CN207926903U - A kind of stereo set and its audio signal transmission circuit - Google Patents
A kind of stereo set and its audio signal transmission circuit Download PDFInfo
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- CN207926903U CN207926903U CN201820238156.7U CN201820238156U CN207926903U CN 207926903 U CN207926903 U CN 207926903U CN 201820238156 U CN201820238156 U CN 201820238156U CN 207926903 U CN207926903 U CN 207926903U
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Abstract
The utility model discloses a kind of stereo set and its audio signal transmission circuits, the audio signal transmission circuit is connected between audio signal amplification module and loudspeaker, it includes audio signal input end, audio signal frequency unit and audio signal output end, one end of audio signal input end is connect with the output end of audio signal amplification module, the other end of audio signal input end is connect with the input terminal of audio signal frequency unit, the output end of audio signal frequency unit and one end of audio signal output end connect, the other end of audio signal output end is connect with loudspeaker；By the way that traditional tangible horn wire transmission form is replaced with pcb board transmission form, and integrated audio signal frequency split unit, be conducive to save the arrangement space inside stereo set；And the impedance of audio signal transmission is effectively controlled, and avoids vibration phenomenon, effectively promotes the acoustical quality of stereo set.
Description
Technical field
The utility model belongs to a kind of stereo set, is concretely related to a kind of stereo set and its audio signal transmission electricity
Road.
Background technology
With the portability requirements to stereo set, the overall appearance of stereo set increasingly tends to Miniaturization Design, because
This, for most of portable audio equipment, internal speaker space is usually than narrow, and the loudspeaker inside speaker
It is larger that line occupies volume so that effective sounding space of speaker becomes smaller, and the sounding space then bass effect that becomes smaller is poor；And loudspeaker
Line can not be fixed in babinet, also easy to produce vibration phenomenon, this will largely effect on the acoustical quality of stereo set.
Utility model content
In view of the presence of problem above, the utility model provides a kind of audio signal transmission circuit, is connected to audio signal
Between amplification module and loudspeaker, the audio signal transmission circuit include audio signal input end, audio signal frequency unit and
Audio signal output end, one end of the audio signal input end are connect with the output end of the audio signal amplification module, institute
The other end for stating audio signal input end is connect with the input terminal of the audio signal frequency unit, and the audio signal frequency dividing is single
The output end of member and one end of audio signal output end connect, and the other end of the audio signal output end connects with the loudspeaker
It connects.
Further：The loudspeaker include high-pitched speaker and woofer, and the audio signal output end includes high-frequency signal
Output end and low frequency signal output end, the high-frequency signal output end are connect with the high-pitched speaker, the low frequency signal output
End is connect with the woofer.
Further：The audio signal frequency unit includes capacitance, and one end of the capacitance is inputted with the audio signal
End connection, the other end of the capacitance are connect with the high-frequency signal output end；One end of the low frequency signal output end and sound
Frequency signal input part connects, and the other end of the low frequency signal output end is connect with the woofer.
Further：The capacitance of the capacitance is less than or equal to 10 μ F.
Further：The audio signal input end is 2 foots, and the audio signal output end is 4 foots, the sound
Frequency signal input part includes audio signal input terminal and common end, the audio signal output end include high-frequency signal terminal,
Low frequency signal terminal and two common ends, the audio signal input terminal are connected respectively by the audio signal frequency unit
Be connected to the high-frequency signal terminal and low frequency signal terminal, the common end be respectively connected to after being serially connected high-pitched speaker and
Woofer.
In addition, to solve the above-mentioned problems, the utility model additionally provides a kind of stereo set, which includes case
Body and audio signal amplification module, loudspeaker and audio signal transmission pcb board in box house are set, the audio signal transmission
Pcb board is connected between the audio signal amplification module and loudspeaker, and the audio signal transmission pcb board includes above-mentioned audio letter
Number transmission circuit.
Further：The thickness of the audio signal transmission pcb board is 0.8-1mm.
Further：The audio signal transmission pcb board is adhesively fixed on the cabinet wall.
Advantageous effect
The utility model has the beneficial effects that：The audio signal transmission circuit be typically be laid out in pcb board, only need by
Audio signal input end is arranged in one end of the close audio signal amplification module of pcb board, and audio signal amplification module has been handled
Audio signal introduce, signal transmission part all completes to transmit by cabling on pcb board；In pcb board close to loudspeaker
Audio signal output end is arranged in one end, and audio signal is led to loudspeaker, then pushes sound horn.And the pcb board also collects
At audio signal frequency unit so that high and low frequency audio signal is transmitted separately to corresponding loudspeaker, promotes the sound of stereo set
Matter effect.By the way that traditional tangible horn wire transmission form is replaced with pcb board transmission form, and integrated audio signal frequency split
Unit is conducive to save the arrangement space inside stereo set；And the impedance of audio signal transmission is effectively controlled, and avoids
Vibration phenomenon effectively promotes the acoustical quality of stereo set.
Description of the drawings
Fig. 1 is the circuit structure connection diagram of the utility model stereo set.
Specific implementation mode
As a kind of embodiment of the utility model, as shown in Figure 1, the audio signal transmission circuit 10 is connected to audio
Between signal amplification module 20 and loudspeaker 30, which includes audio signal input end COM1, audio letter
One end and the audio signal of number frequency unit and audio signal output end COM2, the audio signal input end COM1 are put
The output end connection of big module 20, the other end of the audio signal input end COM1 are defeated with the audio signal frequency unit
Enter end connection, the output end of the audio signal frequency unit is connect with one end of audio signal output end COM2, the audio
The other end of signal output end COM2 is connect with the loudspeaker 30.
In the present embodiment, which is commonly used in stereo set, the audio of the stereo set
Signal is transmitted to loudspeaker 30 after 20 power amplification of audio signal amplification module processing by the audio signal transmission circuit 10,
It is made a sound by loudspeaker 30.The audio signal transmission circuit 10 is typically to be laid out in pcb board, only need to be by the close sound of pcb board
Audio signal input end COM1, the audio that audio signal amplification module 20 has been handled is arranged in one end of frequency signal amplification module 20
Signal introduces, and transmission is all completed in signal transmission part by the cabling on pcb board；In pcb board close to one end of loudspeaker 30
Audio signal output end COM2 is set, audio signal is led into loudspeaker 30, then pushes 30 sounding of loudspeaker.And the pcb board
Also it is integrated with audio signal frequency unit so that high and low frequency audio signal is transmitted separately to corresponding loudspeaker 30, promotes sound equipment and sets
Standby acoustical quality.By the way that traditional tangible horn wire transmission form is replaced with pcb board transmission form, and integrated audio is believed
Number frequency unit is conducive to save the arrangement space inside stereo set；And the impedance of audio signal transmission is effectively controlled
System, avoids vibration phenomenon, effectively promotes the acoustical quality of stereo set.
Specifically, which includes high-pitched speaker 32 and woofer 31, and the audio signal output end COM2 includes
High-frequency signal output end and low frequency signal output end, the high-frequency signal output end is connect with the high-pitched speaker 32, described low
Frequency signal output end is connect with the woofer 31.
The audio signal introduced from audio signal input end COM1 is subjected to frequency partition by audio signal frequency unit,
It is divided into high-frequency signal and low frequency signal, high-frequency signal, which is corresponded to, to be exported from high-frequency signal output end to high-pitched speaker 32, low frequency letter
Number correspondence exported from low frequency signal output end to woofer 31.
Specifically, the audio signal frequency unit includes capacitance C1, one end and the audio signal of the capacitance C1
Input terminal COM1 connections, the other end of the capacitance C1 are connect with the high-frequency signal output end；The low frequency signal output end
One end connect with audio signal input end COM1, the other end of the low frequency signal output end connects with the woofer 31
It connects.Capacitance C1 is preferably using the capacitance less than or equal to 10 μ F.
Woofer 31 is big to high-frequency audio signal impedance, so the high-frequency audio signal comparison of ingredients issued is few.Cause
This, is directly transmitted to woofer by the audio signal that audio signal input end COM1 is introduced by audio signal output end COM2
31, so that it may to realize the broadcasting of low-frequency audio signal.
And the stroke of high-pitched speaker 32 is small, vibrating diaphragm is thin, is typically only capable to send out high-frequency audio signal, if there is low frequency audio is believed
Number transmission come in, then be easier to be burned.According to the charge-discharge principle of capacitance C1, capacitance is small, and the time of charge and discharge is short, then high frequency
Signal is easy to be transmitted to high-pitched speaker 32 by capacitance C1, and low frequency signal is just kept apart by capacitance C1, therefore, passes through sound
The capacitance C1 of frequency signal frequency split unit can effective filter out low frequency signal so that there was only high frequency section audio signal transmission extremely
High-pitched speaker 32.
Specifically, the audio signal input end COM1 is 2 foots, and the audio signal output end COM2 is 4 foots
Son, the audio signal input end COM1 include audio signal input terminal and common end, the audio signal output end COM2
Including high-frequency signal terminal, low frequency signal terminal and two common ends, audio signal input end COM1 pass through described
Audio signal frequency unit is respectively connected to the high-frequency signal terminal and low frequency signal terminal, and the common end is serially connected
After be respectively connected to high-pitched speaker 32 and woofer 31.
The utility model also provides a kind of stereo set, which includes babinet and be arranged audio in box house
Signal amplification module 20, loudspeaker 30 and audio signal transmission pcb board, the audio signal transmission pcb board are connected to the audio
Between signal amplification module 20 and loudspeaker 30, the thickness of the audio signal transmission pcb board is preferably 0.8-1mm, in this way can be by PCB
The copper sheet of plate is coated with thickness and then can be controlled within the scope of certain numerical value, you can the effectively impedance of control audio signal transmission, and profit
In the fixation of pcb board.The pcb board is fixed on by bonding way on the cabinet wall, and pcb board fixed position is typically remote from sound
The other elements inside equipment are rung, in order to avoid cause to interfere；Pcb board is fixed by bonding way, also avoids transportational process simultaneously
In the process that occurs falling phenomenon, and eliminate conventional horn line packet cotton.
Specifically, which includes audio signal transmission circuit.The knot of the audio signal transmission circuit
Structure, operation principle and caused advantageous effect, with reference to above-described embodiment, details are not described herein.
Claims (8)
1. a kind of audio signal transmission circuit is connected between audio signal amplification module and loudspeaker, which is characterized in that including sound
Frequency signal input part, audio signal frequency unit and audio signal output end, one end of the audio signal input end and institute
The output end connection of audio signal amplification module is stated, the other end of the audio signal input end and audio signal frequency dividing are single
The input terminal connection of member, the output end of the audio signal frequency unit and one end of audio signal output end connect, the sound
The other end of frequency signal output end is connect with the loudspeaker.
2. audio signal transmission circuit according to claim 1, which is characterized in that the loudspeaker include high-pitched speaker and low
Sound loudspeaker, the audio signal output end include high-frequency signal output end and low frequency signal output end, the high-frequency signal output
End is connect with the high-pitched speaker, and the low frequency signal output end is connect with the woofer.
3. audio signal transmission circuit according to claim 2, which is characterized in that the audio signal frequency unit includes
Capacitance, one end of the capacitance are connect with the audio signal input end, and the other end of the capacitance and the high-frequency signal are defeated
Outlet connects；One end of the low frequency signal output end is connect with audio signal input end, the low frequency signal output end it is another
One end is connect with the woofer.
4. audio signal transmission circuit according to claim 3, which is characterized in that the capacitance of the capacitance is less than or equal to
10μF。
5. audio signal transmission circuit according to claim 3 or 4, which is characterized in that the audio signal input end is 2
Foot, the audio signal output end are 4 foots, and the audio signal input end includes audio signal input terminal and public affairs
End altogether, the audio signal output end include high-frequency signal terminal, low frequency signal terminal and two common ends, the audio letter
Number input terminal is respectively connected to the high-frequency signal terminal and low frequency signal terminal, institute by the audio signal frequency unit
It states after common end is serially connected and is respectively connected to high-pitched speaker and woofer.
6. a kind of stereo set, which is characterized in that including babinet and audio signal amplification module, loudspeaker in box house are arranged
With audio signal transmission pcb board, the audio signal transmission pcb board be connected to the audio signal amplification module and loudspeaker it
Between, the audio signal transmission pcb board includes the audio signal transmission circuit described in any one of claim 1 to 5.
7. stereo set according to claim 6, which is characterized in that the thickness of the audio signal transmission pcb board is
0.8-1mm。
8. stereo set according to claim 7, which is characterized in that the audio signal transmission pcb board is adhesively fixed on
On the cabinet wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820238156.7U CN207926903U (en) | 2018-02-10 | 2018-02-10 | A kind of stereo set and its audio signal transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820238156.7U CN207926903U (en) | 2018-02-10 | 2018-02-10 | A kind of stereo set and its audio signal transmission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926903U true CN207926903U (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820238156.7U Active CN207926903U (en) | 2018-02-10 | 2018-02-10 | A kind of stereo set and its audio signal transmission circuit |
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| Country | Link |
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| CN (1) | CN207926903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788401A (en) * | 2018-02-10 | 2019-05-21 | 中山市悦辰电子实业有限公司 | A kind of stereo set and its audio signal transmission circuit |
-
2018
- 2018-02-10 CN CN201820238156.7U patent/CN207926903U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788401A (en) * | 2018-02-10 | 2019-05-21 | 中山市悦辰电子实业有限公司 | A kind of stereo set and its audio signal transmission circuit |
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