CN210899500U

CN210899500U - Mobile sound box with wireless listen-back function

Info

Publication number: CN210899500U
Application number: CN201921713423.2U
Authority: CN
Inventors: 黄立水
Original assignee: Guangzhou Lianhao Electronic Co ltd
Current assignee: Guangzhou Lianhao Electronic Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-06-30
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses a take wireless mobile sound who returns to listen, the utility model provides a take wireless mobile sound who returns to listen passes through the host computer end, constitutes from the machine end and wireless microphone, the host computer end includes MP3 decoding module, wireless microphone receiving module, audio processing module, power amplification module, wireless transmitting module and first power module, include wireless receiving module, amplifier module, earphone and second power module from the machine end. By using the mobile sound with wireless back listening, the influence of environmental interference factors can be reduced when a user judges the singing effect, so that the sound effect played by the sound can be clearly obtained, and the use experience of the user is greatly improved; meanwhile, the manufacturing cost of the mobile sound with wireless return listening is reduced as much as possible, and the whole mobile sound system can be accommodated in the sound box, so that the mobile sound system is very convenient to carry and transport. The utility model discloses but wide application in mobile sound equipment technical field.

Description

Mobile sound box with wireless listen-back function

Technical Field

The utility model belongs to the technical field of mobile sound equipment technique and specifically relates to a take wireless mobile sound who returns to listen.

Background

Along with the gradual development of social economy, the mode of people's life amusement is also more and more diversified, and the mobile sound is widely welcomed by the masses as an audio-visual amusement device because of the advantages of easy carrying, convenient use, low price and the like. At present, most of mobile sound equipment is applied to scenes such as national K sings, outdoor singing activities, square singing and dance performances and the like.

In current mobile sound equipment, often the user is a little far away from the distance of stereo set, and external environmental factor is more complicated, and the user is single through listening singing sound, the song rhythm that the stereo set propagated and come, very difficult to make clear and definite judgement and reasonable reaction, and the result often can cause the rhythm of singing or dance to be not corresponding with actual stereo set broadcast rhythm, and can't reach best result of use, greatly reduced user's use experience. On the other hand, although the ear return is arranged in the prior professional art sound for the artists, the art sound is often a huge and complex integral system, the arrangement comprises the cooperative collocation of a plurality of sounds, the installation and debugging of a power line and an interface line are very complex, and the construction and the disassembly need to spend a large amount of manpower, material resources and time. And the cost of the ear return is extremely high, and the ear return is not suitable for the requirements of general users. As mentioned above, the existing outdoor mobile audio equipment still has many inconveniences, and the user experience is poor, and these problems need to be solved.

SUMMERY OF THE UTILITY MODEL

To at least partially solve the above technical problem, an embodiment of the present invention is directed to: the utility model provides a take wireless mobile sound who returns to listen, can effectively reduce the user and use the interference that environmental factor brought in the stereo set process, improved user's use and experienced, reduced sound system's cost as far as simultaneously, promoted the price/performance ratio.

The embodiment of the utility model provides an adopted technical scheme is:

a mobile sound with wireless return listening comprises a host end, a slave end and a wireless microphone;

the main machine end comprises an MP3 decoding module, a wireless microphone receiving module, a sound effect processing module, a power amplification module, a wireless transmitting module and a first power supply module, wherein the MP3 decoding module and the wireless microphone receiving module are connected to the sound effect processing module, the sound effect processing module is connected to the power amplification module and the wireless transmitting module, and the first power supply module provides power for the MP3 decoding module, the wireless microphone receiving module, the sound effect processing module, the wireless transmitting module and the power amplification module;

the slave terminal comprises a wireless receiving module, an amplifier module, an earphone and a second power supply module, wherein the wireless receiving module is connected to the amplifier module, the amplifier module is connected to the earphone, and the second power supply module provides power for the wireless receiving module, the amplifier module and the earphone.

Further, the wireless microphone is provided with a VHF wireless audio signal transmitting device which can be used for transmitting VHF wireless audio signals; the wireless microphone receiving module is provided with a VHF wireless audio signal receiving device which can be used for receiving the VHF wireless audio signal, and the VHF wireless audio signal receiving device is connected to the sound effect processing module.

Further, the sound effect processing module comprises a karaoke effect processing circuit and a preceding stage sound effect processing circuit; the VHF wireless audio signal receiving device is connected with the karaoke effect processing circuit, and the MP3 decoding module is connected with the karaoke effect processing circuit.

Furthermore, the preceding stage sound effect processing circuit is connected to the wireless transmitting module; the wireless transmitting module is provided with a UHF wireless audio signal transmitting device.

Furthermore, the preceding stage sound effect processing circuit is also connected to the power amplification module.

Further, the MP3 decoding module includes an MCU processing chip, and the karaoke effect processing circuit includes a DSP processing chip, a fifth resistor, a sixth resistor, a forty-second capacitor, a thirty-third capacitor, a fourth capacitor, a fifth capacitor, a third resistor, a fifty-second capacitor, a fourth resistor, a fifty-third capacitor, a thirty-seventh capacitor, a forty-fourth capacitor, a twenty-first capacitor, a ninth resistor, an eighth capacitor, a twenty-third capacitor, a twenty-fourth capacitor, and a twenty-seventh capacitor;

a twentieth pin of the MCU processing chip is connected with an eleventh pin of the DSP processing chip through an SDA signal line in series with a fifth resistor, a twenty-fifth pin of the MCU processing chip is connected with a twelfth pin of the DSP processing chip through an SCL signal line in series with a sixth resistor, a fourth pin of the DSP processing chip is grounded through a parallel circuit formed by a fourth twelfth capacitor and a thirty-third capacitor, the fourth pin of the DSP processing chip is further connected with one end of a fourth capacitor through a parallel circuit formed by the fourth twelfth capacitor and the thirty-third capacitor, the other end of the fourth capacitor is connected with a thirty-seventh pin of the DSP processing chip, the fourth pin of the DSP processing chip is further connected with one end of a fifth capacitor through a parallel circuit formed by the fourth twelfth capacitor and the thirty-third capacitor, and the other end of the fifth capacitor is connected with a thirty-eighth pin of the DSP processing chip, a thirty-third pin of the DSP processing chip is connected to a DAC left output channel through a third resistor and a fifty-second capacitor which are connected in series, a thirty-second pin of the DSP processing chip is connected to a DAC right output channel through a fourth resistor and a fifty-third capacitor which are connected in series, the thirty-third pin of the DSP processing chip is grounded through a parallel circuit formed by a seventeenth capacitor and a forty-fourth capacitor, a twentieth pin of the DSP processing chip is grounded through a twenty-first capacitor, the twentieth pin of the DSP processing chip is also connected to a first power supply through a ninth resistor, the twenty-ninth pin of the DSP processing chip is connected to the preceding stage sound effect processing circuit through an eighth capacitor, the twenty-eighth pin of the DSP processing chip is connected to the preceding stage sound effect processing circuit through a twenty-thirteen capacitor, and the twenty-seventh pin of the DSP processing chip is connected to the preceding stage sound effect processing circuit through a twenty-fourteenth capacitor, and a twenty-sixth pin of the DSP processing chip is connected to the preceding stage sound effect processing circuit through a twenty-seventh capacitor.

Further, the preceding stage sound effect processing circuit comprises a first operational amplifier, a second operational amplifier, a seventh resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a twenty-ninth capacitor, a seventeenth resistor, a thirty-third capacitor, an eighteenth resistor, a fifty-seventh capacitor, a fifty-eighth capacitor, an eighth resistor and a sixteenth resistor;

the eighth capacitor is connected to the equidirectional input end of the first operational amplifier through a seventh resistor, the twenty-third capacitor is connected to the reverse input end of the first operational amplifier through a thirteenth resistor, the twenty-fourth capacitor is connected to the equidirectional input end of the second operational amplifier through a fourteenth resistor, the twenty-seventh capacitor is connected to the reverse input end of the second operational amplifier through a fifteenth resistor, the output end of the first operational amplifier is connected to the reverse input end of the first operational amplifier through a parallel circuit formed by a twenty-ninth capacitor and a seventeenth resistor, the output end of the second operational amplifier is connected to the reverse input end of the second operational amplifier through a parallel circuit formed by a thirty capacitor and an eighteenth resistor, the output end of the first operational amplifier is sequentially connected to a series circuit formed by a fifty-seventh capacitor and an eighth resistor, and the output end of the second operational amplifier is sequentially connected to the fourth operational amplifier And a series circuit consisting of the fifty-eight capacitor and the sixteenth resistor is output after being connected in parallel.

Further, the host end is installed in the mobile sound box, the wireless receiving module and the amplifier module are installed in the receiving box, and the receiving box is connected to the earphone.

Further, the mobile sound box is also provided with a containing box for placing the slave machine end and the wireless microphone.

Further, still include: a strap, the receiving box being mounted on the strap, the strap being annularly connectable in a snap-fit manner.

Above-mentioned the embodiment of the utility model provides an in one or more technical scheme have following advantage: the utility model discloses a host computer end, follow machine end and wireless microphone constitute one kind and take the wireless mobile sound who returns to listen, the host computer end includes MP3 decoding module, wireless microphone receiving module, audio processing module, power amplification module, wireless transmitting module and first power module, include wireless receiving module, amplifier module, earphone and second power module from the machine end. By using the mobile sound box with the wireless back listening function, the influence caused by environmental interference factors in the sound box using process of a user can be reduced, the singing effect of the user can be clearly obtained, and the use experience of the user is greatly improved; meanwhile, the manufacturing cost of the sound system is reduced as much as possible, the cost performance is improved, and the whole mobile sound system can be accommodated in the mobile sound box, so that the mobile sound box is very convenient to carry and transport.

Drawings

Fig. 1 is a block diagram of a host end and a slave end of a specific embodiment of a mobile audio device with wireless listen-back according to the present invention;

fig. 2 is a schematic circuit diagram of a sound effect processing module according to an embodiment of the mobile audio device with wireless listen-back of the present invention;

fig. 3 is a schematic circuit diagram of a power amplification module according to an embodiment of the mobile audio device with wireless listen-back of the present invention;

fig. 4 is a schematic circuit diagram of an MP3 decoding module according to an embodiment of the present invention;

fig. 5 is a schematic circuit diagram of a wireless receiving module according to a specific embodiment of the mobile audio device with wireless listen-back of the present invention;

fig. 6 is a schematic circuit diagram of an amplifier module according to a specific embodiment of the mobile audio device with wireless listen-back of the present invention;

fig. 7 is an application schematic diagram of a specific embodiment of a mobile audio device with wireless listen-back function.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, the utility model discloses a mobile sound with wireless hearing back, including host computer end, slave computer end and wireless microphone;

In the embodiment of the present invention, the MP3 decoding module at the host end is used for decoding background music and accompaniment music, wherein the decoding chip can be any one of the mainstream MCU chips; the wireless microphone receiving module is used for establishing communication connection with a wireless microphone used by a user; the sound effect processing module is used for fusing singing sound effect with background sound effect and accompaniment sound effect, on one hand, processed audio signals are sent to the slave end through the wireless transmitting module, on the other hand, the processed audio signals are amplified through the power amplifying module and are sounded by the sound equipment, the first power supply module provides power for other modules in the master end, the voltage grade can be specifically divided into 12V, 9V and 5V, and the selection is carried out according to the working voltage of each module.

Referring to fig. 5 and 6, the wireless receiving module in the slave terminal is configured to receive an audio signal of the wireless transmitting module and send the audio signal to the amplifier module, the amplifier module is configured to amplify the audio signal and transmit the audio signal to the earphone, the second power supply module provides power for other modules in the slave terminal, and the voltage level is generally set to 3.7V.

First power module, second power module all can adopt the lithium cell power supply, do not need unnecessary wiring when outdoor use, also need not worry very conveniently for the power of looking for the adaptation.

Further as a preferred embodiment, the wireless microphone is provided with a VHF wireless audio signal transmitting device which can be used for transmitting VHF wireless audio signals; the wireless microphone receiving module is provided with a VHF wireless audio signal receiving device which can be used for receiving the VHF wireless audio signal, and the VHF wireless audio signal receiving device is connected to the sound effect processing module.

The embodiment of the utility model provides an in, wireless microphone and wireless microphone receiving module adopt the frequency band by 30Mhz to 300MHz, the wavelength range is 1m ~ 10m VHF (very high frequency) radio wave, and this wireless audio signal transmission's receiving emission device is of high quality on short distance communication, and output tone quality's effect is very good, and correlation technique is very ripe, equipment low cost.

Referring to fig. 2, further as a preferred embodiment, the sound effect processing module includes a karaoke effect processing circuit and a preceding stage sound effect processing circuit; the VHF wireless audio signal receiving device is connected with the karaoke effect processing circuit, and the MP3 decoding module is connected with the karaoke effect processing circuit.

As a preferred embodiment, the front stage sound effect processing circuit is connected to the wireless transmitting module; the wireless transmitting module is provided with a UHF wireless audio signal transmitting device.

The embodiment of the utility model provides an in, distinguish for the communication band phase with wireless microphone and wireless microphone receiving module use, guarantee that sound system's work can normally go on, selectable frequency is 300 ~ 3000MHz, and the wavelength is at 1m ~ 1 dm's UHF (ultrahigh frequency) radio wave. Similarly, UHF wireless sound technology is also well established, which can effectively reduce the cost of the device. The S _ OUT output of the preceding stage sound effect processing circuit can be connected to the UHF wireless audio signal transmitting device.

Referring to fig. 2 and fig. 3, in a further preferred embodiment, the pre-stage sound effect processing circuit is further connected to the power amplifying module.

The embodiment of the utility model provides an in, preceding stage sound effect processing circuit among the sound effect processing module finally accomplishes the relevant processing back of singing audio signal, will audio signal sends to the power amplification module based on T131116D2 chip and peripheral circuit is constituteed, specifically, S _ OUT output through preceding stage sound effect processing circuit will audio signal inputs the fifth pin of T131116D2 chip through sixth thirteen electric capacity C65, and final power amplification module is right audio signal enlargies and sends sound by the speaker subassembly in the stereo set.

Referring to fig. 2 and 4, in a further preferred embodiment, the MP3 decoding module includes an MCU processing chip, and the karaoke effect processing circuit includes a DSP processing chip, a fifth resistor R5, a sixth resistor R6, a forty-second capacitor C42, a thirty-third capacitor C33, a fourth capacitor C4, a fifth capacitor C5, a third resistor R3, a fifty-second capacitor C52, a fourth resistor R4, a fifty-third capacitor C53, a thirty-seventh capacitor C37, a forty-fourth capacitor C44, a twenty-first capacitor C21, a ninth resistor R9, an eighth capacitor C8, a twenty-third capacitor C23, a twenty-fourth capacitor C24, and a twenty-seventh capacitor C27;

the twentieth pin of the MCU processing chip is connected to the eleventh pin of the DSP processing chip through an SDA signal line in series with a fifth resistor R5, the twenty-fifth pin of the MCU processing chip is connected to the twelfth pin of the DSP processing chip through an SCL signal line in series with a sixth resistor R6, the fourth pin of the DSP processing chip is grounded through a parallel circuit composed of a fourth twelfth capacitor C42 and a thirty-third capacitor C33, the fourth pin of the DSP processing chip is further connected to one end of a fourth capacitor C4 through a parallel circuit composed of a fourth twelfth capacitor C42 and a thirty-third capacitor C33, the other end of the fourth capacitor C4 is connected to a thirty-seventh pin of the DSP processing chip, the fourth pin of the DSP processing chip is further connected to one end of a fifth capacitor C5 through a parallel circuit composed of a fourth twelfth capacitor C42 and a thirty-third capacitor C33, and the other end of the fifth capacitor C5 is connected to a thirty-eighth pin of the DSP processing chip, the thirty-third pin of the DSP processing chip is connected to the DAC left output channel through a third resistor R3 and a fifty-second capacitor C52 in series, the thirty-second pin of the DSP processing chip is connected to the DAC right output channel through a fourth resistor R4 and a fifty-third capacitor C53 in series, the thirty-third pin of the DSP processing chip is grounded through a parallel circuit composed of a seventeenth capacitor C37 and a forty-fourth capacitor C44, the twentieth pin of the DSP processing chip is grounded through a twenty-first capacitor C21, the twentieth pin of the DSP processing chip is further connected to the first power supply through a ninth resistor R9, the twenty-ninth pin of the DSP processing chip is connected to the preceding stage sound effect processing circuit through an eighth capacitor C8, the twenty-eighth pin of the DSP processing chip is connected to the preceding stage sound effect processing circuit through a thirteenth capacitor C23, and the twenty-seventh pin of the DSP processing chip is connected to the preceding stage sound effect processing circuit through a fourteenth capacitor C24, and a twenty-sixth pin of the DSP processing chip is connected to the front stage sound effect processing circuit through a twenty-seventh capacitor C27.

Further as a preferred embodiment, the pre-stage sound effect processing circuit comprises a first operational amplifier U1A, a second operational amplifier U1B, a seventh resistor R7, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a twenty-ninth capacitor C29, a seventeenth resistor R17, a thirty-third capacitor C30, an eighteenth resistor R18, a fifty-seventh capacitor C57, a fifty-eighth capacitor C58, an eighth resistor R8 and a sixteenth resistor R16;

the eighth capacitor C8 is connected to the inverting input terminal of the first operational amplifier U1A through a seventh resistor R7, the twenty-third capacitor C23 is connected to the inverting input terminal of the first operational amplifier U1A through a thirteenth resistor R13, the twenty-fourth capacitor C24 is connected to the inverting input terminal of the second operational amplifier U1B through a fourteenth resistor R14, the twenty-seventh capacitor C27 is connected to the inverting input terminal of the second operational amplifier U1B through a fifteenth resistor R15, the output terminal of the first operational amplifier U1A is connected to the inverting input terminal of the first operational amplifier U1A through a parallel circuit of a twenty-ninth capacitor C29 and a seventeenth resistor R17, the output terminal of the second operational amplifier U1U 5 is connected to the inverting input terminal of the second operational amplifier U1B through a parallel circuit of a thirty-ninth capacitor C57323 and an eighteenth resistor R18, and the output terminal of the first operational amplifier U1A is connected to the inverting input terminal of the eighth capacitor C8 and the eighth resistor R639 through a parallel circuit of the first operational amplifier U1A The series circuit and the output end of the second operational amplifier U1B are connected in series with a series circuit composed of a fifty-eighth capacitor C58 and a sixteenth resistor R16 in sequence and then output.

The embodiment of the utility model provides an in, karaoke effect processing circuit is mainly used for adjusting volume, tone and reverberation and handles, and preceding stage audio processing circuit then is used for further optimizing the audio, and its concrete principle explains as follows: the DSP processing chip acquires decoded background music and accompaniment sound effects from an eleventh pin and a twelfth pin, acquires singing audio data of a user from the wireless microphone receiving module through the seventeenth pin and the nineteenth pin, and after volume and tone adjustment fusion and reverberation, on one hand, the decoded background music and the accompaniment sound effects can be directly output to left and right sound channels through the thirty-second pin and the thirty-third pin, and an external power amplifier or an earphone can be connected to acquire and play audio processed by the audio processing chip.

Referring to fig. 7, in a further preferred embodiment, the host end is installed in the mobile audio box, the wireless receiving module and the amplifier module are installed in the receiving box, and the receiving box is connected to the earphone.

Further preferably, the mobile audio box further comprises a receiving box for receiving the slave unit and the wireless microphone.

Further, as a preferred embodiment, the method further comprises: a strap, the receiving box being mounted on the strap, the strap being annularly connectable in a snap-fit manner.

The embodiment of the utility model provides an in, provide an embodiment is installed to this take wireless removal stereo set of returning to listen actually: the main part end is mainly installed in the mobile sound box, and during the use the distance that the mobile sound box is from the user can be adjusted at will, and the user side mainly includes wireless microphone, receiving box, bandage and earphone, and the receiving box can receive the audio signal that the mobile sound box transmitted and come and amplify the back and transmit to the earphone for the user clearly acquires the effect that oneself song sung out through the earphone, can effectively reduce the influence that environmental factor brought, improves user's use and experiences, the bandage can be fixed the receiving box on user's health, makes the user receive the box when carrying out the dance action and can not cause bad interference yet, and is same, the bandage also can be received and is included together in the case that holds of mobile sound box. The mobile sound box with the wireless return hearing function in the embodiment has the advantages that the structure is simple, the manufacturing cost is low, the equipment does not need to be subjected to professional installation layout and complex wiring procedures, and can be opened and used anytime and anywhere, so that the mobile sound box is very convenient; after the use, the whole outdoor sound system can be collected and installed in the mobile sound box, and the carrying and the transportation are very convenient.

In the description herein, references to the description of "one embodiment," "another embodiment," or "certain embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a take wireless mobile sound who returns to listen which characterized in that: the system comprises a host end, a slave end and a wireless microphone;

2. A mobile audio device with wireless hearing back according to claim 1, wherein:

the wireless microphone is provided with a VHF wireless audio signal transmitting device which can be used for transmitting VHF wireless audio signals; the wireless microphone receiving module is provided with a VHF wireless audio signal receiving device which can be used for receiving the VHF wireless audio signal, and the VHF wireless audio signal receiving device is connected to the sound effect processing module.

3. A mobile audio device with wireless hearing back according to claim 2, wherein:

the sound effect processing module comprises a karaoke effect processing circuit and a preceding stage sound effect processing circuit; the VHF wireless audio signal receiving device is connected with the karaoke effect processing circuit, and the MP3 decoding module is connected with the karaoke effect processing circuit.

4. A mobile audio device with wireless hearing back according to claim 3, wherein:

the preceding stage sound effect processing circuit is connected to the wireless transmitting module; the wireless transmitting module is provided with a UHF wireless audio signal transmitting device.

5. A mobile sound with wireless hearing back as claimed in claim 4, wherein:

the preceding stage sound effect processing circuit is also connected to the power amplification module.

6. A mobile audio device with wireless hearing back according to claim 3, wherein:

the MP3 decoding module comprises an MCU processing chip, the karaoke effect processing circuit comprises a DSP processing chip, a fifth resistor, a sixth resistor, a forty-second capacitor, a thirty-third capacitor, a fourth capacitor, a fifth capacitor, a third resistor, a fifty-second capacitor, a fourth resistor, a fifty-third capacitor, a thirty-seventh capacitor, a forty-fourth capacitor, a twenty-first capacitor, a ninth resistor, an eighth capacitor, a twenty-third capacitor, a twenty-fourth capacitor and a twenty-seventh capacitor;

7. A mobile sound with wireless hearing back as claimed in claim 6, wherein:

the front stage sound effect processing circuit comprises a first operational amplifier, a second operational amplifier, a seventh resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a twenty-ninth capacitor, a seventeenth resistor, a thirty-th capacitor, an eighteenth resistor, a fifty-seventh capacitor, a fifty-eighth capacitor, an eighth resistor and a sixteenth resistor;

8. The mobile audio device with wireless hearing back of claim 1, further comprising: a mobile sound box and a receiving box;

the host end is arranged in the mobile sound box, the wireless receiving module and the amplifier module are arranged in the receiving box, and the receiving box is connected with the earphone.

9. A mobile audio device with wireless hearing back according to claim 8, wherein: the mobile sound box is also provided with a containing box for placing the slave machine end and the wireless microphone.

10. The mobile audio device with wireless listen back of claim 8, further comprising: a strap, the receiving box being mounted on the strap, the strap being annularly connectable in a snap-fit manner.