CN202796050U - Audio frequency playing equipment - Google Patents
Audio frequency playing equipment Download PDFInfo
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- CN202796050U CN202796050U CN201220412301.1U CN201220412301U CN202796050U CN 202796050 U CN202796050 U CN 202796050U CN 201220412301 U CN201220412301 U CN 201220412301U CN 202796050 U CN202796050 U CN 202796050U
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- loudspeaker
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Abstract
Audio frequency playing equipment comprises an audio frequency decoding chip, a first audio frequency power amplifier chip, a second audio frequency power amplifier chip, and n pieces of speakers, and number n is an even number bigger than or equal to 4; the audio frequency decoding chip is used for converting obtained digital audio frequency information to analog audio frequency signals, low audio frequency zone signals of the analog audio frequency signals are transmitted to an anode port of the first audio frequency power amplifier chip, and high audio frequency zone signals of the analog audio frequency signals are transmitted to an anode port of the second audio frequency power amplifier chip; the first audio frequency power amplifier chip is used for amplifying the analog audio frequency signals, and the amplified signals are outputted to n/2 speakers for playing; and the second audio frequency power amplifier chip is used for amplifying the analog audio frequency signals, and the amplified signals are outputted to the remaining n/2 speakers for playing. The audio frequency playing equipment increases volume of a mobile terminal through a multi-speaker design of the mobile terminal, thereby improving timbre experience of mobile terminal loud speakers.
Description
Technical field
The utility model belongs to field of mobile terminals, relates in particular to a kind of audio-frequence player device.
Background technology
The loudspeaker of existing portable terminal are put design outward generally dual mode, first kind of way: the audio decoder chip converts the digitized audio message that obtains to simulated audio signal, simulated audio signal after the conversion outputs to the audio frequency effect from a left side or the R channel of audio decoder chip, output promoted single loudspeaker and sounds after simulated audio signal after the audio frequency effect will be changed amplified; The second way: the audio decoder chip converts the digitized audio message that obtains to simulated audio signal, simulated audio signal after the conversion respectively from about the audio decoder chip two monophonys output to the audio frequency effect, output promoted two loudspeaker and sends stereo sound after simulated audio signal after the audio frequency effect will be changed amplified.
Most portable terminals in the market all adopt first kind of way, but this mode only has the single sound channel transmission of audio signal of use, can't make the user experience stereophonic effect; Though two sound channel transmission of audio signals about the second way is used promote user's stereophonic effect and experience, volume is little.
Summary of the invention
The purpose of the utility model embodiment is to provide a kind of audio-frequence player device, is intended to solve the little defective of mobile terminal loudness.
A kind of audio-frequence player device comprises:
Audio decoder chip, the first audio frequency power amplifier chip, the second audio frequency power amplifier chip and n loudspeaker, described n is the even number more than or equal to 4;
The L channel output port of described audio decoder chip is connected with the anodal port of the first audio frequency power amplifier chip, the R channel output port of described audio decoder chip is connected with the anodal port of the second audio frequency power amplifier chip, and the grounding ports of described audio decoder chip is connected with described the first audio frequency power amplifier chip, described the second audio frequency power amplifier chip negative pole port respectively;
Wherein, the positive pole of each loudspeaker is connected with the anodal port of described the first audio frequency power amplifier chip in n/2 loudspeaker, and the negative pole of each loudspeaker is connected with described the first audio frequency power amplifier chip negative pole port in the described n/2 loudspeaker;
Wherein, the positive pole of each loudspeaker is connected with the anodal port of described the second audio frequency power amplifier chip in the remaining n/2 loudspeaker, and the negative pole of each loudspeaker is connected with described the second audio frequency power amplifier chip negative pole port in the described remaining n/2 loudspeaker.
Compared with prior art, the utility model embodiment improves mobile terminal loudness by the design of many loudspeaker of portable terminal, and the tonequality that the lifting mobile terminal is put is outward experienced.The audio decoder chip converts the digitized audio message that obtains to simulated audio signal, simulated audio signal after the conversion respectively from about the audio decoder chip two monophonys output to the audio frequency effect, output after simulated audio signal after the audio frequency effect will be changed amplifies, promote four each and every one loudspeaker and send stereo sound, promote thereby make portable terminal put overall loudness outward.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the below will do to introduce briefly to the accompanying drawing of required use among the embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of audio-frequence player device of providing of the utility model embodiment;
Fig. 2 is a kind of loudspeaker schematic layout pattern in portable terminal that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and example, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
The utility model embodiment provides a kind of audio-frequence player device, is intended to solve the little defective of mobile terminal loudness.As shown in Figure 1, this audio-frequence player device comprises:
In general, audio decoder is divided into two classes, and a class is the pure audio demoder for the Hi-Fi audition, after namely referring to the digital tone source equipment such as CD player are divided into two, removes the part of rotating disk (drive the laser disc rotation and read dish).The Main Function of pure audio demoder is that the digitized audio message that reads is converted to simulated audio signal output, resets for power amplification.Therefore say that strictly the pure audio demoder should be called the D/A(digital-to-analog) converter.Another kind of is the audio-visual demoder of AV, i.e. the usual said demoder that uses in " home theater " equipment, Main Function are to do the decoding reduction through the multichannel audio information of coding during recording, reset for power amplification after the D/A conversion.
A lot of two-channels or multichannel listen system for electrical teaching not dispose this class equipment of demoder, but equally also can reach the purpose that two-channel or multichannel are reset, why is this? why both of these case appears, it is not have numeral or the source of sound through encoding in the system that two kinds of reasons one are arranged, be that direct playback simulated audio signal (mostly is two-channel most usually, if " multichannel ", the pseudo-multichannel that just is concatenated into the binaural signal parallel connection); The 2nd, decoding function has been incorporated in the equipment such as source of sound or power amplifier, and for example CD player has comprised the D/A switch circuit, and the DVD player that has has comprised the digital decoding of certain class audio frequency form, and the digital decoding that has is built in the AV power amplifier.
The first audio frequency power amplifier 102 and the second audio frequency power amplifier 103 are used for the simulated audio signal after the described conversion is amplified rear output;
The effect of audio frequency power amplifier is the small signals amplification from source of sound or pre-amplifier, promotes the audio amplifier sound reproduction.The effect of the sound system power amplifier that one cover is good can not have.Audio frequency power amplifier can be described as in all kinds of sound appliances a maximum family, and its effect mainly is with behind the amplifying than feeble signal of source of sound equipment input, produces enough large electric current and goes to promote the playback that loudspeaker carries out sound.Because consider power, impedance, distortion, dynamically reach different usable range and regulating and controlling function, different power amplifiers each one on signal processing, line design and the production technology of inside is identical.
Wherein, the performance requirement of audio frequency power amplifier sound intermediate frequency power amplifier must reach the lower maximum power output more than 2 watts of 4 ohm load conditions.Mobile phone horn generally all is the lower maximum power outputs more than 2 watts of 8 ohm load conditions, in the utility model by designing respectively two loudspeaker at L channel and R channel to improve mobile phone volume, promote the tonequality experience that the user is put mobile phone outward, so in the design of audio frequency power amplifier, its performance requirement must reach the lower maximum power output more than 2 watts of 4 ohm load conditions, thereby could realize that left and right acoustic channels designs respectively the purpose of two loudspeaker.
Loudspeaker 1 104, loudspeaker 2 105, loudspeaker 3 106, loudspeaker 4 107 are used for converting the simulated audio signal after the described amplification to voice signal and output.
Loudspeaker are a kind of conversion equipment that a kind of electric energy converts sound in fact, when different electron energies reaches coil, coil produces the magnetic field interaction of a kind of energy and magnet, this interaction causes the paper disc vibration, because electron energy changes at any time, the coil of loudspeaker can be forward or backward motion, so the paper disc of loudspeaker will and then move, and this this action changes the density degree of air and produces sound.
The L channel output port of above-mentioned audio decoder chip is connected with the anodal port of the first audio frequency power amplifier chip, the R channel output port of described audio decoder chip is connected with the anodal port of the second audio frequency power amplifier chip, and the grounding ports of described audio decoder chip is connected with described the first audio frequency power amplifier chip, described the second audio frequency power amplifier chip negative pole port respectively;
L channel is used for transmitting the bass district signal of the simulated audio signal after the described conversion.L channel is the voice output that the audibility range of the left ear of simulating human in the electronic equipment produces, and is relative with R channel.Generally be that relevant bass district signal compression is play by this track, voice dialogue, transliteration are mostly in this sound channel.The stereo middle L channel of electronic equipment voice output and R channel can broadcast respectively identical or different sound, produce from left to right or the stereo sound variation effect that waits from right to left.Stereo except playing with the left and right sound channels track, after sound is carried out the analysis lift-off processing of deep layer, mid-audio frequency and supper bass audio tracks have been increased again, after this processing mode, the sense of hearing that sound is play is more clear mellow and full and judge accurately localization of sound, makes as on the spot in person.
L channel and R channel are respectively the master music sound channels in OK a karaoke club ok, and the several roads of owner, close wherein any one sound channel, and you will hear take music as main or take voice as main sound.You just can accompany like this.In monophony, L channel and R channel do not have any difference.
R channel is used for transmitting the high audio district signal of the simulated audio signal after the described conversion, and ground is used for preventing disturbing and the distorted signals when reducing described simulated audio signal output.
In circuit design, mainly be the distorted signals that prevents from disturbing when reducing signal output, ground is by extensively as the reference point of current potential, for whole circuit provides a reference potential.At this moment, ground wire may not link to each other with real the earth, and often with link to each other (normally zero line) of input power cord, its current potential and ground potential are irrelevant.Whole circuit is in when design, and the voltage on the ground wire is as 0V, with unified whole circuit current potential.
Wherein, the positive pole of each loudspeaker is connected with the anodal port of described the first audio frequency power amplifier chip in n/2 loudspeaker, and the negative pole of each loudspeaker is connected with described the first audio frequency power amplifier chip negative pole port in the described n/2 loudspeaker;
Wherein, the positive pole of each loudspeaker is connected with the anodal port of described the second audio frequency power amplifier chip in the remaining n/2 loudspeaker, and the negative pole of each loudspeaker is connected with described the second audio frequency power amplifier chip negative pole port in the described remaining n/2 loudspeaker;
In the present embodiment, above-mentioned audio-frequence player device is used for the annex of portable terminal or portable terminal.
In the present embodiment, n=4 in the said n loudspeaker.The performance requirement of the first audio frequency power amplifier chip 102 and the second audio frequency power amplifier chip 103 is: support 4 ohm load, and be issued to maximum power output more than 2 watts in 4 ohm load conditions.
Wherein, "+" "-" end that will be connected to described loudspeaker 1, loudspeaker 2, loudspeaker 3, loudspeaker 4 correspondences is held by "+" "-" of audio frequency power amplifier sound intermediate frequency power amplifier, can not connect instead, otherwise can be because the problems affect of single spin-echo arrives whole output volume.
Wherein, described audio decoder chip is used for converting the digitized audio message that obtains to simulated audio signal, bass district signal in the described simulated audio signal is transferred to the anodal port of the first audio frequency power amplifier chip and the anodal port that the high audio district signal in the described simulated audio signal is transferred to the second audio frequency power amplifier chip; The first audio frequency power amplifier chip is used for playing exporting to a described n/2 loudspeaker after the described simulated audio signal amplification; The second audio frequency power amplifier chip is used for playing exporting to described remaining n/2 loudspeaker after the described simulated audio signal amplification.
Loudspeaker 1 and loudspeaker 2 be placed in the same cavity or two independent cavitys in, above-mentioned loudspeaker 3 and loudspeaker 4 be placed in the same cavity or two independent cavitys in, above-mentioned loudspeaker 1 and loudspeaker 3 can not be placed in the same cavity, above-mentioned loudspeaker 2 and loudspeaker 4 can not be placed in the same cavity, above-mentioned loudspeaker 1 and loudspeaker 3 go out be separated by 5cm or more than the 5cm of sound distance, above-mentioned loudspeaker 2 and loudspeaker 4 go out be separated by 5cm or more than the 5cm of sound distance.Loudspeaker 1 and loudspeaker 2 are that the sound signal that L channel transmits is changed into voice signal and amplifies output, loudspeaker 3 and loudspeaker 4 are that the sound signal that R channel transmits is changed into the sound hobby and amplifies output, so, loudspeaker 1 and loudspeaker 2 are to put into simultaneously same cavity, loudspeaker 3 and loudspeaker 4 are to put into simultaneously same cavity, but loudspeaker 1 and loudspeaker 3, loudspeaker 2 and loudspeaker 4 can not be put into same cavity, avoid the sound of left and right acoustic channels mutually to obscure, affect tonequality and experience.Simultaneously, the distance between the Mobile phone horn is generally considered the size of mobile phone and the loudspeaker stereoeffect is set in 5cm or more than the 5cm.
The utility model embodiment provides a kind of audio-frequence player device, audio decoder chip 101 is used for converting the digitized audio message that obtains to simulated audio signal, bass district signal in the above-mentioned simulated audio signal is transferred to the anodal port of the first audio frequency power amplifier chip 102 and the anodal port that the high audio district signal in the described simulated audio signal is transferred to the second audio frequency power amplifier chip 103; The first audio frequency power amplifier chip 102 is used for playing exporting to above-mentioned 2 loudspeaker after the described simulated audio signal amplification; The second audio frequency power amplifier chip 103 is used for playing exporting to above-mentioned remaining 2 loudspeaker after the above-mentioned simulated audio signal amplification, sends stereo sound thereby promote four each and every one loudspeaker, makes mobile phone put overall loudness outward and promotes 6dB.
See also Fig. 2, Fig. 2 is a kind of loudspeaker schematic layout pattern in portable terminal that the utility model embodiment provides.
Wherein, loudspeaker 1 and loudspeaker 2 be placed in the same cavity or two independent cavitys in, above-mentioned loudspeaker 3 and loudspeaker 4 be placed in the same cavity or two independent cavitys in, above-mentioned loudspeaker 1 and loudspeaker 3 can not be placed in the same cavity, above-mentioned loudspeaker 2 and loudspeaker 4 can not be placed in the same cavity, above-mentioned loudspeaker 1 and loudspeaker 3 go out be separated by 5cm or more than the 5cm of sound distance, above-mentioned loudspeaker 2 and loudspeaker 4 go out be separated by 5cm or more than the 5cm of sound distance.Loudspeaker 1 and loudspeaker 2 are that the sound signal that L channel transmits is changed into voice signal and amplifies output, loudspeaker 3 and loudspeaker 4 are that the sound signal that R channel transmits is changed into the sound hobby and amplifies output, so, loudspeaker 1 and loudspeaker 2 are to put into simultaneously same cavity, loudspeaker 3 and loudspeaker 4 are to put into simultaneously same cavity, but loudspeaker 1 and loudspeaker 3, loudspeaker 2 and loudspeaker 4 can not be put into same cavity, avoid the sound of left and right acoustic channels mutually to obscure, affect tonequality and experience.Simultaneously, the distance between the Mobile phone horn is generally considered the size of mobile phone and the loudspeaker stereoeffect is set in 5cm or more than the 5cm.
More than provide the equipment of the many loudspeaker of a kind of portable terminal to be described in detail to the utility model embodiment, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (7)
1. an audio-frequence player device is characterized in that, comprising:
Audio decoder chip, the first audio frequency power amplifier chip, the second audio frequency power amplifier chip and n loudspeaker, described n is the even number more than or equal to 4;
The L channel output port of described audio decoder chip is connected with the anodal port of the first audio frequency power amplifier chip, the R channel output port of described audio decoder chip is connected with the anodal port of the second audio frequency power amplifier chip, and the grounding ports of described audio decoder chip is connected with described the first audio frequency power amplifier chip, described the second audio frequency power amplifier chip negative pole port respectively;
The positive pole of each loudspeaker is connected with the anodal port of described the first audio frequency power amplifier chip in n/2 loudspeaker, and the negative pole of each loudspeaker is connected with described the first audio frequency power amplifier chip negative pole port in the described n/2 loudspeaker;
Wherein, the positive pole of each loudspeaker is connected with the anodal port of described the second audio frequency power amplifier chip in the remaining n/2 loudspeaker, and the negative pole of each loudspeaker is connected with described the second audio frequency power amplifier chip negative pole port in the described remaining n/2 loudspeaker.
2. audio-frequence player device according to claim 1 is characterized in that, described audio-frequence player device is used for portable terminal or is used for the annex of portable terminal.
3. audio-frequence player device according to claim 1 and 2 is characterized in that,
Described audio decoder chip is used for converting the digitized audio message that obtains to simulated audio signal, bass district signal in the described simulated audio signal is transferred to the anodal port of the first audio frequency power amplifier chip and the anodal port that the high audio district signal in the described simulated audio signal is transferred to the second audio frequency power amplifier chip;
The first audio frequency power amplifier chip is used for playing exporting to a described n/2 loudspeaker after the described simulated audio signal amplification; The second audio frequency power amplifier chip is used for playing exporting to described remaining n/2 loudspeaker after the described simulated audio signal amplification.
4. audio-frequence player device as claimed in claim 3 is characterized in that, n=4 in the described n loudspeaker.
5. audio-frequence player device as claimed in claim 4 is characterized in that, the performance requirement of described the first audio frequency power amplifier chip and the second audio frequency power amplifier chip is: support 4 ohm load, and be issued to maximum power output more than 2 watts in 4 ohm load conditions.
6. audio-frequence player device as claimed in claim 5, it is characterized in that, "+" end of described the first audio frequency power amplifier chip is connected to "+" end of loudspeaker 1, loudspeaker 2 correspondences, and "-" end of the first audio frequency power amplifier chip is connected to "-" end of loudspeaker 1, loudspeaker 2 correspondences; "+" end of described the second audio frequency power amplifier chip is connected to "+" end of loudspeaker 3, loudspeaker 4 correspondences, and "-" end of the second audio frequency power amplifier chip is linked to "-" end of loudspeaker 3, loudspeaker 4 correspondences.
7. audio-frequence player device as claimed in claim 6, it is characterized in that, described loudspeaker 1 and loudspeaker 2 be placed in the same cavity or two independent cavitys in, described loudspeaker 3 and loudspeaker 4 be placed in the same cavity or two independent cavitys in, described loudspeaker 1 and loudspeaker 3 can not be placed in the same cavity, described loudspeaker 2 and loudspeaker 4 can not be placed in the same cavity, described loudspeaker 1 and loudspeaker 3 go out be separated by 5cm or more than the 5cm of sound distance, described loudspeaker 2 and loudspeaker 4 go out be separated by 5cm or more than the 5cm of sound distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220412301.1U CN202796050U (en) | 2012-08-20 | 2012-08-20 | Audio frequency playing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220412301.1U CN202796050U (en) | 2012-08-20 | 2012-08-20 | Audio frequency playing equipment |
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| Publication Number | Publication Date |
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| CN202796050U true CN202796050U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220412301.1U Expired - Lifetime CN202796050U (en) | 2012-08-20 | 2012-08-20 | Audio frequency playing equipment |
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| CN (1) | CN202796050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798777A (en) * | 2019-04-30 | 2020-02-14 | 广州市新度音响有限公司 | DSP power amplifier and sound system thereof |
-
2012
- 2012-08-20 CN CN201220412301.1U patent/CN202796050U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798777A (en) * | 2019-04-30 | 2020-02-14 | 广州市新度音响有限公司 | DSP power amplifier and sound system thereof |
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