CN218352713U - Sound card musical instrument sound box - Google Patents
Sound card musical instrument sound box Download PDFInfo
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- CN218352713U CN218352713U CN202222919293.6U CN202222919293U CN218352713U CN 218352713 U CN218352713 U CN 218352713U CN 202222919293 U CN202222919293 U CN 202222919293U CN 218352713 U CN218352713 U CN 218352713U
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Abstract
The utility model discloses a sound card musical instrument audio amplifier, including bluetooth audio module, preamplifier and power amplifier and speaker, this bluetooth audio module's audio output connects the speaker through preamplifier, power amplifier in proper order, and preamplifier signal connection has in-recording interface, earphone interface and audio input interface. The preamplifier can receive the Bluetooth audio module and analog audio signals input by the recording interface or the audio input interface, and the analog audio signals are processed by the preamplifier and the power amplifier in sequence and then drive the loudspeaker to emit corresponding sound signals, so that diversified sound source input of the sound box is realized. Meanwhile, the preamplifier can process the received analog audio signal and transmit the processed analog audio signal to the internal recording interface or the earphone interface, and then transmit the processed analog audio signal to a mobile phone connected with the internal recording interface or an earphone connected with the earphone interface, so that diversified sound source output of the sound box is realized.
Description
Technical Field
The utility model relates to a circuit arrangement technical field of speaker, concretely relates to sound card musical instrument audio amplifier.
Background
At present, some mini sound boxes in the market have the defects of monotonous functions, low integration level, high power consumption, short working time, unsatisfactory sound effect, inconvenient use and the like due to volume limitation. The patent with the publication number of CN211063776U discloses a KS-2 multifunctional K song sound system, and particularly discloses that the system comprises a human voice input terminal, an external sound source input terminal, an external control terminal, a KS-2 multifunctional K song sound box and BASS equipment, wherein the external control terminal is in wireless connection with a control module through infrared rays, the output end of the human voice input terminal is in wireless connection with the input end of the control module, and the output end of the external sound input terminal is connected with the input end of the control module through an interface.
The sound system realizes various sound source input modes through the arranged external sound source input interfaces, and can be conveniently connected with various devices such as a mobile phone, a flat panel, an intelligent television, other intelligent audio and video devices and the like. However, the output interface is single, and only the speaker is connected, so that the sound source output modes cannot be diversified.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a sound card musical instrument audio amplifier. The sound source input mode can be diversified, and the sound source output mode can be diversified. The specific technical scheme is as follows:
in a first implementation mode, the sound card musical instrument sound box comprises a Bluetooth audio module, a preamplifier, a power amplifier and a loudspeaker, wherein an audio output end of the Bluetooth audio module is connected with the loudspeaker through the preamplifier and the power amplifier in sequence, and the preamplifier is in signal connection with an internal recording interface, an earphone interface and an audio input interface.
With reference to the first implementable manner, in a second implementable manner, the control terminals of the preamplifier and the power amplifier are respectively connected with the control signal output terminal of the bluetooth audio module.
With reference to the first implementable manner, in a third implementable manner, the bluetooth audio module further includes a usb disk interface, and the usb disk interface is in signal connection with the bluetooth audio module.
With reference to the first implementation manner, in a fourth implementation manner, the bluetooth audio module further includes a key panel, and the key panel is in signal connection with the bluetooth audio module.
In combination with the first implementation manner, in a fifth implementation manner, the battery further includes a battery, and the battery is connected with a charging interface through a charging module.
In combination with the first implementable manner, in a sixth implementable manner, the bluetooth audio-frequency remote control system further comprises a short-wave remote control receiving module, and the short-wave remote control receiving module is in signal connection with the bluetooth audio-frequency module.
Has the advantages that: adopt the utility model discloses a sound card musical instrument audio amplifier through bluetooth audio module, audio input interface and the interior interface of recording that sets up, can realize the diversified sound source input of audio amplifier, simultaneously, through earphone output, speaker and the interior interface of recording that sets up, can realize the diversified sound source output of audio amplifier to the integrated level of audio amplifier has been improved, and the function of audio amplifier has been expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. The elements or parts are not necessarily drawn to scale in all figures.
Fig. 1 is a schematic circuit block diagram of a sound card musical instrument sound box according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a bluetooth audio module according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a preamplifier according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a power amplifier according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a key panel according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a USB interface according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a charging module according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a short-wave remote control receiving module according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the sound box of the sound card instrument includes a bluetooth audio module, a preamplifier, a power amplifier and a speaker, wherein an audio output end of the bluetooth audio module is connected to the speaker through the preamplifier and the power amplifier in sequence, and the preamplifier is connected to an inner recording interface, an earphone interface and an audio input interface through signals.
Specifically, the loudspeaker box comprises a Bluetooth audio module, a power amplifier, a preamplifier and a loudspeaker. The Bluetooth audio module can receive audio playing equipment such as a mobile phone, an electric piano and an electric guitar, digital audio signals transmitted through Bluetooth are converted into analog audio signals to be transmitted to the preamplifier, and the analog audio signals are processed by the preamplifier and the power amplifier in sequence to drive the loudspeaker to emit corresponding sound signals.
Or, the audio output interface of the mobile phone, the electric guitar and the like can be connected through the set internal recording interface or the audio input interface, the analog audio signal output by the audio playing device can be input to the preamplifier through the internal recording interface, and the analog audio signal is processed by the preamplifier and the power amplifier and then drives the loudspeaker to output a corresponding sound signal, so that the diversified sound source input of the sound box is realized.
Meanwhile, the preamplifier can process the received analog audio signal and transmit the processed analog audio signal to the internal recording interface or the earphone interface, and then transmit the processed analog audio signal to the mobile phone connected with the internal recording interface or the earphone connected with the earphone interface, so that the audio signal can be recorded through the internal recording function of the mobile phone, or the audio signal can be converted into a sound signal through the earphone. The diversified sound source output of the sound box is realized.
As shown in fig. 2, 3 and 4, the bluetooth audio module comprises a bluetooth audio chip of type AC6969D, the output DACL of which is connected to the input of a preamplifier of type CPT4809, the output of which is connected to the input INN of a power amplifier of type CS5250, the connection port J9 of which can be connected to a loudspeaker. After analog audio signals output by the Bluetooth audio chip are sequentially processed by the preamplifier and the power amplifier, the loudspeaker can be driven to output corresponding sound signals.
The preamplifier is also connected with an internal recording interface JK3, an earphone interface JK2 and an audio input interface J10. The in-recording interface JK3 may be a 4-segment 3.5mm audio jack. An audio playing device such as an electric guitar can be connected through the audio input interface J10, and the preamplifier can receive an analog audio signal sent by the audio playing device through the audio input interface J10. The received analog audio signal is processed by the preamplifier and the power amplifier and then drives the loudspeaker to output a corresponding sound signal.
Meanwhile, the preamplifier can be respectively connected with the mobile phone and the earphone through the internal recording interface JK3 and the earphone interface JK 2. The preamplifier can send the processed analog audio signal to the connected mobile phone and the connected earphone through the internal recording interface JK3 and the earphone interface JK 2.
In this embodiment, optionally, the control terminals of the preamplifier and the power amplifier are respectively connected to the control signal output terminal of the bluetooth audio module.
Specifically, the control signal output terminal SD and the control signal output terminal MUTE of the bluetooth audio module may be connected to the control terminal CTRL of the power amplifier and the control terminal SD of the preamplifier, respectively. The output of the power amplifier and the output of the preamplifier can be controlled by the Bluetooth audio module to match different audio output modes. For example, if the power amplifier is controlled to be turned on by the bluetooth audio module, a sound signal can be output through the speaker, and if the power amplifier is controlled to be turned off by the bluetooth audio control module, the sound signal can be played through the earphone connected with the earphone interface, or the analog audio signal is transmitted to the mobile phone for storage.
In this embodiment, optionally, the bluetooth audio module further includes a usb flash disk interface, and the usb flash disk interface is in signal connection with the bluetooth audio module.
As shown in fig. 2 and fig. 6, the USB interface end of the bluetooth audio chip may be connected to the USB disk interface, and the bluetooth audio chip may be connected to the USB disk through the USB disk interface to expand the audio input mode of the sound box.
In this embodiment, optionally, the bluetooth audio module further includes a key panel, and the key panel is in signal connection with the bluetooth audio module. Specifically, as shown in fig. 2 and fig. 5, the signal input terminal PB1 of the bluetooth audio chip may further be connected to a key panel, and a corresponding control signal may be input through the key panel, so as to control the sound box.
In this embodiment, optionally, the charging device further includes a battery, and the battery is connected with a charging interface through the charging module. Specifically, the sound box is further provided with a battery, and power is supplied to each module of the sound box through the battery. The battery is a rechargeable battery and is connected with a USB charging interface through a charging module so as to be charged. As shown in fig. 7, in this embodiment, the charging module includes a charging control chip U11, an input end of the charging control chip is connected to the USB charging interface, and an output end of the charging control chip is connected to the battery.
In this embodiment, optionally, the bluetooth audio module further includes a short-wave remote control receiving module, where the short-wave remote control receiving module is in signal connection with the bluetooth audio module, and the short-wave remote control receiving module is shown in fig. 8.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled 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; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (6)
1. A sound card musical instrument sound box, comprising: the Bluetooth audio module comprises a Bluetooth audio module, a preamplifier, a power amplifier and a loudspeaker, wherein an audio output end of the Bluetooth audio module is connected with the loudspeaker through the preamplifier and the power amplifier in sequence, and the preamplifier is in signal connection with an internal recording interface, an earphone interface and an audio input interface.
2. The sound card instrument speaker of claim 1, wherein the control terminals of the preamplifier and the power amplifier are respectively connected to the control signal output terminal of the bluetooth audio module.
3. The sound card musical instrument speaker of claim 1, further comprising a U disk interface in signal connection with the Bluetooth audio module.
4. The sound card instrument speaker of claim 1, further comprising a key panel in signal connection with the bluetooth audio module.
5. The sound card musical instrument speaker of claim 1, further comprising a battery, the battery being connected to the charging interface via the charging module.
6. The sound card musical instrument speaker of claim 1, further comprising a short wave remote control receiving module in signal connection with the bluetooth audio module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222919293.6U CN218352713U (en) | 2022-11-01 | 2022-11-01 | Sound card musical instrument sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222919293.6U CN218352713U (en) | 2022-11-01 | 2022-11-01 | Sound card musical instrument sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218352713U true CN218352713U (en) | 2023-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222919293.6U Active CN218352713U (en) | 2022-11-01 | 2022-11-01 | Sound card musical instrument sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218352713U (en) |
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2022
- 2022-11-01 CN CN202222919293.6U patent/CN218352713U/en active Active
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