CN112511954A - Stereo assembly and terminal equipment - Google Patents
Stereo assembly and terminal equipment Download PDFInfo
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- CN112511954A CN112511954A CN202011424445.4A CN202011424445A CN112511954A CN 112511954 A CN112511954 A CN 112511954A CN 202011424445 A CN202011424445 A CN 202011424445A CN 112511954 A CN112511954 A CN 112511954A
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- power amplifier
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- loudspeaker
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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
- H04R5/00—Stereophonic arrangements
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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
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure
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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
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/024—Positioning of loudspeaker enclosures for spatial sound reproduction
Abstract
The embodiment of the application provides a stereo subassembly and terminal equipment, and this stereo subassembly includes sound card, first power amplifier, first loudspeaker and second loudspeaker, wherein: the sound card is used for sending a first electric signal to the first power amplifier and sending a second electric signal to the second loudspeaker; the first loudspeaker is used for playing a first sound signal corresponding to the first electric signal, and the second loudspeaker is used for playing a second sound signal corresponding to the second electric signal. According to the scheme of the embodiment of the application, an external power amplifier can be saved, the stereo effect is achieved through audio playing on the two links, and the space occupation of the electronic equipment is small.
Description
Technical Field
The embodiment of the application relates to the technical field of electronic equipment, in particular to a stereo component and terminal equipment.
Background
With the development of network technology and the intellectualization of electronic equipment, a user can realize the stereo playing of audio through the electronic equipment.
The playing of stereo sound requires the electronic device to play audio through two different channels simultaneously. At present, the scheme is that the electronic equipment converts an audio signal into two electrical signals, and each electrical signal drives a corresponding loudspeaker through an external power amplifier respectively, so that the two loudspeakers play audio simultaneously. According to the scheme, the electronic equipment is required to be internally provided with two external power amplifiers and two loudspeakers respectively, and the space occupation of the electronic equipment is large.
Disclosure of Invention
The embodiment of the application provides a stereo component and terminal equipment, and aims to solve the problem that space occupation of electronic equipment is large when stereo playing is achieved by the conventional electronic equipment.
In a first aspect, an embodiment of the present application provides a stereo component, including a sound card, a first power amplifier, a first speaker and a second speaker, wherein:
the sound card is used for sending a first electric signal to the first power amplifier and sending a second electric signal to the second loudspeaker;
the first loudspeaker is used for playing a first sound signal corresponding to the first electric signal;
and the second loudspeaker is used for playing a second sound signal corresponding to the second electric signal.
In a possible implementation manner, the sound card includes a second power amplifier, where:
and the second power amplifier is used for sending the second electric signal to the second loudspeaker.
In a possible implementation manner, the second power amplifier is specifically configured to:
acquiring a third electrical signal;
and amplifying the third electrical signal to obtain the second electrical signal, and sending the second electrical signal to the second loudspeaker.
In a possible implementation manner, the sound card further includes a right channel, where:
the right channel is used for acquiring the first electric signal and sending the first electric signal to the first power amplifier.
In one possible implementation, the stereo component further includes a first headphone and a second headphone, and the sound card further includes a left channel, where:
the first earphone is connected with the right sound channel, and the second earphone is connected with the left sound channel;
the first earphone is used for receiving the first electric signal from the right sound channel and playing a third sound signal corresponding to the first electric signal;
the second earphone is used for receiving the third electric signal from the left sound channel and playing a fourth sound signal corresponding to the third electric signal.
In one possible implementation, the stereo assembly further includes a first switch, wherein:
the first switch is used for controlling connection or disconnection between the first earphone and the right channel.
In one possible implementation, the stereo assembly further includes a central processor connected to the sound card, wherein:
the central processing unit is used for acquiring an audio file and acquiring corresponding electric signals according to the audio file, wherein the electric signals comprise the first electric signal and the third electric signal;
sending the electrical signal to the sound card.
In one possible implementation manner, the central processing unit further includes a digital signal processing DSP module, where:
the central processor is specifically configured to acquire the audio file, decode the audio file to obtain a decoded audio file, and send the decoded audio file to the DSP module;
the DSP module is used for:
processing the decoded audio file to obtain the first electrical signal and the third electrical signal;
sending the first electrical signal and the third electrical signal to the sound card.
In a possible implementation manner, the first power amplifier is specifically configured to:
amplifying the first electrical signal to obtain a fourth electrical signal, and sending the fourth electrical signal to the first loudspeaker;
the first horn is specifically configured to:
and receiving the fourth electric signal, and playing the first sound signal according to the fourth electric signal.
In a second aspect, an embodiment of the present application provides a terminal device, including a stereo component as set forth in any one of the first aspect.
The embodiment of the application provides a stereo assembly and terminal equipment, wherein the stereo assembly comprises a sound card, a first power amplifier, a first loudspeaker and a second loudspeaker; the sound card is used for sending a first electric signal to the first power amplifier and sending a second electric signal to the second loudspeaker; the first loudspeaker is used for playing a first sound signal corresponding to the first electric signal, and the second loudspeaker is used for playing a second sound signal corresponding to the second electric signal. According to the scheme of the embodiment of the application, only one external power amplifier is needed, namely the first power amplifier is used for driving the first loudspeaker to achieve the playing of the audio frequency all the way, the playing of the audio frequency of the other way is achieved by driving the second loudspeaker through the sound card, so that the external power amplifier can be saved, the stereo effect is achieved, and the space of the terminal equipment is occupied to be smaller.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic view of a stereo assembly;
fig. 2 is a schematic structural diagram of a stereo component according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a stereo component according to another embodiment of the present application;
fig. 4 is a schematic diagram of a DSP module according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For ease of understanding, first, the concepts related to the present application will be explained.
Stereo: representing sound with a stereoscopic effect.
A CPU: central processing unit, central processor.
And (4) DSP: digital signal processing.
Power amplification: a Power Amplifier (PA) is a device that amplifies power and is used to amplify a weak electrical signal from a signal source to drive a speaker or a loudspeaker to produce sound.
A horn: also known as a loudspeaker (referred to as SPK), is an electroacoustic transducer device for converting an electrical signal into an acoustic signal.
Sound card: the device is a device for realizing the mutual conversion of sound waves and digital signals, and mainly has the function of converting original sound signals from a microphone, a magnetic tape, an optical disk and the like and outputting the converted sound signals to sound equipment such as an earphone, a loudspeaker and the like.
Fig. 1 is a schematic diagram of a stereo component, as shown in fig. 1, including a CPU11, a sound card 13, a power amplifier 14, a speaker 15, a power amplifier 16, a speaker 17, a left earphone 101, a right earphone 102, a switch 103, and a switch 104. The CPU11 includes a DSP module 12.
Fig. 1 illustrates a way of driving two loudspeakers by using two external power amplifiers to realize stereo, namely a power amplifier 14 and a power amplifier 16 in fig. 1, and two loudspeakers, namely a loudspeaker 15 and a loudspeaker 17 in fig. 1.
The CPU11 and the sound card 13 read the audio files through the DSP module 12 in the CPU11, and then separate the left channel and the right channel through audio mixing processing. The sound card 13 includes two channels, i.e., a left channel and a right channel, where each channel includes one electrical signal after audio mixing. The electric signals are respectively transmitted out from the left sound channel and the right sound channel, one path is transmitted to the path of the power amplifier 14 and the loudspeaker 15, and the other path is transmitted to the path of the power amplifier 16 and the loudspeaker 17.
After one path of electric signal is transmitted to the power amplifier 14, the electric signal is amplified by the power amplifier 14 and then sent to the loudspeaker 15, and the loudspeaker 15 is driven to play audio; and the other path of electric signal is transmitted to the power amplifier 16, amplified by the power amplifier 16 and then sent to the loudspeaker 17, and the loudspeaker 17 is driven to play audio. Since the audio played in the speakers 15 and 17 is transmitted through two different channels, a stereo effect can be achieved.
In fig. 1, stereo sound can also be achieved if headphones are inserted. The left headphone 101 is connected to the left channel to receive an electrical signal transmitted from the left channel, and the right headphone 102 is connected to the right channel to receive an electrical signal transmitted from the right channel. The left earphone 101 and the right earphone 102 are usually provided with power amplifiers to realize the normal playing of audio. Since the audio played in the left earphone 101 and the right earphone 102 is also transmitted through two different channels, a stereo effect can be achieved through the earphones.
In addition, in order to prevent the earphone from emitting sound after the hands-free mode is switched when the earphone is plugged in, two switches are usually arranged at the earphone end to control the function to be turned off in the scene. The switch 103 controls connection or disconnection between the left headphone 101 and the left channel, and the switch 104 controls connection or disconnection between the right headphone 102 and the right channel.
According to the scheme, the electronic equipment is required to be internally provided with two external power amplifiers and two loudspeakers respectively, and the space occupation of the electronic equipment is large.
To solve the above problem, embodiments of the present application provide a new stereo implementation scheme. The solution of the present application will be described below with reference to the accompanying drawings.
Fig. 2 is a schematic structural diagram of a stereo component provided in an embodiment of the present application, and as shown in fig. 2, includes a sound card 20, a first power amplifier 21, a first speaker 22, and a second speaker 23, where:
the sound card 20 is configured to send a first electrical signal to the first power amplifier 21, and send a second electrical signal to the second speaker 23;
the first speaker 22 is configured to play a first sound signal corresponding to the first electrical signal;
the second speaker 23 is configured to play a second sound signal corresponding to the second electrical signal.
In the embodiment of the present application, only one external power amplifier is provided, that is, the first power amplifier 21. The sound card 20 sends a first electrical signal to the first power amplifier 21 through the first link 24, and the first power amplifier 21 drives the first speaker 22 to play the first sound signal through the first electrical signal. On the first link 24, the first speaker 22 is driven by the first power amplifier 21 to realize the audio playing.
The second link 25 is a link between the sound card 20 and the second loudspeaker 23, the sound card 20 sends a second electrical signal to the second loudspeaker 23 through the second link 25, and the second loudspeaker 23 plays the second audio signal according to the second electrical signal. Wherein, on the second link 25, the second speaker 23 is directly driven by the sound card 20 to realize the playing of the audio.
The stereo assembly provided by the embodiment of the application comprises a sound card, a first power amplifier, a first loudspeaker and a second loudspeaker; the sound card is used for sending a first electric signal to the first power amplifier and sending a second electric signal to the second loudspeaker; the first loudspeaker is used for playing a first sound signal corresponding to the first electric signal, and the second loudspeaker is used for playing a second sound signal corresponding to the second electric signal. According to the scheme of the embodiment of the application, only one external power amplifier is needed, namely the first power amplifier is used for driving the first loudspeaker to achieve the playing of the audio of one path, the playing of the audio of the other path is achieved by driving the second loudspeaker through the sound card, so that the external power amplifier can be saved, the stereo effect is achieved, and the space of the electronic equipment is occupied to a small extent.
The embodiments of the present application will be described in detail with reference to specific examples.
Fig. 3 is a schematic structural diagram of a stereo component according to another embodiment of the present application, as shown in fig. 3, including a sound card 20, a first power amplifier 21, a first speaker 22, and a second speaker 23.
The sound card 20 includes a second power amplifier 31, and the second power amplifier 31 is connected to the second speaker 23 through the second link 25. The second power amplifier 31 is configured to send a second electrical signal to the second speaker 23, so as to drive the second speaker 23 to play a second audio signal corresponding to the second electrical signal.
The second power amplifier 31 is a power amplifier provided in the sound card 20. Inside the sound card 20, there may be provided a plurality of power amplifiers, of which the second power amplifier 31 is one. In the embodiment of the present application, the sound card 20 drives the second speaker to play the second sound signal through the second electric signal, which is implemented through the second power amplifier 31.
The second power amplifier 31 is connected to the second speaker 23 through the second link 25, and the second power amplifier 31 sends a second electrical signal to the second speaker 23 through the second link to drive the second speaker 23 to play a second audio signal.
Wherein the second electrical signal is the electrical signal processed by the second power amplifier 31. Specifically, the second power amplifier 31 first obtains the third electrical signal, then amplifies the third electrical signal to obtain the second electrical signal, and then sends the second electrical signal to the second speaker 23. After the second speaker 23 receives the second electrical signal, it can play a second sound signal corresponding to the second electrical signal.
In fig. 3, the reason why the second speaker 23 is driven by the second power amplifier 31 to play the second sound signal is that if the third electrical signal is directly sent to the second speaker 23 without being processed, although the second speaker 23 can also convert the third electrical signal into a corresponding sound signal to play, since the third electrical signal is very weak, the converted sound signal is also weak, and when the third electrical signal is externally played, the sound is very small.
Therefore, before the third electrical signal is sent to the second speaker 23, the third electrical signal is amplified by the second power amplifier 31 to obtain the second electrical signal. The second electrical signal is an electrical signal obtained by amplifying a weak third electrical signal, and after the second electrical signal is received by the second speaker 23, the second electrical signal is converted into a corresponding second sound signal for playing.
As shown in fig. 3, in the sound card 20, a left channel and a right channel are also included. The right channel is connected to a first power amplifier 21 via a first link 24. The right channel is used to obtain the first electrical signal and send the first electrical signal to the first power amplifier 21.
The first power amplifier 21 is configured to drive the first speaker 22 to play the first sound signal according to the first electrical signal. Specifically, after obtaining the first electrical signal, the first power amplifier 21 amplifies the first electrical signal to obtain a fourth electrical signal, and sends the fourth electrical signal to the first speaker 22. The first speaker 22 receives the fourth electrical signal sent by the first power amplifier 21, and plays the corresponding first sound signal according to the fourth electrical signal.
If the first electrical signal is directly sent to the first speaker 22 without processing, although the first speaker 22 can also convert the first electrical signal into a corresponding sound signal for playing, since the first electrical signal is very weak, the sound signal obtained after conversion is also weak, and when the sound signal is played externally, the sound is very small.
Therefore, similarly, in fig. 3, the principle of driving the first speaker 22 to play the first sound signal through the first power amplifier 21 is that, before the first electrical signal is sent to the first speaker 22, the first electrical signal is amplified through the first power amplifier 21 to obtain a fourth electrical signal.
The fourth electrical signal is an electrical signal obtained by amplifying the weak first electrical signal, and after the fourth electrical signal is received by the first speaker 22, the fourth electrical signal is converted into a corresponding first sound signal to be played.
In the stereo assembly illustrated in fig. 3, a CPU32 is also included, and a CPU32 is connected to sound card 20. The CPU32 is configured to retrieve an audio file and obtain corresponding electrical signals from the audio file, the electrical signals including a first electrical signal and a third electrical signal. Then, the CPU32 sends the electric signal to the sound card 20. Here, when the stereo module in the embodiment of the present application is mounted in a terminal device, the CPU32 may read the above-described audio file by reading a memory card mounted in the terminal device.
Optionally, the CPU32 further includes a DSP module 33. The CPU32 user acquires an audio file, decodes the audio file to obtain a decoded audio file, and sends the decoded audio file to the DSP module 33.
The DSP module 33 is configured to process the decoded audio file to obtain a first electrical signal and a third electrical signal, and send the first electrical signal and the third electrical signal to the sound card 20.
Specifically, in the internal circuit of the sound card 20, the second power amplifier 31 built in the sound card 20 is connected to the internal left channel, and the external first power amplifier 21 is connected to the right channel, so that the electrical signal outputs of the two channels are controlled by the second power amplifier 31 built in the sound card 20 and the external first power amplifier 21 respectively.
Because the electrical signals received by the first power amplifier 21 and the second power amplifier 31 are from different sound channels, the sound signals played after the received electrical signals are amplified and transmitted to the corresponding loudspeakers respectively are from different sound channels, thereby realizing the stereo effect.
In the above embodiment, the first speaker is driven by the first power amplifier 21 to play the first sound signal, and the second speaker 23 is driven by the second power amplifier 31 to play the second sound signal, which are both described as stereo implementations when audio is played.
When the stereo components are mounted inside the terminal device, the user may also listen to the audio by plugging in headphones. When a user listens to audio by inserting headphones, it is also necessary to implement a stereo effect to meet the user's higher demand. Thus, in the stereo assembly illustrated in fig. 3, a first headphone 34 and a second headphone 35 are also included.
The first earpiece 34 and the second earpiece 35 are two component parts of an earpiece, typically a left earpiece and a right earpiece. When the first earphone 34 is a left earphone, the second earphone 35 is a right earphone; when the first earphone 34 is a right earphone, the second earphone 35 is a left earphone.
In order to achieve a stereo effect when the headphones are inserted, the electrical signals received by the first headphone 34 and the second headphone 35 should be from different channels. In the embodiment of the present application, the first headphone 34 is connected to the right channel, and the second headphone 35 is connected to the left channel.
In the above embodiment, it has been pointed out that, in the internal circuit of the sound card 20, the second power amplifier 31 built in the sound card 20 is connected to the internal left channel, and the second earphone 35 is connected to the left channel, so that the electrical signals received by the second earphone 35 and the second speaker 23 are both finally from the left channel inside the sound card 20. The difference is that the electrical signal from the left channel received by the second speaker 23 is an electrical signal amplified by the second power amplifier 31, and the electrical signal from the left channel received by the second earphone 35 is an electrical signal without amplification by the power amplifier. Since the second earphone 35 is internally provided with a power amplifier, the second earphone 35 directly receives the electric signal from the left channel.
The external first power amplifier 21 is connected to the right channel, wherein the electrical signal received by the first power amplifier 21 comes from the right channel of the sound card 20, and the first earphone 34 is connected to the right channel, so that the electrical signal received by the first earphone 34 comes from the right channel of the sound card 20. The electrical signal outputs of the two channels are thus controlled by the first headphone 34 and the second headphone 35, respectively.
Specifically, the first earphone 34 is configured to receive a first electrical signal from the right channel and play a corresponding third sound signal according to the first electrical signal;
the second headphone 35 is configured to receive the third electrical signal from the left channel and play a corresponding fourth sound signal according to the third electrical signal.
Meanwhile, in order to prevent the earphone from making sound after the earphone is switched to the hands-free mode in the incoming call answering state when the earphone is inserted into the terminal equipment, a switch can be arranged at the earphone end and used for controlling the function of closing the earphone in the scene.
Specifically, in fig. 3, a first switch 36 is further included, wherein:
the first switch 36 is used to control the connection or disconnection between the first headphone 34 and the right channel.
When the terminal device is in the hands-free state and the first switch 36 is in the off state, the first earphone 34 cannot acquire the electric signal from the sound card 20, and the first earphone 34 cannot emit sound.
When the terminal device is not in the hands-free state and the first switch 36 is in the closed state, the first earphone 34 can acquire the electric signal from the sound card 20, and the first earphone 34 can emit sound.
Fig. 4 is a schematic diagram of a DSP module provided in an embodiment of the present application, and as shown in fig. 4, a structure of the DSP module is illustrated, where the DSP module includes various components, such as an arithmetic unit and the like. In the embodiments of the present application, specific components of the DSP module are not described.
And reading the audio file and decoding the audio file by the CPU to obtain the decoded audio file, and then performing file interpretation on the decoded audio file, matching the decoded audio file with the first loudspeaker and the second loudspeaker and performing sound effect adjustment.
In the DSP module, the adjustment of the stereo module is configured. Wherein, the first type arrow in fig. 4 indicates the transmission direction of the audio signal of the first link after the channels of the first link and the second link are separated, the audio signal is input to the first position at the lowest (position CDC _ PDM _ RX 2), and the modules before CDC _ PDM _ RX2 are all turned off, preventing remixing again. And then inputting the first electric signal at the position of CDC _ PDM _ RX2 to the sound card, and finally outputting the first electric signal to an external first power amplifier.
The second arrow in fig. 4 indicates the transmission direction of the audio signal of the second link after the channel separation of the first link and the second link, which is input to the second location (CDC _ PDM _ RX1 location). Then, the signal at the position of the CDC _ PDM _ RX1 is input to a second power amplifier in the sound card, and then is amplified by the second power amplifier to obtain a second electric signal, and then is output to an external second loudspeaker.
The stereo assembly provided by the embodiment of the application comprises a sound card, a first power amplifier, a first loudspeaker and a second loudspeaker; the sound card is used for sending a first electric signal to the first power amplifier and sending a second electric signal to the second loudspeaker; the first loudspeaker is used for playing a first sound signal corresponding to the first electric signal, and the second loudspeaker is used for playing a second sound signal corresponding to the second electric signal. According to the scheme of the embodiment of the application, only one external power amplifier is needed, namely the first power amplifier is used for driving the first loudspeaker to achieve the playing of the audio of one path, the playing of the audio of the other path is achieved by driving the second loudspeaker through the sound card, so that the external power amplifier can be saved, the stereo effect is achieved, and the space of the electronic equipment is occupied to a small extent.
Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application, as shown in fig. 5, the terminal device includes a stereo component 51, and the structure and implementation principle of the stereo component 51 can be referred to the above embodiment.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The utility model provides a stereo subassembly which characterized in that, includes sound card, first power amplifier, first loudspeaker and second loudspeaker, wherein:
the sound card is used for sending a first electric signal to the first power amplifier and sending a second electric signal to the second loudspeaker;
the first loudspeaker is used for playing a first sound signal corresponding to the first electric signal;
and the second loudspeaker is used for playing a second sound signal corresponding to the second electric signal.
2. The stereo assembly of claim 1, wherein the sound card includes a second power amplifier therein, wherein:
and the second power amplifier is used for sending the second electric signal to the second loudspeaker.
3. The stereo assembly of claim 2, wherein the second power amplifier is specifically configured to:
acquiring a third electrical signal;
and amplifying the third electrical signal to obtain the second electrical signal, and sending the second electrical signal to the second loudspeaker.
4. The stereo assembly of claim 3, further comprising a right channel in the sound card, wherein:
the right channel is used for acquiring the first electric signal and sending the first electric signal to the first power amplifier.
5. The stereo assembly of claim 4, further comprising a first headset and a second headset, and a left channel in the sound card, wherein:
the first earphone is connected with the right sound channel, and the second earphone is connected with the left sound channel;
the first earphone is used for receiving the first electric signal from the right sound channel and playing a third sound signal corresponding to the first electric signal;
the second earphone is used for receiving the third electric signal from the left sound channel and playing a fourth sound signal corresponding to the third electric signal.
6. The stereo assembly of claim 5, further comprising a first switch, wherein:
the first switch is used for controlling connection or disconnection between the first earphone and the right channel.
7. The stereo assembly of any one of claims 3 to 6, further comprising a central processor connected to the sound card, wherein:
the central processing unit is used for acquiring an audio file and acquiring corresponding electric signals according to the audio file, wherein the electric signals comprise the first electric signal and the third electric signal;
sending the electrical signal to the sound card.
8. The stereo assembly of claim 7, wherein the central processor further comprises a Digital Signal Processing (DSP) module, wherein:
the central processor is specifically configured to acquire the audio file, decode the audio file to obtain a decoded audio file, and send the decoded audio file to the DSP module;
the DSP module is used for:
processing the decoded audio file to obtain the first electrical signal and the third electrical signal;
sending the first electrical signal and the third electrical signal to the sound card.
9. The stereo assembly of any one of claims 1-8, wherein the first power amplifier is specifically configured to:
amplifying the first electrical signal to obtain a fourth electrical signal, and sending the fourth electrical signal to the first loudspeaker;
the first horn is specifically configured to:
and receiving the fourth electric signal, and playing the first sound signal according to the fourth electric signal.
10. A terminal device, characterized in that it comprises a stereo module according to any of claims 1-9.
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| CN202011424445.4A CN112511954A (en) | 2020-12-08 | 2020-12-08 | Stereo assembly and terminal equipment |
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| CN202011424445.4A CN112511954A (en) | 2020-12-08 | 2020-12-08 | Stereo assembly and terminal equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113115178A (en) * | 2021-05-12 | 2021-07-13 | 西安易朴通讯技术有限公司 | Audio signal processing method and device |
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Application publication date: 20210316 |