the audio input end of left and right two-way audio signal amplification circuit, and mixer output connects bass filter
Input, bass filter outfan connects wireless-modulated and transmitter unit input；By frequency mixer by left and right two-way audio
It is delivered to bass filter, the bass signal after filtering through bass filter is sent out through wireless-modulated and transmitter unit after signal mixing
It is incident upon external independent bass sound equipment；
Described external independent bass sound equipment includes radio receiving unit, audio demodulation circuit, is provided with the sound of volume control circuit
Frequency amplifying circuit, woofer unit, AC-DC mu balanced circuit；Described radio receiving unit outfan connects audio demodulation electricity
Road input, audio demodulation circuit output end connects audio amplifier circuit input, and audio amplifier circuit outfan connects bass
Loudspeaker unit；After radio receiving unit accepts wireless-modulated and the bass signal of transmitter unit transmitting, bass signal is passed through
Audio demodulation circuit and audio amplifier circuit are reconciled and are delivered to the broadcast of woofer unit after amplifying.
2. a kind of flat panel TV tonequality lifting according to claim 1 device it is characterised in that：Described external independence is low
Sound sound equipment is a complete active woofer, and power supply carries out voltage stabilizing process by AC-DC mu balanced circuit.
3. a kind of flat panel TV tonequality lifting according to claim 1 device it is characterised in that：Described bass filtering
Cut-off frequency is set according to the actual tonequality of flat panel TV.
4. a kind of flat panel TV tonequality lifting according to claim 1 device it is characterised in that：By adjusting flat board electricity
Audio frequency EQ curve depending on itself is capable of the optimization to treble portion.
5. a kind of flat panel TV tonequality lifting according to claim 1 device it is characterised in that：Wireless-modulated and transmitting
Wirelessly it is connected by FM frequency modulation, 2.4G proprietary protocol or Bluetooth protocol between unit and radio receiving unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610916884.4A CN106454632A (en) | 2016-10-20 | 2016-10-20 | Device for improving tone quality of flat television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610916884.4A CN106454632A (en) | 2016-10-20 | 2016-10-20 | Device for improving tone quality of flat television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106454632A true CN106454632A (en) | 2017-02-22 |
Family
ID=58175579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610916884.4A Pending CN106454632A (en) | 2016-10-20 | 2016-10-20 | Device for improving tone quality of flat television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106454632A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816223A (en) * | 2005-02-06 | 2006-08-09 | 华硕电脑股份有限公司 | Wireless Bass Sound System for Electronic Devices |
| CN201315645Y (en) * | 2008-12-05 | 2009-09-23 | 青岛海信电器股份有限公司 | Extra bass circuit and television with extra bass circuit |
| CN202841489U (en) * | 2012-10-18 | 2013-03-27 | 占院华 | Wireless Bluetooth Hi-Fi Background Music Controller |
| CN204305281U (en) * | 2015-01-05 | 2015-04-29 | 陈晓燕 | A kind of Integral ceiling Baffle Box of Bluetooth |
-
2016
- 2016-10-20 CN CN201610916884.4A patent/CN106454632A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816223A (en) * | 2005-02-06 | 2006-08-09 | 华硕电脑股份有限公司 | Wireless Bass Sound System for Electronic Devices |
| CN201315645Y (en) * | 2008-12-05 | 2009-09-23 | 青岛海信电器股份有限公司 | Extra bass circuit and television with extra bass circuit |
| CN202841489U (en) * | 2012-10-18 | 2013-03-27 | 占院华 | Wireless Bluetooth Hi-Fi Background Music Controller |
| CN204305281U (en) * | 2015-01-05 | 2015-04-29 | 陈晓燕 | A kind of Integral ceiling Baffle Box of Bluetooth |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |