Audio transmission device and karaoke equipment

Abstract

The utility model discloses an audio frequency transmission device and karaoke equipment, relate to audio equipment field, and this audio frequency transmission device includes first processing chip, second processing chip and third processing chip, and first processing chip is equipped with input interface group and output interface group, and output interface group includes analog human voice output end and digital audio output end, and second processing chip is equipped with analog human voice input end, and the original sound signal input end and audio synthesis output end, and analog human voice input end is connected with analog human voice output end, and third processing chip is equipped with digital audio input end, and the first original sound signal output end and second original sound signal output end, and digital audio input end is connected with digital audio output end, and the first original sound signal output end is connected with first processing chip, and second original sound signal output end is connected with the original sound signal input end. The independent processing chip division handles the audio signal, avoids signal interference, and promotes the stability of audio processing efficiency and signal transmission.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment, and in particular to an audio transmission device and a karaoke device. Background Technology

[0002] Existing audio processing devices mostly use a single processing chip to process analog human voice signals and digital audio signals simultaneously. Because they need to be compatible with multiple signal protocols, different types of signals are prone to mutual interference during transmission and processing. In addition, the single chip has an excessively high load, which affects audio processing efficiency and signal fidelity. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is that when a single processing chip processes analog human voice signals and digital audio signals at the same time, signal interference and low processing efficiency are likely to occur.

[0004] To address the aforementioned problems, this utility model discloses an audio transmission device. By using three independent processing chips to process analog and digital audio signals, mutual interference between different types of signals is avoided, thereby improving audio processing efficiency and signal transmission stability.

[0005] On one hand, this utility model provides an audio transmission device, which includes a first processing chip, a second processing chip, and a third processing chip; the first processing chip is provided with an input interface group and an output interface group, the input interface group is used to receive audio signals, and the output interface group includes an analog voice output terminal and a digital audio output terminal; the second processing chip is provided with an analog voice input terminal, a noise reduction signal input terminal, and an audio synthesis output terminal, the analog voice input terminal being electrically connected to the analog voice output terminal; the third processing chip is provided with a digital audio input terminal, a first noise reduction signal output terminal, and a second noise reduction signal output terminal, the digital audio input terminal being electrically connected to the digital audio output terminal, the first noise reduction signal output terminal being electrically connected to the first processing chip, and the second noise reduction signal output terminal being electrically connected to the noise reduction signal input terminal; the audio synthesis output terminal is used to connect to an external playback device.

[0006] A further technical solution is that the input interface group of the first processing chip includes a wireless audio interface, a wired audio interface, and a host computer interface.

[0007] A further technical solution is that the third processing chip further includes an original sound cancellation processing module, the signal input terminal of which is connected to the digital audio input terminal, and the signal output terminal of which is connected to the first original sound cancellation signal output terminal and the second original sound cancellation signal output terminal, respectively.

[0008] A further technical solution is that the second processing chip further includes an audio synthesis module, which is connected to the analog human voice input terminal and the first original sound signal input terminal, respectively, and the signal output terminal of the audio synthesis module is connected to the audio synthesis output terminal.

[0009] A further technical solution includes an analog signal transmission link; the analog signal transmission link is connected between the analog voice output terminal and the analog voice input terminal, and the analog signal transmission link integrates an analog protocol adapter circuit.

[0010] A further technical solution includes a digital signal transmission link; the digital signal transmission link is connected between the digital audio output terminal and the digital audio input terminal, and the digital signal transmission link integrates a digital protocol adaptation circuit.

[0011] A further technical solution is that the audio synthesis output terminal is connected to at least one of a speaker interface, a headphone interface, and an audio interface.

[0012] On the other hand, the present invention also provides a karaoke device, including an audio transmission device as described in any of the above embodiments.

[0013] Compared with the prior art, the technical effects achieved by the embodiments of this utility model include:

[0014] The three chips operate independently yet coordinate through a hardware link: the first processing chip focuses on signal input and separation, outputting two signals; the third processing chip focuses on the digital signal's de-audio processing, providing feedback on the processed signal; and the second processing chip focuses on the synthesis of the analog signal and the de-audio signal, outputting the final audio. By having three independent chips handle analog and digital signals separately, interference problems caused by a single chip processing multiple signal types simultaneously are avoided, improving the stability and processing efficiency of audio transmission. The structural design of signal separation transmission and targeted processing ensures the integrity of both analog and digital audio signals, reducing distortion.

[0015] The design of independent hardware units and dedicated integrated circuits ensures that each chip performs only the signal processing tasks that match its function, avoiding resource waste and signal interference caused by functional overlap, and significantly improving the overall processing efficiency and stability of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are 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 A structural block diagram of an audio transmission device provided for an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of the structure of an audio transmission device provided for an embodiment of this utility model.

[0019] Figure Labels

[0020] 1. First processing chip; 2. Second processing chip; 3. Third processing chip;

[0021] 11. Input interface group; 12. Output interface group;

[0022] 21. Analog voice input terminal; 22. Input terminal for original audio signal removal; 23. Audio synthesis output terminal;

[0023] 31. Digital audio input terminal; 32. First output terminal for original audio signal cancellation; 33. Second output terminal for original audio signal cancellation. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0026] It should also be understood that the terminology used in this specification of embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the present invention. As used in this specification of embodiments of the present invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0027] See Figures 1-2This utility model provides an audio transmission device. The audio transmission device includes a first processing chip 1, a second processing chip 2, and a third processing chip 3. The first processing chip 1 has an input interface group 11 and an output interface group 12. The input interface group 11 is used to receive audio signals, and the output interface group 12 includes an analog voice output terminal and a digital audio output terminal. The second processing chip 2 has an analog voice input terminal 21, a noise-canceling signal input terminal 22, and an audio synthesis output terminal 23. The analog voice input terminal 21 is electrically connected to the analog voice output terminal. The third processing chip 3 has a digital audio input terminal 31, a first noise-canceling signal output terminal 32, and a second noise-canceling signal output terminal 33. The digital audio input terminal 31 is electrically connected to the digital audio output terminal, the first noise-canceling signal output terminal 32 is electrically connected to the first processing chip 1, and the second noise-canceling signal output terminal 33 is electrically connected to the noise-canceling signal input terminal 22. The audio synthesis output terminal 23 is used to connect to an external playback device. Specific descriptions of each component are as follows:

[0028] In this embodiment, the first processing chip 1, the second processing chip 2, and the third processing chip 3 are three independent hardware processing units. The input interface group 11 of the first processing chip 1 is used to receive audio signals, the analog voice output terminal is used to output the separated analog voice signal, and the digital audio output terminal is used to output the separated digital audio signal. The analog voice input terminal 21 of the second processing chip 2 is used to receive the analog voice signal, the voice-removed signal input terminal 22 of the second processing chip 2 is used to receive the voice-removed audio signal, and the audio synthesis output terminal 23 is used to output the final synthesized audio signal. The digital audio input terminal 31 of the third processing chip 3 is used to receive the digital audio signal, the first voice-removed signal output terminal 32 is used to transmit the voice-removed audio signal to the first processing chip 1, and the second voice-removed signal output terminal 33 is used to transmit the voice-removed audio signal to the second processing chip 2. The third processing chip 3 is used to process the human voice in the audio; specifically, it removes the human voice according to a preset ratio, for example, by removing the human voice volume by 100%, meaning the voice-removed audio signal only contains the accompaniment. In other embodiments, those skilled in the art may set other elimination ratios, which will not exceed the protection scope of this utility model.

[0029] The audio transmission device operates as follows:

[0030] After the external audio signal is input through the input interface group 11 of the first processing chip 1, it is separated into analog human voice signal and digital audio signal. The analog human voice signal is transmitted to the analog human voice input terminal 21 of the second processing chip 2 through the analog human voice output terminal of the first processing chip 1. The digital audio signal is transmitted to the digital audio input terminal 31 of the third processing chip 3 through the digital audio output terminal of the first processing chip 1. After being processed by the third processing chip 3, a de-audio signal is generated. The de-audio signal is transmitted to the de-audio signal input terminal 22 of the first processing chip 1 and the second processing chip 2 through the first de-audio signal output terminal 32 and the second de-audio signal output terminal 33, respectively. The second processing chip 2 combines the received analog human voice signal and the de-audio signal and finally transmits them to the external playback device through the audio synthesis output terminal 23.

[0031] The technical effects that can be achieved by the embodiments of this utility model include:

[0032] The three chips operate independently yet coordinate through a hardware link: the first processing chip 1 focuses on signal input and separation, outputting two signals; the third processing chip 3 focuses on the digital signal's de-audio processing, providing feedback on the processed signal; and the second processing chip 2 focuses on the synthesis of the analog signal and the de-audio signal, outputting the final audio. By having three independent chips process analog and digital signals separately, interference problems caused by a single chip processing multiple signal types simultaneously are avoided, improving the stability and processing efficiency of audio transmission. The structural design of signal separation transmission and targeted processing ensures the integrity of both analog and digital audio signals, reducing distortion.

[0033] The design of independent hardware units and dedicated integrated circuits ensures that each chip performs only the signal processing tasks that match its function, avoiding resource waste and signal interference caused by functional overlap, and significantly improving the overall processing efficiency and stability of the device.

[0034] See also Figures 1-2 In this embodiment, the input interface group 11 of the first processing chip 1 includes a wireless audio interface, a wired audio interface, and a host computer interface.

[0035] Specifically, wireless audio interfaces include Bluetooth and Wi-Fi audio interfaces; wired audio interfaces include 3.5mm audio interfaces and USB interfaces; host computer interfaces include RS232 and Ethernet interfaces; and input interface group 11 is used to adapt to different types of external audio signal sources.

[0036] When the external audio signal is a wireless signal, such as a Bluetooth microphone signal, it is connected through the wireless audio interface; when the external audio signal is a wired signal, such as a wired microphone or CD player signal, it is connected through the wired audio interface; when the external audio signal is a control audio signal output from a host computer, such as a computer or mixing console, it is connected through the host computer interface. After all types of signals enter the first processing chip 1 through the input interface group 11, a unified signal separation process is performed.

[0037] The design of multiple input interfaces makes the device compatible with various signal sources such as wireless, wired, and host computers, expanding the applicable scenarios of the device such as home karaoke, stage performances, and recording studios, and improving the versatility of the device.

[0038] Furthermore, the third processing chip 3 also includes an original sound cancellation processing module. The signal input terminal of the original sound cancellation processing module is connected to the digital audio input terminal 31, and the signal output terminal of the original sound cancellation processing module is connected to the first original sound cancellation signal output terminal 32 and the second original sound cancellation signal output terminal 33, respectively.

[0039] Specifically, the original sound removal processing module is used to perform original sound removal processing on digital audio signals, such as removing vocals while retaining the accompaniment.

[0040] After the digital audio signal enters through the digital audio input terminal 31 of the third processing chip 3, it is directly transmitted to the original sound removal processing module. The module processes the signal through algorithms such as frequency filtering and channel separation to remove the original sound components in the digital audio and generate an original sound removal signal. The processed signal is transmitted through the module output terminal to the two original sound removal signal output terminals of the third processing chip 3, and then distributed to the first processing chip 1 and the second processing chip 2.

[0041] The integrated audio cancellation processing module enables the third processing chip 3 to perform audio cancellation functions on digital audio, avoiding signal delays caused by relying on external modules, improving processing accuracy and efficiency, and is especially suitable for scenarios such as karaoke and karaoke where accompaniment and vocals need to be separated.

[0042] Furthermore, the second processing chip 2 also includes an audio synthesis module, which is connected to the analog human voice input terminal 21 and the first original sound cancellation signal input terminal 22, respectively, and the signal output terminal of the audio synthesis module is connected to the audio synthesis output terminal 23.

[0043] Specifically, the audio synthesis module is used to synthesize the analog human voice signal and the de-voiced signal into a complete audio.

[0044] The analog vocal signal, such as the real-time singing vocals, enters the audio synthesis module through the analog vocal input terminal 21. At the same time, the original sound signal, such as the accompaniment, enters the same module through the original sound signal input terminal 22. The module combines the two signals into a single audio signal through signal gain adjustment, phase alignment and other processing, and finally transmits it to the audio synthesis output terminal 23 through the module output terminal.

[0045] The integrated audio synthesis module enables the second processing chip 2 to perform signal synthesis functions, ensuring the synchronization and integration of simulated vocals and accompaniment, reducing signal loss during the synthesis process, and improving the sound quality of the output audio.

[0046] Furthermore, it also includes an analog signal transmission link; the analog signal transmission link is connected between the analog voice output terminal and the analog voice input terminal 21, and the analog signal transmission link integrates an analog protocol adapter circuit.

[0047] Furthermore, it also includes a digital signal transmission link; the digital signal transmission link is connected between the digital audio output terminal and the digital audio input terminal 31, and the digital signal transmission link integrates a digital protocol adapter circuit.

[0048] Specifically, analog protocol adapter circuits, such as impedance matching circuits and filtering circuits, are adapted to analog signal transmission protocols such as the PCM analog protocol. Digital protocol adapter circuits, such as SPI and I2S interface circuits, are adapted to digital signal transmission protocols such as AES3 and S / PDIF protocols.

[0049] When analog voice signals are transmitted through an analog transmission link, the analog protocol adapter circuit performs impedance matching and filtering on the signal to reduce noise interference during transmission; when digital audio signals are transmitted through a digital transmission link, the digital protocol adapter circuit converts the signal into an adapted digital format to ensure signal integrity during high-speed transmission.

[0050] The design of dedicated transmission links and adapter circuits ensures that analog and digital signals maintain their respective signal characteristics during transmission, reducing cross-protocol interference and improving transmission stability and signal fidelity.

[0051] Furthermore, the audio synthesis output terminal 23 is connected to at least one of a speaker interface, a headphone interface, and an audio interface.

[0052] Specifically, speaker interfaces such as speaker terminals, headphone interfaces such as 3.5mm headphone jacks, and audio interfaces such as RCA interfaces and XLR interfaces are used to connect different types of external playback devices.

[0053] The synthesized audio signal is transmitted to the output interface group 12 via the audio synthesis output terminal 23 of the second processing chip 2. The corresponding interface is selected to connect to external devices according to actual needs: such as connecting to a speaker for external playback, connecting to headphones for personal listening, or connecting to a professional sound system for stage sound reinforcement.

[0054] The design of multiple output interfaces allows the device to be adapted to playback devices in different scenarios, improving the device's compatibility and flexibility of use, and meeting diverse needs such as home, performance, and professional recording.

[0055] This utility model also provides a karaoke device, including an audio transmission device as described in any of the above embodiments.

[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0060] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0061] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An audio transmission device, characterized in that, It includes a first processing chip, a second processing chip, and a third processing chip; The first processing chip is provided with an input interface group and an output interface group. The input interface group is used to receive audio signals; the output interface group includes an analog human voice output terminal and a digital audio output terminal. The second processing chip has an analog voice input terminal, an original sound cancellation signal input terminal, and an audio synthesis output terminal, wherein the analog voice input terminal and the analog voice output terminal are electrically connected; The third processing chip is provided with a digital audio input terminal, a first original audio signal output terminal and a second original audio signal output terminal. The digital audio input terminal is electrically connected to the digital audio output terminal, the first original audio signal output terminal is electrically connected to the first processing chip, and the second original audio signal output terminal is electrically connected to the original audio signal input terminal. The audio synthesis output terminal is used to connect to an external playback device.

2. The audio transmission device according to claim 1, characterized in that, The input interface group of the first processing chip includes a wireless audio interface, a wired audio interface, and a host computer interface.

3. The audio transmission device according to claim 1, characterized in that, The third processing chip also includes an original sound cancellation processing module. The signal input terminal of the original sound cancellation processing module is connected to the digital audio input terminal, and the signal output terminal of the original sound cancellation processing module is connected to the first original sound cancellation signal output terminal and the second original sound cancellation signal output terminal, respectively.

4. The audio transmission device according to claim 1, characterized in that, The second processing chip also includes an audio synthesis module, which is connected to the analog human voice input terminal and the first original sound signal input terminal, respectively, and the signal output terminal of the audio synthesis module is connected to the audio synthesis output terminal.

5. The audio transmission device according to claim 1, characterized in that, It also includes an analog signal transmission link; the analog signal transmission link is connected between the analog voice output terminal and the analog voice input terminal, and the analog signal transmission link integrates an analog protocol adapter circuit.

6. The audio transmission device according to claim 1, characterized in that, It also includes a digital signal transmission link; the digital signal transmission link is connected between the digital audio output terminal and the digital audio input terminal, and the digital signal transmission link integrates a digital protocol adaptation circuit.

7. The audio transmission device according to claim 1, characterized in that, The audio synthesis output terminal is connected to at least one of a speaker interface, a headphone interface, and an audio interface.

8. A karaoke device, characterized in that, Includes the audio transmission device as described in any one of claims 1-7.

Images