Integrated DAB+BT and combination machine with voice enhancement function

Abstract

The utility model relates to an integrated DAB+BT and combination machine with voice enhancement function, relate to audio playing equipment technical field. Solve the technical insufficient that hearing experience is poor when watching TV of existing hearing impaired population, including wireless communication connection's base and host computer, base contains at least one HDMI ARC audio input interface, and is used for wired access of HDMI ARC audio input interface audio signal conversion 2.4GHz wireless transmission signal sends wireless audio transmission module to host computer, host computer includes: radio module, wireless audio receiving module, bluetooth audio processing module and audio power amplifier module. On the basis of not influencing TV set's own audio amplifier function, can carry out sound enhancement to the person with hearing impairment alone, improve hearing experience, convenient operation and use, will not cause noise influence to others. Base and host computer adopt 2.4GHz special wireless protocol, not standard bluetooth protocol, to ensure lower delay and higher synchronization accuracy.

Description

Technical Field

[0001] This utility model relates to the field of audio playback device technology. Background Technology

[0002] For people with hearing impairments, watching television presents a dilemma: normal volume is difficult to hear clearly, while turning up the volume can disturb neighbors. While Bluetooth headphones can solve the problem of not disturbing others, they lack the spaciousness of traditional speakers, failing to reproduce a realistic soundstage and significantly reducing the immersive viewing experience, and also lacking in bass. Existing Bluetooth speakers, while improving the listening experience, typically disable the original TV speakers upon connection, making them unsuitable for multi-person viewing scenarios, and their operation is complex and unfriendly to elderly people with hearing impairments. Therefore, there is an urgent need for a solution that can provide near-field sound enhancement specifically for people with hearing impairments without affecting the functionality of the original TV speakers. Utility Model Content

[0003] In summary, the purpose of this utility model is to address the shortcomings of existing technologies that result in poor auditory experience for people with hearing impairments when watching television, and to propose a combination unit that integrates DAB+BT and has voice enhancement functions.

[0004] To address the technical shortcomings of this utility model, the following technical solution is adopted: A combination unit integrating DAB+BT and voice enhancement functions is characterized in that the combination unit includes a base with wireless communication connection and a main unit; the base includes at least one HDMI ARC audio input interface for connecting to the HDMI ARC interface of a TV to obtain the audio signal output by the TV, and a wireless audio transmission module for converting the wired audio signal from the HDMI ARC audio input interface into a 2.4GHz wireless transmission signal and sending it to the main unit; the main unit includes: a radio module for receiving DAB digital broadcast or FM radio signals; a wireless audio receiving module for wirelessly receiving the audio signal output by the TV in cooperation with the wireless audio transmission module; a Bluetooth audio processing module for connecting to a Bluetooth audio device to receive Bluetooth audio signals, and for switching between the broadcast audio signal output by the radio module, the audio signal output by the wireless audio receiving module, and the Bluetooth audio signal for analog audio signal output; and an audio power amplification module for amplifying the analog audio signal output by the Bluetooth audio processing module and playing the audio through a speaker.

[0005] The beneficial effects of this invention are as follows: This invention can enhance sound for individuals with hearing impairments without affecting the built-in speaker function of the television, allowing them to clearly hear dialogue while watching television, thus improving the auditory experience. It is easy to operate and will not cause noise disturbance to others. The base and main unit of this invention use a proprietary 2.4GHz wireless protocol instead of the standard Bluetooth protocol to ensure lower latency and higher synchronization accuracy. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a structural block diagram of the base portion of this utility model; Figure 4 This is a structural block diagram of the main unit of this utility model; Figure 5 This is a circuit diagram of the base portion of this utility model; Figure 6 This is a circuit diagram of the radio module in the main unit of this utility model; Figure 7 This is a circuit diagram of the Bluetooth audio processing module in the host of this utility model; Figure 8 This is a circuit diagram of the audio power amplifier module in the host of this utility model; Figure 9 This is a circuit diagram of each interface circuit in the host of this utility model. Detailed Implementation

[0007] The structure of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.

[0008] Reference Figures 1 to 2As shown in the diagram, this utility model discloses a combination unit integrating DAB+BT and voice enhancement functions. The combination unit includes a base 2 with wireless communication connection and a main unit 1. The main unit 1 has a structure and shape similar to an existing portable radio, which the user can place near their ear. For example, when a user is watching TV on a living room sofa, and the TV is too far from the sofa to hear the dialogue, and the user doesn't want to turn the TV volume up too high to avoid disturbing other family members or causing noise pollution, the main unit 1 can be detached from the base 2 and placed on the sofa. After detachment, the main unit 1 automatically switches to TV audio output. While the TV's built-in speakers play audio, the main unit 1 simultaneously plays TV audio at close range, achieving voice enhancement. It also provides a strong sense of immersion, delivering a deep, resonant bass effect and a better auditory experience. Functionally, this utility model also has the functions of a radio receiving DAB digital broadcast or FM radio signals, and a Bluetooth speaker receiving Bluetooth audio from Bluetooth audio devices.

[0009] Reference Figures 1 to 9 As shown, the specific structure adopted to achieve the above-mentioned functions of this utility model is as follows: The base 2 includes at least one HDMI ARC audio input interface for connecting to the HDMI ARC interface of a television to acquire the audio signal output by the television, and a wireless audio transmission module for converting the wired audio signal from the HDMI ARC audio input interface into a 2.4GHz wireless transmission signal and sending it to the host 1. That is, the base 2 is typically placed with the television during use, and is wiredly connected to the television via an HDMI cable, allowing it to simultaneously acquire the television's audio signal and wirelessly transmit it to the host 1 of this invention. To enable the base 2 to accommodate various types of audio signal input, the base 2 also includes an AUX audio input interface and an optical digital audio input interface; the AUX audio input interface, optical digital audio input interface, and HDMI ARC interface are connected to the wireless audio transmission module via an input signal selection and processing module; the input signal selection and processing module selects one audio signal from the AUX audio input interface, HDMI ARC interface, and optical digital audio input interface according to their priority from high to low and inputs it to the wireless audio transmission module.

[0010] The host 1 includes: The radio module is used to receive DAB digital broadcast or FM radio signals; it is equivalent to the circuit structure of a radio and also includes a display screen, power button, mode switch button, station access button, volume buttons, and other buttons.

[0011] A wireless audio receiving module is used in conjunction with the wireless audio transmitting module to wirelessly receive audio signals output by a television. The wireless audio transmitting and receiving modules of this invention are implemented using a proprietary 2.4GHz wireless protocol, which has lower transmission latency and higher audio synchronization accuracy compared with the wireless audio signal transmission of the standard Bluetooth protocol, ensuring the synchronization between the host's received television audio and the television's video picture.

[0012] The Bluetooth audio processing module is used to connect to Bluetooth audio devices to receive Bluetooth audio signals, and to switch between the broadcast audio signal output by the radio module, the audio signal output by the wireless audio receiving module, and the Bluetooth audio signal to output an analog audio signal. The audio power amplifier module is used to amplify the analog audio signal output by the Bluetooth audio processing module and play the audio through a speaker.

[0013] In practical implementation, since the base 2 is usually placed on a table and does not move, the base 2 can always be connected to an external power source. The main unit 1 can be charged directly by an external power source, or it can be automatically connected to the charging source when placed on the base 2. That is, the rear side of the base 2 is also provided with a transmitter power input port; the rear side of the main unit 1 is provided with an external power input port; the top of the base 2 is also provided with a positioning groove that cooperates with the main unit 1 for positioning, and the power output interface of the main unit 1 is provided in the positioning groove; the bottom of the main unit 1 is provided with a power receiving interface corresponding to the power output interface of the main unit 1.

[0014] To ensure that the host 1, after being removed from the base 2, automatically assumes the user may need to activate TV voice enhancement, the host 1 includes a TV mode automatic switching control circuit that detects the disconnection status of its power receiving interface and automatically switches to TV mode voice output. This circuit detects the connection status of the host's power receiving interface. When the host is detected to be separated from the base (i.e., the power receiving interface is disconnected), the system automatically prioritizes the output of the wireless audio receiving module, while simultaneously reducing the priority of the radio module and Bluetooth audio, seamlessly switching to TV audio reception mode without manual user intervention. If the system misinterprets the user's intent, the user can manually adjust to the desired mode using the mode switching button on the host. For example... Figure 5 The connection host interface in Figure 9 When the connection base adapter plate is disconnected and the main unit 1 is powered by the built-in battery, it means that the user has removed the main unit 1 from the base 2. If the user needs to enhance TV audio, the TV audio receiving mode can be automatically switched without the user having to make any operation selection, simplifying the user's operation. If the user's intention is misjudged, the user can manually switch to the desired mode using the mode switching button on the main unit.

[0015] In practical implementation, the input signal selection and processing module in base 2 can adopt the BP1032A2 high-performance 32-bit Bluetooth audio application processor U202, which integrates multi-channel audio input selection, digital signal processing, and priority management functions. The wireless audio transmission module can adopt the BP1532A2 high-performance low-power Bluetooth audio application processor U201.

[0016] The radio module in host 1 can use a microprocessor U1 of type FS2415P; the Bluetooth audio processing module can use a high-performance 32-bit Bluetooth audio application processor U3 of type BP1032A2; the wireless audio receiving module can use a high-performance low-power Bluetooth audio application processor U4 of type BP1532B2; and the audio power amplifier module can use an audio power amplifier U5 of type IU8309C.

[0017] In summary, the main inventive point of this utility model is that the base 2 converts external audio sources into 2.4GHz wireless digital signals and sends them to the host 1, which receives and converts them into audio signals and reproduces them as sound through a speaker. When the host 1 is in TV mode, the base 2, acting as a transmitter, automatically establishes a wireless connection after power-on. The base 2 can support the forwarding of various external audio sources, such as: 1. Analog audio signals via a 3.5mm audio cable; 2. HDMI (Arc) digital audio signals via a dedicated HDMI (Arc) cable; 3. Digital audio signals via an optical fiber cable. When the above three signal ports are connected simultaneously, there will be a priority order, with the AUX audio input interface having the highest priority. If no audio cable is plugged into the AUX audio input interface, the HDMI ARC interface will take priority, and the optical fiber digital audio input interface will be the last priority. It is simple and convenient to use, especially suitable for the elderly.

Claims

1. A combination unit integrating DAB+BT and voice enhancement function, characterized in that... The combined unit includes a base with wireless communication connection and a main unit; The base includes at least one HDMI ARC audio input interface for connecting to the HDMI ARC interface of a TV to obtain the audio signal output by the TV, and a wireless audio transmission module for converting the wired audio signal from the HDMI ARC audio input interface into a 2.4GHz wireless transmission signal and sending it to the host. The host includes: Radio module, used to receive DAB digital broadcast or FM radio signals; A wireless audio receiving module is used in conjunction with the aforementioned wireless audio transmitting module to wirelessly receive audio signals output by a television set. The Bluetooth audio processing module is used to connect to Bluetooth audio devices to receive Bluetooth audio signals, and to switch between the broadcast audio signal output by the radio module, the audio signal output by the wireless audio receiving module, and the Bluetooth audio signal to output an analog audio signal. The audio power amplifier module is used to amplify the analog audio signal output by the Bluetooth audio processing module and play the audio through a speaker.

2. The integrated DAB+BT and voice enhancement unit according to claim 1, characterized in that: The base is also equipped with an AUX audio input interface and an optical fiber digital audio input interface; the AUX audio input interface, the optical fiber digital audio input interface, and the HDMI ARC interface are connected to the wireless audio transmission module via an input signal selection and processing module; the input signal selection and processing module is used to select one audio signal from the AUX audio input interface, the HDMI ARC interface, and the optical fiber digital audio input interface in descending order of priority to input to the wireless audio transmission module.

3. A combination unit integrating DAB+BT and voice enhancement function according to claim 1, characterized in that: The base has a transmitter power input port on its rear side; the main unit has an external power input port on its rear side; the base has a positioning groove on its top that cooperates with the main unit for positioning, and the main unit power output interface is located in the positioning groove; the main unit has a main unit power receiving interface on its bottom that corresponds to the main unit power output interface.

4. A combination unit integrating DAB+BT and voice enhancement function according to claim 2, characterized in that: The input signal selection and processing module uses a BP1032A2 32-bit Bluetooth audio application processor.

5. A combination unit integrating DAB+BT and voice enhancement function according to claim 1, characterized in that: The wireless audio transmitter module uses a BP1532A2 Bluetooth audio application processor.

6. A combination unit integrating DAB+BT and voice enhancement function according to claim 3, characterized in that: The host is equipped with a TV mode automatic switching control circuit, which is used to detect the connection status of the host's power receiving interface. When the host is detected to be separated from the base, the Bluetooth audio processing module automatically switches to TV audio receiving mode.

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