CN105120394A - Adaptively volume-adjusting WIFI sound box - Google Patents
Adaptively volume-adjusting WIFI sound box Download PDFInfo
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- CN105120394A CN105120394A CN201510457505.5A CN201510457505A CN105120394A CN 105120394 A CN105120394 A CN 105120394A CN 201510457505 A CN201510457505 A CN 201510457505A CN 105120394 A CN105120394 A CN 105120394A
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- audio amplifier
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Abstract
The invention discloses an adaptively volume-adjusting WIFI sound box. The adaptively volume-adjusting WIFI sound box comprises a WIFI module, a control module, a storage module, a sound sensor, an audio decoding module, an amplifying module and a loudspeaker. The control module is connected with the WIFI module, the storage module, the sound sensor, the audio decoding module and the amplifying module. The loudspeaker is connected with the audio decoding module through the amplifying module. The storage module is used for storing playing protocols. The control module comprises a WIFI control unit, a sound comparing unit and a volume adjusting unit. The WIFI control unit is used for receiving audio data of the WIFI module according to the playing protocols in the storage module. The sound comparing unit is used for comparing a received currently-playing volume with a preset volume threshold. The volume adjusting unit is used for controlling the amplifying module to adjust the playing volume according to the comparison result of the sound comparing unit. The adaptively volume-adjusting WIFI sound box with a simple structure is convenient to use and requires no wired connection. The WIFI sound box which achieves automatic volume adjustment is labor-saving and worry-saving.
Description
Technical field
The present invention relates to audio amplifier field, particularly relate to a kind of WIFI audio amplifier of self-adaptative adjustment volume.
Background technology
Audio amplifier refers to a kind of equipment that audio signal can be transformed to sound.Popular saying just refers in speaker main casing or subwoofer casing and carries power amplifier, goes out sound, make its sound become large to audio signal after carrying out amplification process by the playback of audio amplifier own.
The object that why there is casing of audio amplifier---mainly in order to prevent the acoustic signals of diaphragm of loudspeaker obverse and reverse from directly forming loop, cause the high intermediate frequency sound only having wavelength very little to propagate out, and other voice signal is applied and has balanced out.
The physical model of audio amplifier opens a hole on one block of infinitely-great rigidity baffle, installs loud speaker, so just can ensure that the voice signal of loud speaker obverse and reverse can not form loop, cause sound wave loop.
But actual use, audio amplifier impossible make infinitely-great, and therefore, people form an airtight space with baffle after loud speaker, ensure the front transmission of sound wave.
Thing followed problem: due to atmospheric problem after audio amplifier is airtight, the casing of audio amplifier is more conducive to more greatly low-frequency sound reduction, so, the volume of general audio amplifier be according in the speaker size of bass unit calculate the data of a compromise.
Much still can not allow too large casing by environment, people are in order to further reduced volume, the requirement of resetting according to feature and the reinforcement low-frequency sound wave of sound wave again devises baffle in case, phase-reversing tube, resonant cavity etc., mainly in order to strengthen at the voice signal of low frequency frequency range to certain wavelength, and reduce atmospheric pressure further to the impact of sound-reducing.
Loud speaker is a device the weakest in stereo set, and for acoustics, it is again most important parts.Loud speaker has multiple sort-type: can be divided into electrodynamic type, electromagnetic type, piezoelectric type, digital etc. multiple by its transducing mode; Single cone, compound cone, compound horn, coaxial etc. multiple can be divided into by diaphragm structure; Cone benzvalene form, ball top type, flat, belt etc. can be divided into multiple by vibrating diaphragm beginning; Frequently high frequency, intermediate frequency, low frequency, ultralow frequency and full range speaker can be divided into by playback; External magnetic type, internal magnetization, double magnetic circuit formula and protected type etc. can be divided into multiple by magnetic circuit form; Ferrimagnet, neodymium boron magnet, alnico magnet loud speaker can be divided into by magnetic circuit character; Papery and non-cone loudspeaker etc. can be divided by diaphragm materials.
A, dynamic speaker are most widely used, and it utilizes the interaction force between voice coil loudspeaker voice coil and stationary magnetic field to make diaphragm oscillations and sounding.DYN dynamic woofer is in the majority to bore benzvalene form, and Squawker mostly is cone benzvalene form or ball top type, and high pitch loudspeaker is then conventional with ball top type and belt, horn type.
The structure of B, cone benzvalene form loud speaker is simple, and energy conversion efficiency is higher.The diaphragm materials that it uses based on paper pulp material, or mixes the materials such as wool, silk, carbon fiber, to increase the performances such as its rigidity, internal damping and waterproof.A new generation's electrodynamic type cone basin loudspeaker employs non-paper cone, and as composite materials such as polypropylene, mica silicon carbide/polypropylene, carbon fiber textile, bulletproof cloth, hard aluminium foil, CD ripple, glass fibres, performance gains improves.
C, ball top type loudspeaker have soft ball top and hard sphere top point.The cotton of the color silk of the vibrating diaphragm of soft ball item loud speaker, tiffany, impregnated phenolic resin, chemical fibre and composite material, be characterized in that playback tonequality is soft and graceful; The materials such as vibrating diaphragm color aluminium alloy, titanium alloy and the beryllium alloy of hard Dome loudspeaker, are characterized in that playback tonequality is clear and melodious.
The radiation mode of D, horn loudspeaker is different from cone benzvalene form loud speaker, and this is after diaphragm oscillations, and sound spreads out through horn again.Be characterized in electroacoustic conversion and radiation efficiency little compared with high, distance, distortion, but playback frequency band and directive property narrower.
The voice coil loudspeaker voice coil of E, ribbon speaker is directly produced on whole vibrating diaphragm (aluminium alloy polyimide film etc.), direct-coupling between voice coil loudspeaker voice coil and vibrating diaphragm.The alternating magnetic field that voice coil loudspeaker voice coil is produced and Constant charge soil interact, and make belt diaphragm oscillations and give off sound wave.Be characterized in that fast response time, distortion are little, playback tonequality is fine and smooth, stereovision is good.
Casing is used for eliminating the acoustic short circuit of loudspeaker unit, suppresses its acoustic resonance, widens its Hz-KHz, reduces distortion.The box shape structure of audio amplifier have bookshelf-type and console mode point, also have vertical and horizontal dividing.Box inner structure has again the various ways such as closed, inverted phase type, band general formula, empty cone formula, labyrinth type, symmetrical drive-type and horn type, and using maximum is closed, inverted phase type and band general formula.
Existing audio amplifier is all generally wired connection, at limited space or very inconvenient when needing frequent Mobile loudspeaker box.
In addition, existing audio amplifier generally needs the volume of manual adjustments sound, and because the voice data received play-overed by audio amplifier, sometimes the volume of initial data is large especially, sometimes little especially again, needs continuous manual adjustments, extremely bothers.
Summary of the invention
Technical problem to be solved by this invention is for defect involved in background technology, provides a kind of
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A WIFI audio amplifier for self-adaptative adjustment volume, is characterized in that, comprises WIFI module, control module, memory module, sound transducer, audio decoder module, amplification module and loud speaker;
Described control module is connected with WIFI module, memory module, sound transducer, audio decoder module, amplification module respectively, and described loud speaker is connected with audio decoder module by described amplification module;
Described memory module is for storing broadcasting agreement;
Described sound transducer for responding to the current broadcast sound volume of described audio amplifier, and is passed to described control module;
The voice data that described audio decoder module receives for decoding, and give described amplification module by decoded delivery of audio data;
Described loud speaker is for playing the voice data after amplification module amplifies;
Described control module comprises WIFI control unit, sound comparing unit and volume adjustment unit;
Described WIFI control unit is used for the voice data receiving WIFI module according to the broadcasting agreement in memory module, and is passed to described audio decoder module;
Described sound comparing unit is used for the current broadcast sound volume received and the volume threshold preset to compare;
Described volume adjustment unit is used for controlling amplification module according to the comparative result of sound comparing unit and adjusts broadcast sound volume.
The specific strategy of described volume adjustment unit adjustment is:
If current broadcast sound volume is greater than default volume threshold, and both differences are greater than default volume error threshold, then reduce current broadcast sound volume, until the absolute value of difference is less than default volume error threshold between current broadcast sound volume and volume threshold according to the volume step-length preset;
If current broadcast sound volume is less than default volume threshold, and both differences are greater than default volume error threshold, then increase current broadcast sound volume, until the absolute value of difference is less than default volume error threshold between current broadcast sound volume and volume threshold according to the volume step-length preset.
As the further prioritization scheme of WIFI audio amplifier of a kind of self-adaptative adjustment of the present invention volume, the processor of described control module adopts ARM series monolithic.
As the further prioritization scheme of WIFI audio amplifier of a kind of self-adaptative adjustment of the present invention volume, the processor of described control module adopts SAA7750 single-chip microcomputer.
As the further prioritization scheme of WIFI audio amplifier of a kind of self-adaptative adjustment of the present invention volume, described memory module adopts SDRAM.
As the further prioritization scheme of WIFI audio amplifier of a kind of self-adaptative adjustment of the present invention volume, the model of described memory module is K4S561632.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1. structure is simple, easy to use;
2. adopt wireless connections, avoid the problem of cable operator inconvenience;
3. automatic regulating volume, saves worry laborsaving.
Embodiment
Below technical scheme of the present invention is described in further detail:
The invention discloses a kind of WIFI audio amplifier of self-adaptative adjustment volume, it is characterized in that, comprise WIFI module, control module, memory module, sound transducer, audio decoder module, amplification module and loud speaker;
Described control module is connected with WIFI module, memory module, sound transducer, audio decoder module, amplification module respectively, and described loud speaker is connected with audio decoder module by described amplification module;
Described memory module is for storing broadcasting agreement;
Described sound transducer for responding to the current broadcast sound volume of described audio amplifier, and is passed to described control module;
The voice data that described audio decoder module receives for decoding, and give described amplification module by decoded delivery of audio data;
Described loud speaker is for playing the voice data after amplification module amplifies;
Described control module comprises WIFI control unit, sound comparing unit and volume adjustment unit;
Described WIFI control unit is used for the voice data receiving WIFI module according to the broadcasting agreement in memory module, and is passed to described audio decoder module;
Described sound comparing unit is used for the current broadcast sound volume received and the volume threshold preset to compare;
Described volume adjustment unit is used for controlling amplification module according to the comparative result of sound comparing unit and adjusts broadcast sound volume.
The specific strategy of described volume adjustment unit adjustment is:
If current broadcast sound volume is greater than default volume threshold, and both differences are greater than default volume error threshold, then reduce current broadcast sound volume, until the absolute value of difference is less than default volume error threshold between current broadcast sound volume and volume threshold according to the volume step-length preset;
If current broadcast sound volume is less than default volume threshold, and both differences are greater than default volume error threshold, then increase current broadcast sound volume, until the absolute value of difference is less than default volume error threshold between current broadcast sound volume and volume threshold according to the volume step-length preset.
The processor of described control module adopts ARM series monolithic, preferential employing SAA7750 single-chip microcomputer.
Described memory module adopts SDRAM, and model is K4S561632.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a WIFI audio amplifier for self-adaptative adjustment volume, is characterized in that, comprises WIFI module, control module, memory module, sound transducer, audio decoder module, amplification module and loud speaker;
Described control module is connected with WIFI module, memory module, sound transducer, audio decoder module, amplification module respectively, and described loud speaker is connected with audio decoder module by described amplification module;
Described memory module is for storing broadcasting agreement;
Described sound transducer for responding to the current broadcast sound volume of described audio amplifier, and is passed to described control module;
The voice data that described audio decoder module receives for decoding, and give described amplification module by decoded delivery of audio data;
Described loud speaker is for playing the voice data after amplification module amplifies;
Described control module comprises WIFI control unit, sound comparing unit and volume adjustment unit;
Described WIFI control unit is used for the voice data receiving WIFI module according to the broadcasting agreement in memory module, and is passed to described audio decoder module;
Described sound comparing unit is used for the current broadcast sound volume received and the volume threshold preset to compare;
Described volume adjustment unit is used for controlling amplification module according to the comparative result of sound comparing unit and adjusts broadcast sound volume.
2. the WIFI audio amplifier of self-adaptative adjustment volume according to claim 1, is characterized in that, the processor of described control module adopts ARM series monolithic.
3. the WIFI audio amplifier of self-adaptative adjustment volume according to claim 2, is characterized in that, the processor of described control module adopts SAA7750 single-chip microcomputer.
4. the WIFI audio amplifier of self-adaptative adjustment volume according to claim 1, is characterized in that, described memory module adopts SDRAM.
5. the WIFI audio amplifier of self-adaptative adjustment volume according to claim 4, is characterized in that, the model of described memory module is K4S561632.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510457505.5A CN105120394A (en) | 2015-07-30 | 2015-07-30 | Adaptively volume-adjusting WIFI sound box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510457505.5A CN105120394A (en) | 2015-07-30 | 2015-07-30 | Adaptively volume-adjusting WIFI sound box |
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| CN105120394A true CN105120394A (en) | 2015-12-02 |
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| CN201510457505.5A Pending CN105120394A (en) | 2015-07-30 | 2015-07-30 | Adaptively volume-adjusting WIFI sound box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124445A1 (en) * | 2016-01-23 | 2017-07-27 | 张阳 | Volume adjustment method and system for sound box device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427570A (en) * | 2011-11-29 | 2012-04-25 | 宁波东源音响器材有限公司 | Wireless sound box |
| CN102982823A (en) * | 2012-11-26 | 2013-03-20 | 中兴通讯股份有限公司 | Method and device for adjusting volume automatically |
| WO2015010031A1 (en) * | 2013-07-18 | 2015-01-22 | Harman International Industries, Inc. | Volume control rates |
| CN104796816A (en) * | 2015-02-13 | 2015-07-22 | 无锡市崇安区科技创业服务中心 | Automatic-switching WIFI intelligent sound box |
-
2015
- 2015-07-30 CN CN201510457505.5A patent/CN105120394A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427570A (en) * | 2011-11-29 | 2012-04-25 | 宁波东源音响器材有限公司 | Wireless sound box |
| CN102982823A (en) * | 2012-11-26 | 2013-03-20 | 中兴通讯股份有限公司 | Method and device for adjusting volume automatically |
| WO2015010031A1 (en) * | 2013-07-18 | 2015-01-22 | Harman International Industries, Inc. | Volume control rates |
| CN104796816A (en) * | 2015-02-13 | 2015-07-22 | 无锡市崇安区科技创业服务中心 | Automatic-switching WIFI intelligent sound box |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124445A1 (en) * | 2016-01-23 | 2017-07-27 | 张阳 | Volume adjustment method and system for sound box device |
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Application publication date: 20151202 |