Wireless microphone sound system based on Bluetooth transceiving

Abstract

The utility model discloses a wireless microphone sound system based on Bluetooth receiving and transmitting. The wireless microphone sound system based on Bluetooth receiving and transmitting comprises a wireless microphone, an audio receiving complete machine, a Bluetooth module and sound equipment. The wireless microphone comprises a pickup sound head and a first digital audio processing module, the pickup sound head is connected with the first digital audio processing module, and the first digital audio processing module is connected with the Bluetooth module; the audio receiving complete machine comprises a second digital audio processing module and a third digital audio processing module, the second digital audio processing module is connected with the third digital audio processing module and the Bluetooth module, and the third digital audio processing module is connected with the sound equipment. According to the wireless microphone sound box, wireless audio signals are transmitted and received through Bluetooth, and the digital audio processing module used for reducing noise is arranged, so that the audio playing quality of the wireless microphone sound box is improved, and good auditory experience is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless microphone sound technology, in particular to a wireless microphone sound system based on Bluetooth transceiver. Background Art

[0002] At present, the microphones of audio products on the market are divided into two types: wired and wireless. However, no matter whether it is a wired microphone or a wireless microphone, there will be a large background noise during use, which brings a bad experience to users. For wireless microphones, there are currently two main solutions to eliminate background noise: one is to use the FM frequency band to receive and send wireless signals. This method is relatively low in cost, but has a relatively low signal-to-noise ratio, low frequency, is easily interfered, and has poor performance indicators, resulting in poor actual noise reduction effect; the second is to use a wifi module for receiving and sending wireless signals. This method has high performance indicators and better noise reduction effect than the FM frequency band method, but the disadvantages are high power consumption, short battery life, large size, and high cost, which is not suitable for wireless microphones. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art. The utility model provides a wireless microphone audio system based on Bluetooth transceiver, which adopts Bluetooth transceiver to transmit wireless audio signals and is provided with a digital audio processing module for noise reduction, so as to improve the audio playback quality of the wireless microphone audio and bring a good auditory experience to users.

[0004] The utility model provides a wireless microphone sound system based on Bluetooth transceiver, the wireless microphone sound system based on Bluetooth transceiver comprises a wireless microphone, an audio receiving machine, a Bluetooth module and a sound system;

[0005] The wireless microphone comprises a sound pickup head and a first digital audio processing module, the sound pickup head is connected to the first digital audio processing module, and the first digital audio processing module is connected to the Bluetooth module;

[0006] The audio receiving device comprises a second digital audio processing module and a third digital audio processing module. The second digital audio processing module is connected to the third digital audio processing module and the Bluetooth module respectively, and the third digital audio processing module is connected to the speaker.

[0007] Further, the first digital audio processing module includes a first control module, an A / D conversion module, a noise suppression and echo cancellation module, a first equalization gain module, and a first amplification module;

[0008] The first control module is respectively connected to the A / D conversion module, the noise suppression and echo cancellation module, the equalization gain module, and the first amplification module; the sound pickup head is connected to the A / D conversion module; the A / D conversion module is connected to the noise suppression and echo cancellation module; the noise suppression and echo cancellation module is connected to the first equalization gain module; the first equalization gain module is connected to the first amplification module; and the first amplification module is connected to the Bluetooth module.

[0009] Furthermore, the first control module is a TLSR9517C chip.

[0010] Furthermore, the second digital audio processing module includes a second control module, a second amplification module, a second equalization gain module, and a D / A conversion module;

[0011] The second control module is connected to the second amplification module, the second equalization gain module, and the D / A conversion module respectively, the second amplification module is connected to the Bluetooth module, the second equalization gain module is connected to the second amplification module, the D / A conversion module is connected to the second equalization gain module, and the D / A conversion module is connected to the third digital audio processing module.

[0012] Furthermore, the second control module is a TLSR9517C chip.

[0013] Further, the third digital audio processing module includes a third control module and a power amplifier module;

[0014] The third control module is connected to the second digital audio processing module and the power amplifier module respectively, and the power amplifier module is connected to the speaker.

[0015] Furthermore, the third control module is a BP1064L2 chip;

[0016] The power amplifier module is an ACM8625 chip.

[0017] Furthermore, the wireless microphone also includes a power module, the power module includes a lithium battery and a charging IC chip, the lithium battery is connected to the charging IC chip, and the charging IC chip is connected to the wireless microphone.

[0018] Furthermore, the charging IC chip is a ME2188 chip.

[0019] Furthermore, the wireless microphone audio system also includes an LED display screen, and the LED display screen is connected to the wireless microphone.

[0020] The utility model provides a wireless microphone sound system based on Bluetooth transceiver, which adopts Bluetooth transceiver to transmit wireless audio signals, is provided with a digital audio processing module for noise reduction, and adopts TLSR9517C as a control chip, which can improve the audio playback quality of the wireless microphone sound and bring a good auditory experience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a diagram of the architecture of a wireless microphone sound system based on Bluetooth transceiver in an embodiment of the present utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] An embodiment of the utility model provides a wireless microphone audio system based on Bluetooth transceiver, the system comprising a wireless microphone, an audio receiving machine, a Bluetooth module and an audio system; the wireless microphone comprises a sound pickup head and a first digital audio processing module, the sound pickup head is connected to the first digital audio processing module, and the first digital audio processing module is connected to the Bluetooth module; the audio receiving machine comprises a second digital audio processing module and a third digital audio processing module, the second digital audio processing module is connected to the third digital audio processing module and the Bluetooth module, and the third digital audio processing module is connected to the audio system.

[0025] In an optional implementation of this embodiment, Figure 1 As shown, Figure 1 The utility model shows an architecture diagram of a wireless microphone sound system based on Bluetooth transceiver in an embodiment of the utility model. The wireless microphone sound system based on Bluetooth transceiver includes a wireless microphone, an audio receiving device, a Bluetooth module and a sound system.

[0026] In an optional implementation of this embodiment, the Bluetooth module adopts 2.4G Bluetooth 5.2.

[0027] In an optional implementation of this embodiment, the wireless microphone includes a sound pickup head and a first digital audio processing module, the sound pickup head is connected to the first digital audio processing module, and the first digital audio processing module is connected to the Bluetooth module.

[0028] In an optional implementation of this embodiment, the pickup head is a capacitor head, and the pickup head is used to pick up audio signals.

[0029] Specifically, since the quality of the sound pickup capsule determines the quality of the sound obtained by the wireless microphone, the sound pickup capsules currently on the market are mainly of two types: dynamic and capacitive. The dynamic coil capsule uses a coil loaded on a vibration membrane to convert sound energy into an electrical energy signal in a high-density magnetic field. It has a simple structure and is cheap, but has certain limitations in the voice coil characteristics. The capacitive capsule uses the change in inter-electrode capacitance to directly convert sound into an electrical energy signal with an ultra-thin gold-plated vibration membrane. It can show extremely excellent original sound quality, with a very wide and flat high and low frequency response, very high sensitivity, large directivity and dynamic range, low distortion, light weight and drop resistance, and low touch noise. In this embodiment, a capacitive capsule is used.

[0030] In an optional implementation of this embodiment, the first digital audio processing module includes a first control module, an A / D conversion module, a noise suppression and echo cancellation module, an equalization gain module, and a first amplification module. The first control module is respectively connected to the A / D conversion module, the noise suppression and echo cancellation module, the first equalization gain module, and the first amplification module. The pickup head is connected to the A / D conversion module, the A / D conversion module is connected to the noise suppression and echo cancellation module, the noise suppression and echo cancellation module is connected to the first equalization gain module, the first equalization gain module is connected to the first amplification module, and the first amplification module is connected to the Bluetooth module.

[0031] In an optional implementation of this embodiment, the first control module is a TLSR9517C chip.

[0032] It should be noted that after the pickup head collects the audio signal, it is transmitted to the first digital audio processing module, the first control module controls it, the A / D conversion module converts the audio signal into an I2S digital signal format, the noise suppression and echo cancellation module performs noise suppression and echo cancellation on the audio signal, the first equalization gain module performs equalization gain on the audio signal, the amplification module amplifies the audio signal, and then transmits it to the audio receiving machine through the Bluetooth module.

[0033] In an optional implementation of this embodiment, the wireless microphone further includes a power module, the power module includes a lithium battery and a charging IC chip, the lithium battery is connected to the charging IC chip, and the charging IC chip is connected to the wireless microphone.

[0034] Specifically, the lithium battery is a double-cell AA battery.

[0035] More preferably, the charging IC chip is a ME2188 chip.

[0036] In an optional implementation of this embodiment, the wireless microphone is further provided with a hidden 2.4G antenna.

[0037] In an optional implementation of this embodiment, the wireless microphone further includes control buttons, and the control buttons include a switch button and an AD port sampling button.

[0038] In an optional implementation of this embodiment, the wireless microphone audio system further includes an LED display screen, and the LED display screen is connected to the wireless microphone.

[0039] In an optional implementation of this embodiment, the audio receiving machine includes a second digital audio processing module and a third digital audio processing module, the second digital audio processing module is connected to the third digital audio processing module and the Bluetooth module respectively, and the third digital audio processing module is connected to the speaker.

[0040] In an optional implementation of this embodiment, the second digital audio processing module includes a second control module, a second amplification module, a second equalization gain module, and a D / A conversion module. The second control module is respectively connected to the second amplification module, the second equalization gain module, and the D / A conversion module. The second amplification module is connected to the Bluetooth module, the second equalization gain module is connected to the second amplification module, the D / A conversion module is connected to the second equalization gain module, and the D / A conversion module is connected to the third digital audio processing module.

[0041] In an optional implementation of this embodiment, the second control module is a TLSR9517C chip.

[0042] It should be noted that after the audio receiving machine receives the audio signal sent by the wireless microphone, the second control module in the second digital audio processing module is controlled, the second amplification module amplifies the audio signal, the second equalization gain module performs equalization gain on the audio signal, and the D / A conversion module converts the audio signal into an ADC digital signal and transmits it to the third digital audio processing module.

[0043] In an optional implementation of this embodiment, the third digital audio processing module includes a third control module and a power amplifier module, the third control module is connected to the second digital audio processing module and the power amplifier module respectively, and the power amplifier module is connected to the speaker.

[0044] In an optional implementation of this embodiment, the third control module is a BP1064L2 chip.

[0045] In an optional implementation of this embodiment, the power amplifier module is an ACM8625 chip.

[0046] It should be noted that the third control module in the third digital audio processing module controls the audio signal to suppress its frequency, and the power amplifier module amplifies the audio signal before transmitting it to the audio device for output.

[0047] In summary, the embodiment of the utility model proposes a wireless microphone audio system based on Bluetooth transceiver, which adopts Bluetooth transceiver to transmit wireless audio signals, is provided with a digital audio processing module for noise reduction, and adopts TLSR9517C as a control chip, which can improve the audio playback quality of the wireless microphone audio and bring a good auditory experience to users.

[0048] The above is a detailed introduction to a wireless microphone audio system based on Bluetooth transceiver provided by an embodiment of the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method of the utility model and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A wireless microphone sound system based on Bluetooth transceiver, characterized in that: The wireless microphone audio system based on Bluetooth transceiver includes a wireless microphone, an audio receiver, a Bluetooth module and an audio system; The wireless microphone comprises a sound pickup head and a first digital audio processing module, the sound pickup head is connected to the first digital audio processing module, and the first digital audio processing module is connected to the Bluetooth module; The audio receiving device comprises a second digital audio processing module and a third digital audio processing module. The second digital audio processing module is connected to the third digital audio processing module and the Bluetooth module respectively, and the third digital audio processing module is connected to the speaker.

2. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 1, characterized in that: The first digital audio processing module includes a first control module, an A / D conversion module, a noise suppression and echo cancellation module, a first equalization gain module, and a first amplification module; The first control module is respectively connected to the A / D conversion module, the noise suppression and echo cancellation module, the first equalization gain module, and the first amplification module; the sound pickup head is connected to the A / D conversion module; the A / D conversion module is connected to the noise suppression and echo cancellation module; the noise suppression and echo cancellation module is connected to the first equalization gain module; the first equalization gain module is connected to the first amplification module; and the first amplification module is connected to the Bluetooth module.

3. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 2, characterized in that: The first control module is a TLSR9517C chip.

4. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 1, characterized in that: The second digital audio processing module includes a second control module, a second amplification module, a second equalization gain module, and a D / A conversion module; The second control module is connected to the second amplification module, the second equalization gain module, and the D / A conversion module respectively, the second amplification module is connected to the Bluetooth module, the second equalization gain module is connected to the second amplification module, the D / A conversion module is connected to the second equalization gain module, and the D / A conversion module is connected to the third digital audio processing module.

5. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 4, characterized in that: The second control module is a TLSR9517C chip.

6. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 1, characterized in that: The third digital audio processing module includes a third control module and a power amplifier module; The third control module is connected to the second digital audio processing module and the power amplifier module respectively, and the power amplifier module is connected to the speaker.

7. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 6, characterized in that: The third control module is a BP1064L2 chip; The power amplifier module is an ACM8625 chip.

8. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 1, characterized in that: The wireless microphone further comprises a power module, which comprises a lithium battery and a charging IC chip, wherein the lithium battery is connected to the charging IC chip, and the charging IC chip is connected to the wireless microphone.

9. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 8, characterized in that: The charging IC chip is a ME2188 chip.

10. The wireless microphone sound system based on Bluetooth transceiver as claimed in claim 1, characterized in that: The wireless microphone sound system also includes an LED display screen, and the LED display screen is connected to the wireless microphone.

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