Sound control circuit based on TBE chip

Abstract

The utility model relates to the technical field of sound equipment control, and particularly discloses a sound equipment control circuit based on a TBE chip, which comprises an audio input interface circuit, a sound effect processing master control circuit, an audio conversion circuit, a power amplifier circuit, an audio output circuit and a power supply management circuit, the sound effect processing master control circuit is electrically connected with the audio input interface circuit, the audio conversion circuit and the power management circuit, the audio conversion circuit is electrically connected with the power amplifier circuit, and the power amplifier circuit is electrically connected with the audio output circuit. According to the utility model, the sound effect processing master control circuit is arranged to carry out dynamic equalization, wide dynamic processing and low-frequency enhancement on the input audio signals, and then the audio signals are output after power amplification by the power amplifier circuit, so that the sound quality of the audio signals can be improved, music is clearer, richer and more dynamic, better auditory experience is provided, and the sound quality of the audio signals is improved. The method can be widely applied to various audio devices.

Description

Technical Field

[0001] The utility model relates to the technical field of sound control, in particular to a sound control circuit based on a TBE chip. Background Art

[0002] Car audio systems are designed to alleviate the boredom of travel for drivers and passengers. The earliest examples were AM radios, followed by AM / FM radios and cassette players, and eventually CD players and DCC / DAT compatible digital audio systems. With the rise of off-road vehicles and all-terrain vehicles (ATVs), ATVs are vehicles capable of navigating any terrain, making them difficult for ordinary vehicles to maneuver.

[0003] A search revealed a Chinese utility model patent application with patent number CN202121037308.5, which discloses a control system circuit for a smart speaker. The circuit comprises a microphone input circuit, a recording input circuit, an offline voice processing circuit, an online voice processing circuit, an input selection circuit, and an audio amplifier circuit, all connected in series. A Bluetooth input circuit is connected in parallel with the online voice processing circuit and then connected to the input end of the input selection circuit, and the Bluetooth input circuit is controlled by the offline voice processing circuit. The audio amplifier circuit, the amplifier feedback circuit, and the recording input circuit are connected in reverse series. The online voice processing circuit is bidirectionally connected to the communication control circuit. The online voice processing circuit is connected to a cloud-based signal processing system via a wireless network. This system has the advantages of flexible online and offline operating modes, smooth human-computer interaction, and solves the problem of a single smart speaker controlling multiple hardware devices through voice control without a wireless connection. It also offers multiple functions, significantly reduces energy consumption, and facilitates various social activities.

[0004] Another example is the Chinese utility model patent application number CN202223040221.0, which discloses a high-fidelity car audio control circuit. The control circuit includes a main control module, which includes a microprocessor, an A / D keyboard module, an audio decoding module, and a high-fidelity sound effect control module. The A / D keyboard module, the audio decoding module, and the high-fidelity sound effect control module are electrically connected to the microprocessor respectively. The microprocessor serves as the overall scheduling control unit of each part. After the audio signal is input, it is analyzed by the audio decoding module. The decoded audio signal is further transmitted to the high-fidelity sound effect control module through the microprocessor to control the speaker for playback, further achieving high-fidelity sound quality output, effectively improving the quality of audio output, and greatly enhancing the user experience.

[0005] Although the existing audio control circuit can meet basic usage requirements, each frequency band is produced by an independent unit, and there are timbre and phase differences between the units; the crossover network introduces new distortion to the system, and the sound field, imaging, separation and layering will be more easily affected, and the timbre may deviate. Utility Model Content

[0006] The technical problem to be solved by the present invention is that, in response to the above-mentioned defects of the prior art, an audio control circuit based on a TBE chip is provided. By setting a sound effect processing main control circuit, the input audio signal is dynamically balanced, wide dynamic processing and low-frequency enhancement are performed, and then the power is amplified and output through a power amplifier circuit, the sound quality of the audio signal can be improved, making the music clearer, richer and more dynamic, providing a better listening experience, and can be widely used in various audio devices.

[0007] In order to solve the above technical problems, the technical solution of the utility model is:

[0008] A sound control circuit based on a TBE chip includes an audio input interface circuit, a sound effect processing main control circuit, an audio conversion circuit, a power amplifier circuit, an audio output circuit and a power management circuit. The sound effect processing main control circuit is electrically connected to the audio input interface circuit, the audio conversion circuit and the power management circuit respectively; the audio conversion circuit is electrically connected to the power amplifier circuit; and the power amplifier circuit is electrically connected to the audio output circuit.

[0009] Preferably, the sound effect processing main control circuit includes a sound effect processing chip U1, a crystal oscillator Y1, an antenna ANT1 and a main control peripheral circuit, and the crystal oscillator Y1, the antenna ANT1 and the main control peripheral circuit are all connected to the sound effect processing chip U1.

[0010] Preferably, the audio input interface circuit includes a microphone interface MIC1, an AUX interface EJ1, an SD card interface J1 and a USB interface CN5, and the microphone interface MIC1, the AUX interface EJ1, the SD card interface J1 and the USB interface CN5 are all connected to the sound processing chip U1.

[0011] Preferably, the audio conversion circuit includes a front left channel output circuit, a front right channel output circuit, a left surround output circuit and a right surround output circuit, and the front left channel output circuit, the front right channel output circuit, the left surround output circuit and the right surround output circuit are all connected to the sound processing chip U1.

[0012] Preferably, the power amplifier circuit includes a power amplifier chip U2, a capacitor C30, a capacitor C40, a capacitor C41, a capacitor C42, a capacitor C43 and a resistor R41, and the front left channel output circuit, the front right channel output circuit, the left surround output circuit, the right surround output circuit, the capacitor C30, the capacitor C40, the capacitor C41, the capacitor C42, the capacitor C43 and the resistor R41 are all connected to the power amplifier chip U2.

[0013] Preferably, the audio output circuit includes an audio output interface CN2, the power management circuit includes a power management chip U3, a resistor R1, a capacitor EC6 and a capacitor EC7, the resistor R1, the capacitor EC6 and the capacitor EC7 are all connected to the power management chip U3, and the audio output interface CN2 is respectively connected to the power management chip U3 and the power amplifier chip U2.

[0014] By adopting the above technical solution, the utility model provides a sound control circuit based on a TBE chip, which has the following beneficial effects: the sound effect processing main control circuit in the sound control circuit is electrically connected to the audio input interface circuit, the audio conversion circuit and the power management circuit respectively, the audio conversion circuit is electrically connected to the power amplifier circuit, and the power amplifier circuit is electrically connected to the audio output circuit. The audio input interface circuit inputs the audio signal into the sound effect processing main control circuit, and the sound effect processing main control circuit performs reasonable adjustments based on the dynamic range of the audio signal, making the overall sound of the music more balanced, increasing the dynamic range of the audio signal, making the background sound clearer, and enhancing the low-frequency portion of the music, making the music more powerful and shocking. By providing the sound effect processing main control circuit to dynamically balance, wide dynamic range process and enhance the low frequency portion of the input audio signal, and then amplifying the power of the power amplifier circuit before output, the sound quality of the audio signal can be improved, making the music clearer, richer and more dynamic, providing a better listening experience. The sound effect processing main control circuit can be widely used in various audio devices, such as audio systems and headphones, and has become an indispensable tool for music lovers and professionals pursuing better sound quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0016] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0018] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0019] like Figure 1 As shown, the TBE chip-based audio control circuit includes an audio input interface circuit, an audio effect processing main control circuit, an audio conversion circuit, a power amplifier circuit, an audio output circuit, and a power management circuit. The audio effect processing main control circuit is electrically connected to the audio input interface circuit, the audio conversion circuit, and the power management circuit, respectively. The audio conversion circuit is electrically connected to the power amplifier circuit, and the power amplifier circuit is electrically connected to the audio output circuit. It is understandable that the audio input interface circuit, the audio effect processing main control circuit, the audio conversion circuit, the power amplifier circuit, the audio output circuit, and the power management circuit can all be integrated on a PCB circuit board and installed in the audio system for use.

[0020] Specifically, the sound processing main control circuit includes an audio processing chip U1, a crystal oscillator Y1, an antenna ANT1, and peripheral control circuits, all of which are connected to the sound processing chip U1. The audio input interface circuit includes a microphone interface MIC1, an AUX interface EJ1, an SD card interface J1, and a USB interface CN5, all of which are connected to the sound processing chip U1. It is understood that the sound processing chip U1 can be a general-purpose BBE chip or TBE chip. By applying dynamic equalization, wide dynamic range processing, and low-frequency enhancement to the audio signal, it can make music clearer, fuller, and have a better soundstage. The sound processing chip U1 uses three sound effects technologies: Bass, Beef, and Exciter, for bass enhancement, mid- and high-frequency enhancement, and high-frequency enhancement, respectively. By combining these three technologies, the sound processing chip U1 can address shortcomings that may occur during audio recording and playback, further improving sound quality. First, the sound processing chip U1 utilizes dynamic equalization technology, which adjusts appropriately based on the dynamic range of the audio signal, resulting in a more balanced overall sound and avoiding the problem of certain frequency bands being overly prominent or under-represented. This technology enhances the fidelity and clarity of the music, allowing the human ear to better receive the audio information. Second, the sound processing chip U1 also utilizes wide dynamic range processing technology, which increases the dynamic range of the audio signal, enhancing musical details and richer sound quality. By increasing the dynamic range of the audio signal, background sounds become clearer, vocals become fuller, and the listening experience becomes more comfortable. Furthermore, the sound processing chip U1 utilizes low-frequency enhancement technology, which enhances the low frequencies in music, making them more powerful and impactful. By appropriately adjusting the audio signal's spectrum, this technology boosts the low-frequency energy, giving the bass a deeper, richer texture, and greater impact. In addition to these three key technologies, the sound processing chip U1 also utilizes Exciter technology for high-frequency enhancement. Exciter technology emphasizes the high frequencies of the audio signal, making the music brighter and more transparent. This technology can enhance the details of music, make notes and vocals clearer, and increase the pleasure of music appreciation.

[0021] Specifically, the audio conversion circuit includes a front left channel output circuit, a front right channel output circuit, a left surround output circuit and a right surround output circuit. The front left channel output circuit, the front right channel output circuit, the left surround output circuit and the right surround output circuit are all connected to the sound processing chip U1; the front left channel output circuit includes a resistor R36, a resistor R19, a capacitor C25 and a capacitor C36, one end of the resistor R36 is connected to the 45th pin of the sound processing chip U1, and the other end of the resistor R36 is connected to the 14th pin of the power amplifier chip U2 via the capacitor C25, the front right channel output circuit includes a resistor R38, a resistor R20, a capacitor C27 and a capacitor C37, the left surround output circuit includes a resistor R39, a resistor R21, a capacitor C28 and a capacitor C38, and the right surround output circuit includes a resistor R40, a resistor R22, a capacitor C29 and a capacitor C39. The specific connection method is the same as that of the left channel output circuit, and the present invention will not repeat it again.

[0022] Specifically, the power amplifier circuit includes a power amplifier chip U2, capacitors C30, C40, C41, C42, C43, and a resistor R41. The front left channel output circuit, front right channel output circuit, left surround output circuit, right surround output circuit, capacitors C30, C40, C41, C42, C43, and R41 are all connected to the power amplifier chip U2. The audio output circuit includes an audio output interface CN2. The power management circuit includes a power management chip U3, a resistor R1, a capacitor EC6, and a capacitor EC7. The resistor R1, the capacitor EC6, and the capacitor EC7 are all connected to the power management chip U3. The audio output interface CN2 is respectively connected to the power management chip U3 and the power amplifier chip U2. It can be understood that the power amplifier chip U2 uses a TDA7388 chip, and the power management chip U3 uses a 7805 voltage regulator chip.

[0023] It can be understood that the present invention has a reasonable design and unique structure. By setting up a sound effect processing main control circuit, the input audio signal is dynamically balanced, wide dynamic processing and low-frequency enhancement are performed, and then the power is amplified and output through the power amplifier circuit, which can improve the sound quality of the audio signal, making the music clearer, richer and more dynamic, providing a better listening experience. It can be widely used in various audio equipment, such as audio systems, headphones, etc., and become an indispensable tool for music lovers and professionals in pursuit of better sound quality.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A sound control circuit based on a TBE chip, characterized in that: It includes an audio input interface circuit, a sound effect processing main control circuit, an audio conversion circuit, a power amplifier circuit, an audio output circuit and a power management circuit. The sound effect processing main control circuit is electrically connected to the audio input interface circuit, the audio conversion circuit and the power management circuit respectively, the audio conversion circuit is electrically connected to the power amplifier circuit, and the power amplifier circuit is electrically connected to the audio output circuit.

2. The TBE chip-based audio control circuit according to claim 1, characterized in that: The sound effect processing main control circuit includes a sound effect processing chip U1, a crystal oscillator Y1, an antenna ANT1 and a main control peripheral circuit. The crystal oscillator Y1, the antenna ANT1 and the main control peripheral circuit are all connected to the sound effect processing chip U1.

3. The TBE chip-based audio control circuit according to claim 2, characterized in that: The audio input interface circuit includes a microphone interface MIC1, an AUX interface EJ1, an SD card interface J1 and a USB interface CN5. The microphone interface MIC1, the AUX interface EJ1, the SD card interface J1 and the USB interface CN5 are all connected to the sound processing chip U1.

4. The TBE chip-based audio control circuit according to claim 2, characterized in that: The audio conversion circuit includes a front left channel output circuit, a front right channel output circuit, a left surround output circuit and a right surround output circuit. The front left channel output circuit, the front right channel output circuit, the left surround output circuit and the right surround output circuit are all connected to the sound processing chip U1.

5. The TBE chip-based audio control circuit according to claim 4, characterized in that: The power amplifier circuit includes a power amplifier chip U2, a capacitor C30, a capacitor C40, a capacitor C41, a capacitor C42, a capacitor C43 and a resistor R41. The front left channel output circuit, the front right channel output circuit, the left surround output circuit, the right surround output circuit, the capacitor C30, the capacitor C40, the capacitor C41, the capacitor C42, the capacitor C43 and the resistor R41 are all connected to the power amplifier chip U2.

6. The TBE chip-based audio control circuit according to claim 2, characterized in that: The audio output circuit includes an audio output interface CN2, the power management circuit includes a power management chip U3, a resistor R1, a capacitor EC6 and a capacitor EC7, the resistor R1, the capacitor EC6 and the capacitor EC7 are all connected to the power management chip U3, and the audio output interface CN2 is respectively connected to the power management chip U3 and the power amplifier chip U2.

Images