CN216982043U - Portable musical instrument audio amplifier - Google Patents
Portable musical instrument audio amplifier Download PDFInfo
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- CN216982043U CN216982043U CN202123447284.3U CN202123447284U CN216982043U CN 216982043 U CN216982043 U CN 216982043U CN 202123447284 U CN202123447284 U CN 202123447284U CN 216982043 U CN216982043 U CN 216982043U
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Abstract
The utility model discloses a portable musical instrument sound box, which comprises an audio amplifier body, wherein the audio amplifier body comprises an analog type preceding stage control circuit and a digital type rear stage amplification circuit, wherein the analog type preceding stage control circuit comprises a musical instrument input module, a gain adjustment module, a high-frequency, middle-frequency and low-frequency three-section equalizer adjustment module, an AUX/Bluetooth input level adjustment module, a total volume control module and a stereo earphone output module; the digital post-stage amplifying circuit is used for amplifying the input signal on the analog pre-stage control circuit and outputting the signal; the gain adjusting module adjusts the gain of the input level on the analog type front stage control circuit, and the gain of the input level on the analog type front stage control circuit is adjusted to match different output level settings of various musical instruments, so that the output of distorted sound after an overlarge input signal is amplified by the digital type rear stage amplifying circuit is avoided.
Description
Technical Field
The utility model relates to the technical field of musical instrument sound boxes, in particular to a portable musical instrument sound box.
Background
The portable musical instrument sound box is a device for connecting musical instruments and amplifying weak electric signals from a signal source to drive a loudspeaker to emit sound, such as a guitar, but the portable musical instrument sound box has the following problems in use due to different playing styles of different players, different musical instruments, different players and playing styles: the overload indicator lamp displays red when the sound of the small signal received by the sound box is suddenly changed or the sound is broken or the sound is played vigorously, and the best matching tone effect between the sound box and the musical instrument cannot be realized.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a portable musical instrument sound box which is used for realizing the optimal matching timbre effect between the sound box and a musical instrument.
In view of the above, the present invention provides a portable musical instrument sound box, which comprises an audio amplifier body, wherein the audio amplifier body comprises an analog type front stage control circuit and a digital type rear stage amplification circuit, wherein the analog type front stage control circuit comprises a musical instrument input module, a gain adjustment module, a high, medium and low frequency three-stage equalizer adjustment module, an AUX/bluetooth input level adjustment module, a total volume control module and a stereo headphone output module; the digital post-stage amplifying circuit is used for amplifying and outputting an input signal on the analog pre-stage control circuit; and the gain adjusting module adjusts the gain of the input level on the analog front-stage control circuit.
Furthermore, the audio amplifier body also comprises a Bluetooth input module, and the Bluetooth input module is used for connecting a mobile phone or other music players through Bluetooth.
Furthermore, be equipped with control panel on the shell of audio amplifier body, last input level adjust knob, musical instrument input port, stereo AUX input port, AUX bluetooth input selection adjust knob, overload pilot lamp, input mode pilot lamp, earphone output port, total volume adjust knob, power key, high frequency adjust knob, intermediate frequency adjust knob, low frequency adjust knob, power indicator and the supply socket of being provided with of control panel.
Further, the input level adjusting knob is electrically connected with the gain adjusting module; the musical instrument input port and the AUX input port are electrically connected with the musical instrument input module.
Further, the instrument input port is used for plugging in a guitar or other musical instrument.
Furthermore, the AUX input port is used for being connected with a mobile phone, a metronome or other music players through a plug wire.
Furthermore, the AUX/Bluetooth input selection adjusting knob is electrically connected with the AUX/Bluetooth input level adjusting module, the rotation of the AUX/Bluetooth input selection adjusting knob is used for adjusting the volume of stereo or Bluetooth input, and the pressing of the AUX/Bluetooth input selection adjusting knob is used for switching stereo or Bluetooth input modes.
Furthermore, the high-frequency adjusting knob, the medium-frequency adjusting knob and the low-frequency adjusting knob are respectively and electrically connected with the high-frequency equalizer adjusting module, the medium-frequency equalizer adjusting module and the low-frequency equalizer adjusting module and used for adjusting the tone of the musical instrument.
Further, the overload indicator lamp is red to indicate an overload state; the blue lamp of the input mode indicator lamp is normally on to be in a Bluetooth input mode; the green light of the input mode indicator light is always on for a stereo input mode.
Furthermore, the earphone output port is electrically connected with the stereo earphone output module, and the earphone output port is used for connecting an earphone; the total volume adjusting knob is electrically connected with the total volume control module, and the rotation of the total volume adjusting knob is used for adjusting the volume input by the musical instrument.
According to the technical scheme, the embodiment of the utility model has the following advantages:
the utility model discloses a portable musical instrument sound box, which comprises an audio amplifier body, wherein the audio amplifier body comprises an analog type preceding stage control circuit and a digital type rear stage amplification circuit, wherein the analog type preceding stage control circuit comprises a musical instrument input module, a gain adjustment module, a high, middle and low frequency three-stage equalizer adjustment module, an AUX/Bluetooth input level adjustment module, a total volume control module and a stereo earphone output module; the digital post-stage amplifying circuit is used for amplifying and outputting an input signal on the analog pre-stage control circuit; the gain adjusting module adjusts the gain of the input level on the analog type front stage control circuit, and the gain of the input level on the analog type front stage control circuit is adjusted to match different output level settings of various musical instruments, so that the output of distorted sound after an overlarge input signal is amplified by the digital type rear stage amplifying circuit is avoided.
In addition, the portable musical instrument sound box also has the following advantages:
(1) the volume is small and portable, and the output power is high;
(2) the high, medium and low frequency three-section equalizer is used for adjusting to help a player to adjust the true timbre of the musical instrument and the timbre output reflecting the skill of the musical instrument under different acoustic environments and places;
(3) the low-background-noise stereo earphone has an output function, can be connected with most earphones with impedance below 32 ohms for practice, forms a complete 'silent' environment and avoids disturbing other people or neighbors;
(4) the stereo input function can be accessed to a metronome or a player to play accompaniment to help practice and playing, and the player can be accessed to a sound box through stereo input to play music, so that the player can be used as a common sound box, and the effect of replaying tone quality is good;
(5) the input of the Bluetooth module can be connected with a mobile phone, and a user can play accompaniment matched with musical instrument practice and playing through the APP software of the mobile phone; and music can also be played through the connection of the Bluetooth module.
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 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 exercise.
Fig. 1 is a sectional view of a control panel of a portable musical instrument sound box according to an embodiment of the present invention;
fig. 2 is a schematic view of an overall structure of a portable musical instrument sound box according to an embodiment of the present invention.
In the figure:
1. an audio amplifier body; 2. a control panel; 3. inputting a level adjustment knob; 4. an instrument input port; 5. an AUX input port; 6. AUX/Bluetooth input selection adjusting knob; 7. an overload indicator light; 8. an input mode indicator light; 9. an earphone output port; 10. a total volume adjusting knob; 11. a power key; 12. a high-frequency adjusting knob; 13. a medium frequency adjusting knob; 14. a low frequency adjustment knob; 15. a power indicator light; 16. an electric outlet.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings. 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 invention.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a portable musical instrument sound box, and as shown in fig. 1, the portable musical instrument sound box includes an audio amplifier body 1, where the audio amplifier body 1 includes an analog front stage control circuit and a digital rear stage amplification circuit, where the analog front stage control circuit includes a musical instrument input module, a gain adjustment module, a high, middle, and low frequency three-stage equalizer adjustment module, an AUX/bluetooth input level adjustment module, a total volume control module, a stereo headphone output module, and a bluetooth input module, and the bluetooth input module is used for bluetooth connection with a mobile phone or other music players; the digital post-stage amplifying circuit is used for amplifying and outputting an input signal on the analog pre-stage control circuit; and the gain adjusting module adjusts the gain of the input level on the analog front-stage control circuit.
Wherein, gain adjustment module and input level adjust knob 3 electric connection, input level adjust knob 3 is B type linear potentiometer, and B type linear potentiometer is linear potentiometer: the conductive substances on the resistor body are uniformly distributed, the resistance values of unit lengths are approximately equal, the change of the resistance values is in a linear relation with the rotation angle of the potentiometer, and the resistor body is mainly used for voltage division; the resistance value is uniformly changed according to the rotation angle, and is suitable for adjustment in aspects of partial pressure, monotony and the like.
It can be understood that the input level adjustment knob 3 controlled by the B-type linear potentiometer can perform a wide range of high linear adjustment capability to match different types of musical instruments (e.g., electric guitar, electric bass, acoustic guitar, peculi, etc.) or different output levels of different brands of products in the same type of musical instruments, and since distorted sounds can damage the speaker unit of the speaker and cause poor performance, the gain of the input level on the analog pre-stage control circuit is adjusted to prevent an excessive input signal from outputting the distorted sounds after being amplified by the digital post-stage amplification circuit.
Further, as shown in fig. 1, a control panel 2 is disposed on the audio amplifier body 1, and various hardware devices electrically connected to the modules in the audio amplifier body 1 are disposed on the control panel 2, including: the system comprises a musical instrument input port 4, a stereo AUX input port 5, an AUX/Bluetooth input selection adjusting knob 6, an overload indicator light 7, an input mode indicator light 8, an earphone output port 9, a total volume adjusting knob 10, a power key 11, a high-frequency adjusting knob 12, a medium-frequency adjusting knob 13, a low-frequency adjusting knob 14, a power indicator light 15 and a power socket 16.
It can be understood that, through the design of the audio amplifier body 1, the power amplifier circuit of the portable musical instrument sound box and the control panel 2 have high integration level, the size is 4 inches, the volume is small, the weight is light, the portable musical instrument sound box is small and light, the portable musical instrument sound box can be carried by a backpack, the size is small, but the portable musical instrument sound box has high sensitivity and high tolerance power, and the output power is high and can reach 35W; meanwhile, the passive radiator is used for bass compensation and phase correction, so that the size of the sound box body is small, but the low frequency is good.
The input level adjusting knob 3 is electrically connected with the gain adjusting module; the musical instrument input port 4 and the AUX input port 5 are electrically connected with the musical instrument input module; the instrument input port 4 is used for plugging in a guitar or other musical instrument; the AUX input port 5 is used for connecting a mobile phone, a metronome or other music players by plugging. The instrument signal is received from either the active or passive instrument through a standard 6.35 plug signal line via a wired connection to allow 3.5mm stereo input. Other musical instruments include keyboards, acoustic guitars, electric bass, ukulele, violins, etc.
Can be used for
Furthermore, the AUX/bluetooth input selection adjusting knob 6 is electrically connected to the AUX/bluetooth input level adjusting module, rotation of the AUX/bluetooth input selection adjusting knob 6 is used for adjusting volume of stereo or bluetooth input, and pressing of the AUX/bluetooth input selection adjusting knob 6 is used for switching stereo or bluetooth input modes.
Specifically, the Bluetooth module is arranged and can be used as a Bluetooth sound box, the multifunctional power amplifier belongs to a multifunctional power amplifier product, a power amplifier and a Bluetooth sound box are integrated, a Bluetooth input is easily connected with a mobile phone and used for a metronome, the Bluetooth sound box is used as a Bluetooth sound box during accompaniment, and a user can play the accompaniment through APP software of the mobile phone to cooperate with musical instrument practice and playing; the Bluetooth module can be connected to play music, and the Bluetooth module can provide a music playback effect comparable to CD-level tone quality by the aid of the self-contained aptX HD Bluetooth decoding. Among them, "aptX HD" is a new generation of coding compression scheme introduced by the general companies, which can protect audio data when audio transmission is performed using bluetooth, thereby providing higher definition sound quality.
Further, the high frequency adjusting knob 12, the medium frequency adjusting knob 13 and the low frequency adjusting knob 14 are electrically connected to the high, medium and low frequency equalizer adjusting modules respectively, and are used for adjusting the tone of the musical instrument.
Specifically, the high frequency is adjusted and boosted or attenuated by the high frequency adjusting module to adjust the tone, and the intermediate frequency is boosted or attenuated by the intermediate frequency adjusting module to adjust the tone; and boosting or attenuating the high frequency by a low frequency adjusting module to adjust the tone color.
In actual operation, the high, middle and low 3-stage knobs of the control panel 2 are used for adjusting the sound effect, so that the player can be helped to adjust the natural tone of the musical instrument and output tone which embodies the skill of the player under different acoustic environments and places. The multi-tone selection is realized, and the multi-tone selection can meet the player with various tone preferences
Further, the overload indicator light 7 is red to indicate an overload state; for example, when a player is playing vigorously, the overload indicator light 7 displays red, so that the best matching between the sound box and the musical instrument can be optimized, the sound box can realize the best timbre effect, and the problems of audio signal loss caused by small signal sound break, large and small sound and circuit starting delay are solved.
The blue lamp of the input mode indicator lamp 8 is normally on to be in a Bluetooth input mode; the green light of the input mode indicator light 8 is always on for stereo input mode.
It is worth noting that after the Bluetooth input is selected, the blue lamp twinkles under the initial pairing state, and the blue lamp turns to be long-bright after the pairing is successful.
Further, the earphone output port 9 is electrically connected to the stereo earphone output module, and the earphone output port 9 is used for connecting an earphone; the total volume adjusting knob 10 is electrically connected with the total volume control module, and the rotation of the total volume adjusting knob 10 is used for adjusting the volume input by the musical instrument.
Specifically, the earphone output port 9 is used for connecting an earphone, has a low-noise-floor stereo earphone output function, can be connected with most earphones with impedance below 32 ohms to form a complete 'silent' environment, and when the earphone is connected, a loudspeaker of the earphone can not output sound any more, and the earphone is used during exercise to avoid disturbing others.
The rotation of the total volume adjusting knob 10 adjusts the volume level of the musical instrument input.
In addition, the portable musical instrument sound box body 1 is also provided with a power indicator 15 and a power socket 16 on the shell, the power of the portable musical instrument sound box is turned on or off through the power key 11, and after the power is turned on, the power indicator is always on green. When the portable musical instrument sound box is not used for a long time, the power supply is turned off, and after the power supply is turned off, the power amplifier power supply is turned off, but the power supply is not completely cut off, and if the power supply of the portable musical instrument sound box is required to be completely turned off, the power line plug can be pulled out from the socket. In addition, the portable musical instrument sound box is small in size, small and portable, is a minimum loudspeaker unit and a minimum bass sound box, can be placed on a desktop, is also a household Bluetooth sound box, and is wide in application range.
In summary, the portable musical instrument sound box of the embodiment includes an audio amplifier body, the audio amplifier body includes an analog front stage control circuit and a digital rear stage amplification circuit, wherein the analog front stage control circuit includes a musical instrument input module, a gain adjustment module, a high, middle and low frequency three-stage equalizer adjustment module, an AUX/bluetooth input level adjustment module, a total volume control module and a stereo headphone output module; the digital post-stage amplifying circuit is used for amplifying and outputting an input signal on the analog pre-stage control circuit; the gain adjusting module adjusts the gain of the input level on the analog type front stage control circuit, and the gain of the input level on the analog type front stage control circuit is adjusted to match different output level settings of various musical instruments, so that the output of distorted sound after an overlarge input signal is amplified by the digital type rear stage amplifying circuit is avoided.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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 technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A portable musical instrument sound box is characterized by comprising an audio amplifier body (1), wherein the audio amplifier body (1) comprises an analog type preceding stage control circuit and a digital type subsequent stage amplifying circuit, wherein the analog type preceding stage control circuit comprises a musical instrument input module, a gain adjusting module, a high-frequency, medium-frequency and low-frequency three-stage equalizer adjusting module, an AUX/Bluetooth input level adjusting module, a total volume control module and a stereo earphone output module; the digital post-stage amplifying circuit is used for amplifying and outputting an input signal on the analog pre-stage control circuit; and the gain adjusting module adjusts the gain of the input level on the analog front-stage control circuit.
2. The portable musical instrument sound box according to claim 1, characterized in that the audio amplifier body (1) further comprises a bluetooth input module therein, and the bluetooth input module is used for bluetooth connection with a mobile phone or other music players.
3. The portable musical instrument sound box according to claim 2, wherein a control panel (2) is provided on the housing of the audio amplifier body (1), and an input level adjusting knob (3), a musical instrument input port (4), an AUX input port (5), an AUX/bluetooth input selection adjusting knob (6), an overload indicator (7), an input mode indicator (8), an earphone output port (9), a total volume adjusting knob (10), a power key (11), a high frequency adjusting knob (12), a medium frequency adjusting knob (13), a low frequency adjusting knob (14), a power indicator (15), and a power socket (16) are provided on the control panel (2).
4. The portable musical instrument speaker as set forth in claim 3, wherein the input level adjusting knob (3) and the gain adjusting module are electrically connected; the musical instrument input port (4) and the AUX input port (5) are electrically connected with the musical instrument input module.
5. Portable musical instrument enclosure according to claim 4, characterized in that the instrument input port (4) is for plug wire connection to a guitar or other musical instrument.
6. The portable musical instrument speaker as claimed in claim 4, wherein the AUX input port (5) is used for plug-in connection with a mobile phone, metronome or other music player.
7. The portable musical instrument speaker of claim 3, wherein the AUX/Bluetooth input selection adjustment knob (6) is electrically connected to the AUX/Bluetooth input level adjustment module, rotation of the AUX/Bluetooth input selection adjustment knob (6) is used to adjust the volume of stereo or Bluetooth input, and depression of the AUX/Bluetooth input selection adjustment knob (6) is used to switch stereo or Bluetooth input modes.
8. The portable musical instrument sound box according to claim 3, wherein the high frequency adjusting knob (12), the middle frequency adjusting knob (13) and the low frequency adjusting knob (14) are electrically connected with the high, middle and low frequency three-stage equalizer adjusting module respectively, and are used for adjusting the tone of the musical instrument.
9. A portable musical instrument speaker as claimed in claim 3, wherein the overload indicator (7) lights up a red light to indicate an overload state; the blue lamp of the input mode indicator lamp (8) is normally on and is in a Bluetooth input mode; the green light of the input mode indicator light (8) is always on as a stereo input mode.
10. The portable musical instrument speaker as claimed in claim 3, wherein the earphone output port (9) is electrically connected to the stereo earphone output module, the earphone output port (9) being for connecting an earphone; the total volume adjusting knob (10) is electrically connected with the total volume control module, and the rotation of the total volume adjusting knob (10) is used for adjusting the volume input by the musical instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123447284.3U CN216982043U (en) | 2021-12-30 | 2021-12-30 | Portable musical instrument audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123447284.3U CN216982043U (en) | 2021-12-30 | 2021-12-30 | Portable musical instrument audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216982043U true CN216982043U (en) | 2022-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123447284.3U Active CN216982043U (en) | 2021-12-30 | 2021-12-30 | Portable musical instrument audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216982043U (en) |
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2021
- 2021-12-30 CN CN202123447284.3U patent/CN216982043U/en active Active
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