Bluetooth audio transmission system

Abstract

The utility model discloses a Bluetooth audio transmission system, which comprises a microcontroller, an intelligent audio system-on-chip, a Bluetooth audio system-on-chip, an analog-to-digital converter, an HDMI (High-Definition Multimedia Interface), an HDMI repeater, a power management module, an audio power amplification chip, a loudspeaker, a wireless communication module, a USB (Universal Serial Bus) interface, a display module and a storage module, wherein the intelligent audio system-on-chip is respectively connected with the microcontroller, the Bluetooth audio system-on-chip, the analog-to-digital converter, the HDMI interface, the HDMI repeater, the power management module, the audio power amplification chip, the loudspeaker, the wireless communication module, the USB interface, the display module and the storage module, and the HDMI repeater is respectively connected with the HDMI interface and the microcontroller. And the audio power amplification chip is connected with the loudspeaker. According to the utility model, the reliability of Bluetooth audio transmission and processing can be effectively improved, and more real auditory experience is provided for users.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bluetooth audio, especially relates to a bluetooth audio transmission system. BACKGROUND

[0002] Since its inception, Bluetooth technology has become an important standard for wireless audio transmission. The initial version of Bluetooth technology was mainly used for simple data transmission, but with the advancement of technology, its application range gradually expanded to the field of audio transmission. Bluetooth audio transmission technology has undergone several versions of updates, gradually improving the quality and efficiency of audio transmission. In the development process of Bluetooth technology, audio transmission has always been one of its important application fields, and users can connect earphones, sound boxes and other audio devices through Bluetooth to achieve wireless audio transmission. However, the current Bluetooth audio transmission system has high audio distortion and delay in the processing of audio data, and the current Bluetooth audio transmission system has insufficient performance for multi-channel audio transmission, which has made it unable to meet the high requirements of users for audio quality in terms of audio transmission and audio processing performance. SUMMARY

[0003] The utility model discloses a kind of Bluetooth audio transmission systems, which can effectively improve the reliability of Bluetooth audio transmission and processing, provide more real auditory experience for user.

[0004] To solve the above technical problems, the utility model provides a kind of Bluetooth audio transmission system, the Bluetooth audio transmission system includes: microcontroller, intelligent audio system level chip, bluetooth audio system level chip, analog-digital converter, high-definition multimedia interface HDMI interface, HDMI repeater, power management module, audio power amplifier chip, loudspeaker, wireless communication module, universal serial bus USB interface, display module and storage module, wherein:

[0005] The intelligent audio system level chip is connected with the microcontroller, bluetooth audio system level chip, analog-digital converter, high-definition multimedia interface HDMI interface, HDMI repeater, power management module, audio power amplifier chip, loudspeaker, wireless communication module, universal serial bus USB interface, display module and storage module respectively, the HDMI repeater is connected with the HDMI interface and microcontroller respectively, and the audio power amplifier chip is connected with the loudspeaker.

[0006] Optionally, the microcontroller adopts MT32G030K8 microcontroller, the MT32G030K8 microcontroller is connected with intelligent audio system level chip through universal asynchronous receiver-transmitter UART interface, and the MT32G030K8 microcontroller is connected with HDMI repeater through integrated circuit bus interface.

[0007] Optionally, the intelligent audio system chip adopts an MT8518S intelligent audio system chip.

[0008] Optionally, the Bluetooth audio system chip adopts an ATS2853 Bluetooth audio system chip, which is connected with the intelligent audio system chip through a UART interface.

[0009] Optionally, the analog-to-digital converter adopts a GC1808 stereo audio analog-to-digital converter, which is connected with the intelligent audio system chip through an integrated circuit bus interface.

[0010] Optionally, the HDMI repeater adopts a GSV6701A HDMI repeater, which is connected with the intelligent audio system chip through an integrated circuit bus interface.

[0011] Optionally, the power management module comprises an MT6395 power management chip, an SY8032I synchronous step-down DC-DC regulator, a BL2556 universal serial bus (USB) high-side current limit load switch chip, an RY1303 three-channel power management chip and an ME6322 linear voltage stabilizer chip.

[0012] Optionally, the audio power amplification chip adopts an FS2105SE audio power amplification chip.

[0013] Optionally, the wireless communication module adopts an EX41SEN wireless communication module.

[0014] Optionally, the storage module comprises a double data rate synchronous dynamic random access memory (DDR SDRAM) and an embedded multimedia card (eMMC).

[0015] The Bluetooth audio transmission system has the advantages that the MT8518S intelligent audio system chip has strong audio processing capability, and in combination with the high performance and low delay characteristics of the MT32G030K8 microcontroller, the performance of audio data processing can be effectively improved, lossless transmission of audio data is realized to reduce audio distortion and delay in the data processing process, and the stability of audio signal processing is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the Bluetooth audio transmission system in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the Bluetooth audio transmission system in this embodiment of the present invention. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] The Bluetooth audio transmission system provided in this embodiment of the utility model, such as Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the structure of the Bluetooth audio transmission system in an embodiment of this utility model is shown. Figure 2 The diagram illustrates the specific principle of a Bluetooth audio transmission system according to an embodiment of this utility model. The Bluetooth audio transmission system includes: a microcontroller, a smart audio system-on-a-chip (SoC), a Bluetooth audio system-on-a-chip (SoC), an analog-to-digital converter (ADC), an HDMI interface, an HDMI repeater, a power management module, an audio power amplifier chip, a speaker, a wireless communication module, a USB interface, a display module, and a storage module. The smart audio system-on-a-chip is connected to the microcontroller, Bluetooth audio system-on-a-chip, ADC, HDMI interface, HDMI repeater, power management module, audio power amplifier chip, speaker, wireless communication module, USB interface, display module, and storage module. The HDMI repeater is connected to the HDMI interface and the microcontroller. The audio power amplifier chip is connected to the speaker.

[0021] In the embodiment process of the utility model, microcontroller is responsible for the control logic of bluetooth audio transmission system, intelligent audio system level chip is the audio processing core of bluetooth audio transmission system, bluetooth audio system level chip is used for multichannel transmission of bluetooth audio, analog-to-digital converter is used for the conversion between digital audio signal and analog audio signal, high definition multimedia interface (High Definition Multimedia Interface, HDMI) interface is used for transmitting high-quality audio signal, HDMI repeater is used for extending the transmission distance of HDMI signal and enhancing signal strength, power management module is used for distributing power to different components of bluetooth audio transmission system, audio power amplifier chip is used for amplifying the volume of audio signal, loudspeaker is used for playing audio, wireless communication module is used for providing wireless connection functions such as bluetooth and WiFi, universal serial bus (Universal Serial Bus, USB) interface is used for connecting external devices, display module is connected with intelligent audio system level chip through USB interface, realizing the adjustment of audio control parameter and state monitoring, storage module is used for storing the program and data of bluetooth audio transmission system.

[0022] In the embodiment process of the utility model, the microcontroller adopts MT32G030K8 microcontroller, the MT32G030K8 microcontroller is connected with intelligent audio system level chip through universal asynchronous receiver / transmitter (Universal Asynchronous Receiver / Transmitter, UART) interface, and the MT32G030K8 microcontroller is connected with the HDMI repeater through the integrated circuit bus interface.

[0023] Specifically, the MT32G030K8 microcontroller is a low-power, high-performance 32-bit microcontroller, which is configured with a high-energy 32-bit reduced instruction set computer core, and the MT32G030K8 microcontroller is responsible for the control logic of the entire bluetooth audio transmission system, including switching of audio source, volume adjustment and sound effect mode selection, etc., the MT32G030K8 microcontroller is connected with the intelligent audio system level chip through the universal asynchronous receiver / transmitter (Universal Asynchronous Receiver / Transmitter, UART) interface, the MT32G030K8 microcontroller and the intelligent audio system level chip cooperate, which can effectively improve the performance of audio data processing, the MT32G030K8 microcontroller is connected with the HDMI repeater through the integrated circuit bus interface, and cooperates with the HDMI repeater, which can improve the operation performance of the HDMI repeater.

[0024] In the embodiment process of the utility model, the intelligent audio system level chip adopts MT8518S intelligent audio system level chip.

[0025] Specifically, the MT8518S intelligent audio system chip is a core component of a Bluetooth audio transmission system, as the core of audio processing, the MT8518S intelligent audio system chip has powerful audio decoding, processing and amplification capabilities, the intelligent audio system chip has powerful artificial intelligence algorithms, can improve the audio processing efficiency and response speed, and the cooperation with the microcontroller can overcome the synchronization error and delay in audio transmission and processing.

[0026] In the specific implementation process of the utility model, the Bluetooth audio system chip adopts ATS2853 Bluetooth audio system chip, and the ATS2853 Bluetooth audio system chip is connected with the intelligent audio system chip through a UART interface.

[0027] Specifically, the ATS2853 Bluetooth audio system chip has rich interfaces and powerful audio processing capabilities, and has a built-in high-quality, low-delay subband codec, which can reduce the delay problem in audio transmission while ensuring sound quality, and provide smooth and natural sound experience. The ATS2853 Bluetooth audio system chip supports dual-mode Bluetooth 5.3 technology, can realize multi-channel Bluetooth audio transmission, process several audio streams at the same time, provide more abundant audio experience, and adopt the Bluetooth audio system chip, even in complex environment, still can provide more stable transmission performance. The ATS2853 Bluetooth audio system chip is connected with the intelligent audio system chip through the UART interface, and can realize efficient and stable audio transmission while reducing operating power consumption.

[0028] In the specific implementation process of the utility model, the analog-to-digital converter adopts a GC1808 stereo audio analog-to-digital converter, and the GC1808 stereo audio analog-to-digital converter is connected with the intelligent audio system chip through an integrated circuit bus interface.

[0029] Specifically, the GC1808 stereo audio analog-to-digital converter is a high-performance stereo analog-to-digital converter, which has lower typical total harmonic distortion plus noise, higher signal-to-noise ratio and higher dynamic range, and can ensure high-quality audio conversion effect, and the GC1808 stereo audio analog-to-digital converter is connected with the intelligent audio system chip through the integrated circuit bus interface, can support decoding of multiple audio formats, and converts digital audio signals into analog audio signals to ensure high fidelity of audio.

[0030] In the specific implementation process of the utility model, the HDMI repeater adopts a GSV6701A HDMI repeater, and the GSV6701A HDMI repeater is connected with the intelligent audio system chip through an integrated circuit bus interface.

[0031] Specifically, the role of the GSV6701A HDMI repeater is to extend the transmission distance of the HDMI signal and enhance the signal strength, thereby avoiding the problem of stuttering or distortion caused by too long a line. By amplifying and forwarding the HDMI signal, the attenuation of the signal in the transmission process is effectively compensated for, ensuring a high-quality listening experience. The GSV6701A HDMI repeater is connected to the intelligent audio system-level chip through an integrated circuit bus interface, which can effectively improve the processing performance of the repeater.

[0032] In the specific implementation process of the utility model, the power management module includes MT6395 power management chip, SY8032I synchronous step-down DC-DC regulator, BL2556 universal serial bus USB high-side current-limited load switch chip, RY1303 three-channel power management chip and ME6322 linear voltage stabilizer chip.

[0033] Specifically, the MT6395 power management chip can minimize power consumption during operation and support multiple charging modes. The SY8032I synchronous step-down DC-DC regulator can provide an output current of up to 2A, has very low on-resistance, and can minimize conduction loss. At the same time, it can work in a wide input voltage range, ensuring stable operation and safety of the system. The BL2556 universal serial bus USB high-side current-limited load switch chip integrates several protection functions, including overcurrent protection, short circuit protection, overtemperature protection and undervoltage lock protection, etc. At the same time, it can effectively limit the output current to prevent overcurrent and short circuit conditions, protecting the power supply and load devices from damage. The RY1303 three-channel power management chip integrates several synchronous step-down regulators, which can still provide efficient output under light and heavy load operation. At the same time, it has the characteristics of wide input voltage range, high switching frequency and low power consumption. The ME6322 linear voltage stabilizer chip is a low dropout, high precision linear voltage stabilizer chip. At the same time, its low power consumption and high ripple suppression characteristics can effectively suppress the influence of the power supply on the circuit. The ME6322 linear voltage stabilizer chip has high-speed response characteristics and can respond to rapid changes in load current.

[0034] In the specific implementation process of the utility model, the audio power amplifier chip adopts FS2105SE audio power amplifier chip.

[0035] Specifically, the FS2105SE audio power amplifier chip is a dual-channel audio power amplifier chip with an operating efficiency of up to 90%. It can handle multiple output configurations. By outputting audio signals to the loudspeaker through the FS2105SE audio power amplifier chip, the sound quality can be improved, providing users with a more realistic listening experience.

[0036] The wireless communication module adopts an EX41SEN wireless communication module.

[0037] Specifically, the EX41SEN wireless communication module provides wireless connection functions such as Bluetooth and WiFi, so that the user can conveniently perform audio transmission and control through a mobile device or a network, the microcontroller communicates with the intelligent audio system-level chip and the EX41SEN wireless communication module through the control interface, and remote adjustment of audio control parameters and remote state monitoring are realized.

[0038] In the embodiment of the utility model, the storage module comprises a double-rate synchronous dynamic random access memory and an embedded multimedia card.

[0039] Specifically, the double-rate synchronous dynamic random access memory can provide a higher data transmission rate under the same bus frequency, adopts advanced synchronous circuit and delay-locked loop technology, can improve the data transmission speed without improving the clock frequency, and reduces power consumption, and at the same time, through accurate data filtering signals and resynchronization technology, the accurate transmission and storage of data are ensured, and the reliability and stability of the system are improved. The embedded multimedia card has intentional read-write performance, is durable and stable, has strong compatibility, and can ensure smooth use of the system.

[0040] To sum up, the utility model embodiment provides a kind of Bluetooth audio transmission system, MT8518S intelligent audio system-level chip has powerful audio processing capability, in combination with the high performance and low delay characteristics of MT32G030K8 microcontroller, the performance of audio data processing can be effectively improved by the cooperation of the two, realize the lossless transmission of audio data to reduce audio distortion and delay in data processing process, while ensuring the stability of audio signal processing. Through the cooperation of MT8518S intelligent audio system-level chip and ATS2853 Bluetooth audio system-level chip, the reliability of multi-channel Bluetooth audio transmission can be effectively improved, so that the simultaneous transmission of multiple sound channel audio signals can be realized, and the separation and positioning of sound can be realized. FS2105SE audio power amplifier chip can output high fidelity audio, to provide more real auditory experience for user.

[0041] Those skilled in the art can understand that all or part of the steps in the above-mentioned various methods of embodiments can be completed by programs instructing relevant hardware, and the programs can be stored in a computer-readable storage medium, which can include a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0042] In addition, the Bluetooth audio transmission system provided by the embodiment of the utility model is introduced in detail, the principle and implementation mode of the utility model are described by using specific examples in this paper, the above embodiment is only used for helping understanding the method and core idea of the utility model; meanwhile, for the general technical personnel in the art, according to the idea of the utility model, the specific implementation mode and application range will have the change, and the above is not understood as the limitation of the utility model.

Claims

1. A Bluetooth audio transmission system, characterized in that, The Bluetooth audio transmission system includes: a microcontroller, a smart audio system-on-a-chip, a Bluetooth audio system-on-a-chip, an analog-to-digital converter, an HDMI interface, an HDMI repeater, a power management module, an audio power amplifier chip, a speaker, a wireless communication module, a USB interface, a display module, and a storage module, wherein: The intelligent audio system-on-a-chip is connected to the microcontroller, Bluetooth audio system-on-a-chip, analog-to-digital converter, high-definition multimedia interface (HDMI), HDMI repeater, power management module, audio power amplifier chip, speaker, wireless communication module, universal serial bus (USB) interface, display module, and storage module. The HDMI repeater is connected to the HDMI interface and the microcontroller. The audio power amplifier chip is connected to the speaker. The microcontroller is an MT32G030K8 microcontroller, which is connected to the intelligent audio system-on-a-chip via a universal asynchronous transceiver (UART) interface and to the HDMI repeater via an integrated circuit bus interface. The intelligent audio system-on-a-chip is an MT8518S intelligent audio system-on-a-chip.

2. The Bluetooth audio transmission system as described in claim 1, characterized in that, The Bluetooth audio system-on-a-chip uses the ATS2853 Bluetooth audio system-on-a-chip, which is connected to the smart audio system-on-a-chip via a UART interface.

3. The Bluetooth audio transmission system as described in claim 1, characterized in that, The analog-to-digital converter is a GC1808 stereo audio analog-to-digital converter, which is connected to the intelligent audio system-on-a-chip via an integrated circuit bus interface.

4. The Bluetooth audio transmission system as described in claim 1, characterized in that, The HDMI repeater is a GSV6701A HDMI repeater, which is connected to the intelligent audio system-on-a-chip via an integrated circuit bus interface.

5. The Bluetooth audio transmission system as described in claim 1, characterized in that, The power management module includes an MT6395 power management chip, a SY8032I synchronous buck DC-DC regulator, a BL2556 universal serial bus USB high-side current limiting load switch chip, an RY1303 three-channel power management chip, and an ME6322 linear regulator chip.

6. The Bluetooth audio transmission system as described in claim 1, characterized in that, The audio power amplifier chip used is the FS2105SE audio power amplifier chip.

7. The Bluetooth audio transmission system as described in claim 1, characterized in that, The wireless communication module is an EX41SEN wireless communication module.

8. The Bluetooth audio transmission system as described in claim 1, characterized in that, The storage module includes a double-rate synchronous dynamic random access memory and an embedded multimedia card.

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