CN217741835U - Volume adjusting circuit and sound box equipment - Google Patents
Volume adjusting circuit and sound box equipment Download PDFInfo
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- CN217741835U CN217741835U CN202121745092.8U CN202121745092U CN217741835U CN 217741835 U CN217741835 U CN 217741835U CN 202121745092 U CN202121745092 U CN 202121745092U CN 217741835 U CN217741835 U CN 217741835U
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Abstract
The utility model provides a volume control circuit and audio amplifier equipment, this volume control circuit includes: a main control chip; the first end of the audio gain control module is connected with the first end of the main control chip; the first end of the audio power amplifier adjusting module is connected with the second end of the main control chip, and the second end of the audio power amplifier adjusting module is connected with the second end of the audio gain control module; and the loudspeaker is connected with the third end of the audio power amplifier adjusting module. Like this, because accessible audio gain control module adjusts the audio gain scope, adjusts the power amplifier power through audio power amplifier adjusting module to can adapt to the regulation to the volume range of audio frequency according to the user demand under the different scenes, volume control's flexibility is stronger.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to a volume control circuit and audio amplifier equipment.
Background
At present, sound box devices are more and more widely used, for example, the sound box devices can be used for playing in families, and can also be used for playing in scenes such as squares, report halls and the like. In the prior art, the sound box device usually has only one fixed volume adjustment range, and a user can adjust the volume of the sound box device up or down as required, however, in some scenes, such as a square, even if the user adjusts the volume of the sound box device up to the maximum, the volume requirement in the scene cannot be met. Therefore, the volume adjusting effect of the existing sound box equipment is poor.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a volume control circuit and audio amplifier equipment to solve the relatively poor problem of volume control effect of current audio amplifier equipment.
In order to solve the technical problem, the utility model discloses a realize like this:
in a first aspect, an embodiment of the present invention provides a volume adjustment circuit, including:
a main control chip;
the first end of the audio gain control module is connected with the first end of the main control chip;
the first end of the audio power amplifier adjusting module is connected with the second end of the main control chip, and the second end of the audio power amplifier adjusting module is connected with the second end of the audio gain control module; and
and the loudspeaker is connected with the third end of the audio power amplifier adjusting module.
Optionally, the audio gain control module includes N audio gain units, each audio gain unit is electrically connected to the second end of the audio power amplifier adjustment module, and N is an integer greater than 1;
wherein, the gain range corresponding to each audio gain unit is different.
Optionally, the audio gain control module further includes a first switch unit, a first end of the first switch unit is connected to the second end of the audio power amplifier adjustment module, the first switch unit is connected to the N audio gain units, and a signal control end of the first switch unit is connected to the first end of the main control chip.
Optionally, the audio power amplifier adjusting module includes an audio power amplifier unit and M power amplifier power supplies, each power amplifier power supply is connected to the first end of the audio power amplifier unit, the second end of the audio power amplifier unit is connected to the second end of the audio gain control module, the third end of the audio power amplifier unit is connected to the speaker, and M is an integer greater than 1;
and the power of the power supply provided by each power amplifier power supply is large or small.
Optionally, the audio power amplifier adjusting module further includes a second switch unit, a first end of the second switch unit is connected with a first end of the audio power amplifier unit, the second switch unit is connected with the M power amplifier power supplies, and a signal control end of the second switch unit is connected with a second end of the main control chip.
Optionally, the volume adjusting circuit further includes a command obtaining module, and the command obtaining module is connected to the third end of the main control chip.
Optionally, the command acquiring module includes at least one of a voice control unit, a key control unit, and a pattern recognition unit.
In a second aspect, an embodiment of the present invention provides a speaker device, including the volume adjusting circuit according to the first aspect.
The embodiment of the utility model provides an in, volume control circuit includes: a main control chip; the first end of the audio gain control module is connected with the first end of the main control chip; the first end of the audio power amplifier adjusting module is connected with the second end of the main control chip, and the second end of the audio power amplifier adjusting module is connected with the second end of the audio gain control module; and the loudspeaker is connected with the third end of the audio power amplifier adjusting module. Like this, because accessible audio gain control module adjusts the audio gain scope, adjusts the power amplifier power through audio power amplifier adjusting module to can adapt to the regulation to the volume range of audio frequency according to the user demand under the different scenes, volume control's flexibility is stronger.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a block diagram of a volume adjusting circuit according to an embodiment of the present invention;
fig. 2 is a block diagram of another volume adjusting circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a volume adjusting circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
As the application of speaker devices becomes more and more widespread, different maximum volumes are required in different application scenarios. For example, in a home application scenario, the maximum volume is not suitable for being made too large, and in a scenario such as a square, a report hall, etc., a relatively large maximum volume is required. Therefore, a sound box device with a function of dynamically adjusting the maximum volume needs to be designed to meet the requirements of different application scenarios.
Referring to fig. 1, fig. 1 is a block diagram of a volume adjusting circuit according to an embodiment of the present invention, and as shown in fig. 1, the volume adjusting circuit 10 includes:
a main control chip 11;
the first end of the audio gain control module 12 is connected with the first end of the main control chip 11;
the first end of the audio power amplifier adjusting module 13 is connected with the second end of the main control chip 11, and the second end of the audio power amplifier adjusting module 13 is connected with the second end of the audio gain control module 12; and
the loudspeaker 14, the loudspeaker 14 is connected with the third end of the audio power amplifier regulating module 13;
the main control chip 11 is used for controlling the audio gain control module 12 to adjust the audio gain range, and controlling the audio power amplifier adjusting module 13 to adjust the power amplifier power supply.
As shown in fig. 1, in the embodiment of the present invention, volume adjusting circuit 10 includes main control chip 11, audio gain control module 12, audio power amplifier adjusting module 13 and speaker 14, wherein, main control chip 11 is the core control module of volume adjusting circuit 10, a working state for each other module in the control circuit, control audio playing, etc., audio gain control module 12 is mainly used for controlling audio gain, that is, audio gain is adjustable and controllable, thereby make the volume range of audio adjustable, audio power amplifier adjusting module 13 is mainly used for adjusting the power amplifier power supply of audio, make power amplifier power supply and current audio gain adaptation, for example, under the great condition of the audio gain of current selection, the great power source of corresponding selection carries out the power supply support to audio power amplifier, the speaker is then used for playing the audio, output sound signal.
That is to say, the audio gain control module 12 and the audio power amplifier adjusting module 13 can be controlled by the main control chip 11, the main control chip 11 can issue control signals to the audio gain control module 12 and the audio power amplifier adjusting module 13 according to the use requirements on the volume under different scenes and according to the user command or the self-identified playing scene, and control the audio gain control module 12 and the audio power amplifier adjusting module 13 to adjust the appropriate audio gain and select the matched power amplifier power supply, so that the speaker 14 outputs the audio with the corresponding volume.
It should be noted that, the adjustable volume range of the audio means that the audio can be adjusted and switched between different volume intervals, that is, the minimum volume and the maximum volume are adjustable, so that different requirements for the maximum volume in different scenes can be met.
Optionally, as shown in fig. 3, the audio gain control module 12 includes N audio gain units 121. Each audio gain unit 121 is electrically connected to the second end of the audio power amplifier adjusting module 13, and N is an integer greater than 1;
wherein, the gain range corresponding to each audio gain unit 121 is different.
In one embodiment, as shown in fig. 3, the audio gain control module 12 may include a plurality of audio gain units 121, and each audio gain unit 121 is configured with a different gain range for adjusting the audio volume in a different range. For example, in some embodiments, N equals 3, and audio gain control module 12 includes 3 audio gain units 121, a first audio gain unit, a second audio gain unit, and a third audio gain unit, respectively. The gain range of the first audio gain unit is 0-1, the gain range of the second audio gain unit is 1-2, namely, the audio signal can be amplified by two times at most, and the gain range of the third audio gain unit is 2-3, namely, the audio signal can be amplified by three times at most.
Each audio gain unit 121 may be connected to the second end of the audio power amplifier adjusting module 13, and in some embodiments, each audio gain unit 121 may be electrically connected to the second end of the audio power amplifier adjusting module 13 through a switch unit. Specifically, each audio gain unit 121 may be controlled by the main control chip 11, and under the control of the main control chip 11, one audio gain unit may be allowed to be connected to the audio power amplifier adjustment module 13 at a time, so that an audio signal is amplified by the audio gain unit and then enters the audio power amplifier adjustment module 13, or the main control chip 11 may control an audio input signal to be input to one of the N audio gain units at a time, and then enter the audio power amplifier adjustment module 13 after being processed.
Therefore, by configuring a plurality of different audio gain units and selecting one of the different audio gain units to process the audio signal according to the requirement when in use, the aim of adjusting the maximum audio volume can be easily achieved, and the circuit structure is simple and reliable.
Optionally, as shown in fig. 3, the audio gain control module 12 further includes a first switch unit 122, and a first end of the first switch unit 122 is connected to a second end of the audio power amplifier adjusting module 13. The first switching unit 122 is connected to the N audio gain units 121. For example, N ports of the first switching unit 122 are connected to the N audio gain units 121 in a one-to-one correspondence. A signal control terminal of the first switch unit 122 is connected to a first terminal of the main control chip 11.
The first switch unit 122 connects the audio power amplifier adjusting module 13 to one of the N audio gain units 121 under the control of the main control chip 11.
In an embodiment, an audio signal may be processed by selecting one audio gain unit from the N audio gain units 121 through a switch unit, as shown in fig. 3, the switch unit includes a first switch unit 122, the N audio gain units 121 are connected to the audio power amplifier adjustment module 13 through the first switch unit 122, a first end of the first switch unit 122 is connected to a second end of the audio power amplifier adjustment module 13, and the other N ports of the first switch unit 122 are connected to the N audio gain units 121 in a one-to-one correspondence manner, that is, each port of the first switch unit 122 is connected to one audio gain unit, so that the first end of the first switch unit 122 and the other N ports form N paths, and the first switch unit 122 may be connected to one of the paths in a gating or signal control manner, so that one of the N audio gain units 121 enters an operating state, and an audio input signal is processed and then sent to the audio power amplifier adjustment module 13.
The first switch unit 122 further includes a signal control end, the signal control end is connected to the first end of the main control chip 11, and the main control chip 11 can send a control signal to the first switch unit 122 through the signal control end to control the first switch unit 122 to gate one of the N audio gain units 121. The first switch unit 122 may be a gating switch, such as a single-pole multi-throw switch, and may be switched to a corresponding path by controlling a connection between a fixed end and a movable end of the switch, so as to gate a certain path of the audio gain unit, or the first switch unit 122 may also be a switch circuit, such as a triode switch circuit, and may control a connection of a certain path and a disconnection of other paths by a high-low level, so as to select a certain path of the audio gain unit.
In this way, by adding the switch unit to the audio gain control module 12, the selection and adjustment of the audio gain unit can be conveniently and flexibly implemented, and the implementation cost is low.
Optionally, as shown in fig. 3, the audio power amplifier adjusting module 13 includes an audio power amplifier unit 131 and M power amplifier power supplies 132, each power amplifier power supply 132 is electrically connected to a first end of the audio power amplifier unit 131, a second end of the audio power amplifier unit 131 is connected to a second end of the audio gain control module 12, a third end of the audio power amplifier unit 131 is connected to the speaker 14, and M is an integer greater than 1;
wherein, the power of the power supply provided by each power amplifier 132 is different, and the main control chip 11 controls one of the N power amplifiers 132 to supply power to the audio power amplifier unit 131.
In an embodiment, as shown in fig. 3, the audio power amplifier adjusting module 13 may include an audio power amplifier unit 131 and a plurality of power amplifiers 132, each power amplifier 132 provides a power supply with different power, the number and the power supply range of the power amplifiers may be specifically determined based on the gain range of the audio gain control module 12, that is, each power amplifier may be adapted to an audio gain range, the larger the audio gain is, the larger the power of the corresponding power amplifier is, for example, the number of the power amplifiers may be consistent with the number of the audio gain units, each power amplifier may be adapted to an audio gain unit, and when a certain audio gain unit is selected to amplify an audio signal, the adapted power amplifier may be selected to supply power to the audio power amplifier unit accordingly.
Each power amplifier power supply 132 may be connected to the first end of the audio power amplifier unit 131, and in some embodiments, each power amplifier power supply 132 may be electrically connected to the first end of the audio power amplifier unit 131 through a switch unit. The second end of the audio power amplifier unit 131 is connected to the second end of the audio gain control module 12, and when the audio gain control module 12 includes the first switch unit 122, the second end of the audio power amplifier unit 131 may be connected to the first end of the first switch unit 122, and the third end of the audio power amplifier unit 131 is connected to the speaker 14. Specifically, each power amplifier 132 may be controlled by the main control chip 11, and under the control of the main control chip 11, one power amplifier may be allowed to be connected to the audio power amplifier unit 131 at a time, so that the power amplifier supplies power to the audio power amplifier unit 131.
Therefore, by configuring a plurality of different power amplifier power supplies, support can be provided for switching of audio gain, the purpose of adjusting the maximum audio volume is achieved, and the circuit structure is simple and reliable.
Optionally, as shown in fig. 3, the audio power amplifier adjusting module 13 further includes a second switch unit 133, a first end of the second switch unit 133 is connected to a first end of the audio power amplifier unit 131, and the second switch unit 133 is connected to the M power amplifier power supplies 132, for example, M ports of the second switch unit 133 are connected to the M power amplifier power supplies 132 in a one-to-one correspondence manner, and a signal control end of the second switch unit 133 is connected to a second end of the main control chip 11;
the second switch unit 133 connects the audio power amplifier unit 131 to one of the N power amplifier power supplies 132 under the control of the main control chip 11.
In an embodiment, a power amplifier power supply may be selected from the M power amplifier power supplies 132 through a switch unit to supply power to the audio power amplifier unit 131, as shown in fig. 3, the M power amplifier power supplies 132 are connected to the audio power amplifier unit 131 through a second switch unit 133, wherein a first end of the second switch unit 133 is connected to a first end of the audio power amplifier unit 131, and other M ports of the second switch unit 133 are connected to the M power amplifier power supplies 132 in a one-to-one correspondence manner, that is, each port of the second switch unit 133 is connected to one power amplifier power supply, so that the first end of the second switch unit 133 and the other M ports form M paths, and the second switch unit 133 may be connected to one of the paths in a gating or signal control manner, so that one of the M power amplifier power supplies 132 enters an operating state to supply power to the audio power amplifier unit 131, and the power supply requirement under the current audio gain is satisfied.
The second switch unit 133 further includes a signal control end, the signal control end is connected to the second end of the main control chip 11, and the main control chip 11 can send a control signal to the second switch unit 133 through the signal control end to control the second switch unit 133 to gate one of the M power amplifier power supplies 132. The second switch unit 133 may be a gating switch, such as a single-pole multi-throw switch, and may be connected to a certain moving end through a fixed end of the control switch to a corresponding path to gate a certain path of power amplifier, or may be a switch circuit, such as a triode switch circuit, and may control the conduction of a certain path through a high-low level and the disconnection of other paths to select a certain path of power amplifier.
Therefore, the switch unit is added in the audio power amplifier adjusting module 13, so that the selection and adjustment of the power amplifier power supply can be conveniently and flexibly realized, and the realization cost is low.
Optionally, as shown in fig. 2, the volume adjusting circuit 10 further includes a command obtaining module 15, and the command obtaining module 15 is connected to the third end of the main control chip 11.
In an embodiment, the volume adjusting circuit 10 may further include a command obtaining module 15, as shown in fig. 2, the command obtaining module 15 is connected to the third end of the main control chip 11, the command obtaining module 15 may be configured to receive and identify a control command input from the outside, for example, identify a voice command, a key command, and the like, and also may be configured to identify a scene to determine a matched control command, the command obtaining module 15 sends the identified command to the main control chip 11, and the main control chip 11 responds according to the identified command and issues a corresponding control command to the audio gain control module 12 and the audio power amplifier adjusting module 13 to control the audio gain control module 12 to adjust to a corresponding audio gain, and control the audio power amplifier adjusting module 13 to select a corresponding power amplifier.
Therefore, the user can issue a corresponding control command through the command acquisition module 15, and flexible configuration of the audio gain is realized.
Of course, the volume adjusting circuit 10 may not switch the audio gain based on an externally input command, and may determine the volume required by the currently played scene by actively identifying the currently played scene, for example, identifying the playing environment through a camera, or identifying the voltage of an externally input power supply, so as to control the gain range of the audio gain control module 12.
Optionally, the command acquiring module 15 includes at least one of a voice control unit, a key control unit, and a pattern recognition unit.
In one embodiment, the command acquiring module 15 may include at least one of a voice control unit, a key control unit, and a pattern recognition unit, and to meet the requirement of a user for flexibly switching a volume range, the command acquiring module 15 may include the voice control unit, the key control unit, and the pattern recognition unit, wherein the voice control unit may support the user to input a voice command to control switching of an audio gain and adjust a maximum volume; the key control unit can support a user to switch audio gain in a physical key mode, wherein different keys correspond to different volume ranges, or different operations or different operation times on the keys correspond to different volume ranges; the mode identification unit may support the system to automatically identify the application scene, and adaptively switch the audio gain according to the application scene, for example, the mode identification unit may be an external power supply detection unit or an image identification unit, and identify the current environment by identifying the voltage of an external input power supply or by acquiring an image of the current environment to determine the current application scene, and further select the audio gain matched with the current application scene.
In this way, the user can switch the audio gain in a variety of different ways, or the audio gain switch can be accomplished autonomously without user action.
The circuit operation principle of the embodiment of the present invention is illustrated below with reference to fig. 3:
as shown in fig. 3, the first switch unit 122, i.e., the audio gain gating switch, may gate one of the audio gain units 121 under a first switch control signal, so that the audio input signal is gain-amplified by the audio gain unit to obtain an audio signal in a corresponding volume range, the second switch unit 133, i.e., the power amplifier power gating switch, may gate one of the power amplifiers 132 under a second switch control signal, so that the power amplifier power supplies power to the audio power amplifier unit 131, the audio input signal processed by the audio gain unit 121 enters the audio power amplifier unit 131 for amplification, and is finally played and output through the speaker 14.
The embodiment of the utility model provides an in, volume control circuit includes: a main control chip; the first end of the audio gain control module is connected with the first end of the main control chip; the first end of the audio power amplifier adjusting module is connected with the second end of the main control chip, and the second end of the audio power amplifier adjusting module is connected with the second end of the audio gain control module; and the loudspeaker is connected with the third end of the audio power amplifier adjusting module. Therefore, the audio gain range can be adjusted through the audio gain control module, and the power amplifier power supply can be adjusted through the audio power amplifier adjusting module, so that the audio volume range can be adaptively adjusted according to the use requirements in different scenes, and the flexibility of volume adjustment is stronger.
The embodiment of the utility model provides a still provide a sound box equipment, including the volume control circuit in the embodiment that fig. 1 or fig. 2 show.
The embodiment of the present invention of the sound box device can refer to the related descriptions in the embodiment shown in fig. 1 or fig. 2, and can obtain the same technical effect as the embodiment of the volume adjusting circuit shown in fig. 1 or fig. 2, and for avoiding repetition, it is not repeated here.
In the embodiment of the utility model provides an in, above-mentioned audio amplifier equipment can be any equipment that has audio playback function, for example: intelligent audio amplifier, outdoor stereo set, meeting room stereo set etc. equipment.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.
Claims (4)
1. A volume adjustment circuit, comprising:
a main control chip;
the first end of the audio gain control module is connected with the first end of the main control chip;
the first end of the audio power amplifier adjusting module is connected with the second end of the main control chip, and the second end of the audio power amplifier adjusting module is connected with the second end of the audio gain control module; and
the loudspeaker is connected with the third end of the audio power amplifier adjusting module;
the audio gain control module comprises N audio gain units, each audio gain unit is electrically connected with the second end of the audio power amplifier adjusting module, and N is an integer greater than 1;
wherein, the gain range corresponding to each audio gain unit is different;
the audio gain control module further comprises a first switch unit, a first end of the first switch unit is connected with a second end of the audio power amplifier adjusting module, the first switch unit is connected with the N audio gain units, and a signal control end of the first switch unit is connected with a first end of the main control chip;
the audio power amplifier adjusting module comprises an audio power amplifier unit and M power amplifier power supplies, each power amplifier power supply is connected with the first end of the audio power amplifier unit, the second end of the audio power amplifier unit is connected with the second end of the audio gain control module, the third end of the audio power amplifier unit is connected with the loudspeaker, and M is an integer greater than 1;
wherein, the power of the power supply provided by each power amplifier power supply is different;
the audio power amplifier adjusting module further comprises a second switch unit, a first end of the second switch unit is connected with a first end of the audio power amplifier unit, the second switch unit is connected with the M power amplifier power supplies, and a signal control end of the second switch unit is connected with a second end of the main control chip.
2. The volume adjusting circuit of claim 1, further comprising a command obtaining module, wherein the command obtaining module is connected to a third terminal of the main control chip.
3. The volume adjustment circuit of claim 2, wherein the command acquisition module comprises at least one of a voice control unit, a key control unit, and a pattern recognition unit.
4. A sound box apparatus comprising the volume adjusting circuit according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121745092.8U CN217741835U (en) | 2021-07-29 | 2021-07-29 | Volume adjusting circuit and sound box equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121745092.8U CN217741835U (en) | 2021-07-29 | 2021-07-29 | Volume adjusting circuit and sound box equipment |
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| CN217741835U true CN217741835U (en) | 2022-11-04 |
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| CN202121745092.8U Active CN217741835U (en) | 2021-07-29 | 2021-07-29 | Volume adjusting circuit and sound box equipment |
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| CN (1) | CN217741835U (en) |
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2021
- 2021-07-29 CN CN202121745092.8U patent/CN217741835U/en active Active
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