Multifunctional player integrating digital sound console and sound card

By integrating a digital mixer and a multi-function player with a sound card, it solves the problems of inconvenient use of existing independent products and the inability of sound quality to meet a variety of performance needs, achieving the effects of excellent sound quality, powerful functions, and ease of use.

CN222380287UActive Publication Date: 2025-01-21DONGGUAN LONGJOIN ELECTRONICS
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Patent Information

Application Number
CN202420202718.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-29
Publication Date
2025-01-21
Estimated Expiration
2034-01-29

AI Technical Summary

Technical Problem

Existing mixers and sound cards are usually independent products, which are inconvenient to use and cannot meet the ideal requirements of sound quality and sound, and cannot meet the needs of many types of performance.

Method used

Design a multifunctional player that integrates a digital mixer and a sound card. It uses components such as audio codecs, control processors, and power amplifier ICs to implement analog signal input and output and digital signal processing, and supports multiple audio inputs. Way.

Benefits of technology

It has realized a powerful and easy-to-use multi-function player with excellent tone and sound quality, which can meet various performance needs, is suitable for a wide range of occasions, and has high promotion and application value.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a multifunctional player integrating a digital sound console and a sound card, which comprises an audio codec U9, a control processor and a power amplifier IC, the audio codec U9 is electrically connected with the control processor, the input end of the audio codec U9 is connected with analog input signals, the output end of the audio codec U9 is connected with analog output signals, and the control processor is electrically connected with the power amplifier IC. The analog input signal is connected with a plurality of analog signal sources of the sound console, and the analog output signal is connected with a power amplifier IC and / or an earphone; and the control processor is used for carrying out transmission, MCU control and DSP operation processing on the audio signal. The multifunctional player not only has the function of a sound card, but also can achieve the sound effect of a sound console, is good in timbre and tone quality, small in size, convenient to carry, capable of meeting various performance requirements and wide in application occasion.
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Description

Technical Field

[0001] This patent application belongs to the field of player technology, and more specifically, relates to a multifunctional player integrating a digital mixer and a sound card. Background Art

[0002] In audio processing, mixing console and sound card are both key devices.

[0003] The mixing console is a very important device in a professional audio system. A professional audio system is often centered around a mixing console. A commonly used mixing console can receive 8 to 24 different signals at the same time, and adjust and process these signals in terms of timbre, sound quality and amplitude. Generally speaking, the mixing console is mainly used to amplify program signals, adjust the frequency of various signals (i.e. tuning compensation), merge and artistically process signals, and control signal output as required.

[0004] The basic function of a sound card is to convert the original sound signals from a microphone, tape, or CD, and output them to audio devices such as headphones, speakers, amplifiers, and recorders, or to make musical instruments produce beautiful sounds through the Musical Instrument Digital Interface (MIDI).

[0005] Currently, the mixing consoles and sound cards on the market are almost all independent products that need to be adapted or adjusted when used. Not only are they large in size and inconvenient to use, but the sound quality and timbre also fail to meet ideal requirements and cannot satisfy various types of performances.

[0006] In the past two years, with the rapid development of industries such as anchors and live broadcasts, anchors have higher and higher requirements for the tone of sound cards. Therefore, embedding the sound card into the mixing console can meet various performance needs. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a multifunctional player which integrates a digital mixer and a sound card, has the characteristics of being easy to use and having good timbre and sound quality, and can meet various performance needs.

[0008] In order to solve the above problems, the technical solution adopted by the utility model is:

[0009] A multifunctional player integrating a digital mixer and a sound card, comprising an audio codec U9, a control processor, and an amplifier IC, wherein the audio codec U9 is electrically connected to the control processor, an input end of the audio codec U9 is connected to an analog input signal, and an output end is connected to an analog output signal, the analog input signal is connected to a plurality of analog signal sources (microphones, guitars, microphones), and the analog output signal is connected to the amplifier IC and / or headphones;

[0010] The control processor is used for transmitting, micro-controlling and DSP processing of audio signals. The control processor is an XMOS microcontroller, which includes a matching XMOS transmission processor, MCU and DSP processor.

[0011] like Figure 2 , audio codec U9 is PCM3168APAP, audio codec U9 includes U9A and U9B;

[0012] U9A is used for analog signal input and output. The voltage input pin (VIN pin) of U9A is connected to the analog input signal (Mic Preamp & Line IN), and the analog input pin (AIN pin) of U9A is connected to the analog output signal (headphone output).

[0013] U9B is used for the input and output of digital signals. Pins 6-8 of U9B (LRCKAD pin, BCKAD pin, DOUT1 pin) are electrically connected to the XMOS transmission processor and serve as digital input signals. Pins 42 and 43 of U9B are electrically connected to the MCU of the control processor so that the DSP operation processor of the control processor can perform sound processing and return the above digital input signals. Pins 35-37 of U9B (LRCKDA pin, BCKDA pin, DIN1 pin) are electrically connected to the XMOS transmission processor and serve as digital output signals.

[0014] Furthermore, the power amplifier IC is a differential input power amplifier.

[0015] Further, the model of the XMOS microcontroller is XU216-512-TQ128-C20, and the power amplifier IC is HT97220SQE.

[0016] Further, if Figure 3 , the LIN-pin (L channel negative input) of the power amplifier IC is connected to capacitor C375 and resistor R419 respectively, the other end of capacitor C375 is connected to LOUT pin of the power amplifier IC and resistor R418 respectively, the other end of resistor R418 is connected to the other end of resistor R419, resistor R416 and capacitor C377 respectively, the other end of resistor R416 is connected to audio codec U9 through polarity capacitor EC37;

[0017] The other end of capacitor C377 is connected to resistor R420, resistor R421, and resistor R422 respectively. The other end of resistor R420 is connected to audio codec U9 through polar capacitor EC38; the other end of resistor R421 is connected to LIN+ pin (L channel positive input) of power amplifier IC and capacitor C381, the other end of resistor R422 is connected to GND, resistor R423, the other end of capacitor C381, and capacitor C384, the other end of resistor R423 is connected to resistor R424, resistor R425, and capacitor C388, and the other end of resistor R424 is connected to audio codec U9 through polar capacitor EC39; the other end of resistor R425 is connected to the other end of capacitor C384 and RIN+ pin (R channel positive input) of power amplifier IC;

[0018] The other end of capacitor C388 is connected to audio codec U9 through resistor R429 and polar capacitor EC40 in sequence. The other end of capacitor C388 is also connected to resistor R426 and resistor R428. The other end of resistor R426 is connected to RIN-pin (R channel negative input) of power amplifier IC and capacitor C387. The other end of capacitor C387 and the other end of resistor R428 are both connected to ROUT pin of power amplifier IC.

[0019] The PVDD, SVDD, PVSS and BIAS pins of the power amplifier IC are all connected to GND; the LOUT pin (L channel output) of the power amplifier IC is also connected to the 9th and 10th pins of the stereo component P9A through resistor B80, and the ROUT pin (R channel output) of the power amplifier IC is also connected to the 5th and 6th pins of the stereo component P9A through resistor B81.

[0020] Furthermore, the stereo element P9A is TRS STEREO 6.35mm.

[0021] Furthermore, the output power of the power amplifier IC is 125mW and the SNR is 112dB.

[0022] Furthermore, the supported audio input methods include but are not limited to one or more of TF card, USB, Bluetooth, optical fiber, earbud 6.35mmTRS plug, 3.5mmTRS, and XLR cannon head.

[0023] Furthermore, THD+N≦0.1%, SNR≧90dB.

[0024] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are:

[0025] 1. This product is powerful. It not only has the function of a sound card, but also can achieve the sound effect of a mixing console. It has good timbre and quality, can meet various performance needs, and is suitable for a wide range of occasions.

[0026] 2. The mixer uses a digital mixer, which is compact and easy to carry.

[0027] 3. Support TF card, USB, Bluetooth, 6.35mmTRS, 3.5mmTRS, XLR, optical fiber and other audio input methods, which is more convenient to use and has no risk of audio input.

[0028] 4. It has powerful functions and extremely high promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural block diagram of the utility model;

[0030] Figure 2 This is a circuit connection diagram of the audio codec U9 in the utility model;

[0031] Figure 3 This is a circuit connection diagram of the power amplifier IC in the utility model;

[0032] Figure 4 The utility model is a peripheral circuit of the mixer microphone Figure 1 ;

[0033] Figure 5 The utility model is a peripheral circuit of the mixer microphone Figure 2 ;

[0034] Figure 6 The peripheral circuit of the power amplifier IC in the utility model Figure 1 ;

[0035] Figure 7 The peripheral circuit of the power amplifier IC in the utility model Figure 2 . DETAILED DESCRIPTION

[0036] The utility model is further described in detail below in conjunction with the embodiments.

[0037] A multifunctional player integrating a digital mixer and a sound card, such as Figure 1 , including an audio codec U9, a control processor, and a power amplifier IC. The audio codec U9 is electrically connected to the control processor. The input end of the audio codec U9 is connected to an analog input signal, and the output end is connected to an analog output signal. The analog input signal is connected to multiple analog signal sources of a mixing console, and the analog output signal is connected to a power amplifier IC and / or headphones; the analog signal sources include but are not limited to microphones, guitars, microphones, and headphone sockets for mobile phones.

[0038] The control processor is used for transmitting, micro-controlling and DSP operation processing of audio signals. The control processor is an XMOS microcontroller. In terms of structural composition, the XMOS microcontroller includes a matching XMOS transmission processor, MCU, and DSP operation processor.

[0039] The audio codec U9 uses the TI brand PCM3168APAP codec for ADC / DAC audio signal conversion.

[0040] TI's PCM3168APAP has 6-channel ADC and 8-channel DAC signal conversion functions. The 6 sets of analog input signals are converted into digital signals through PCM3168APAP. After the digital signals are processed by MCU, they are returned to this Codec, which converts the 8 sets of processed digital signals into analog signals for output.

[0041] Specifically, Figure 2 The audio codec U9 includes U9A and U9B. U9A is used for the input and output of analog signals. The voltage input pin (VIN pin) of U9A is connected to the analog input signal (Mic Preamp&Line IN), and the analog input pin (AIN pin) of U9A is connected to the analog output signal (headphone output).

[0042] U9B is used for the input and output of digital signals. Pins 6-8 of U9B (LRCKAD pin, BCKAD pin, DOUT1 pin) are electrically connected to the XMOS transmission processor and serve as digital input signals. Pins 42 and 43 of U9B are electrically connected to the MCU of the control processor so that the DSP operation processor of the control processor can perform sound processing and return the above digital input signals. Pins 35-37 of U9B (LRCKDA pin, BCKDA pin, DIN1 pin) are electrically connected to the XMOS transmission processor and serve as digital output signals.

[0043] The power amplifier IC is a differential input power amplifier. Specifically, the high-fidelity stereo power amplifier IC HT97220SQE is used. Its excellent THD+N and SNR meet the design requirements. The HT97220SQE high-fidelity stereo power amplifier IC produced by HEROIC is used. It adopts differential input and provides excellent THD+N in the entire audio frequency band. The output power can reach 125mW (fIN=1KHZ, VDD=5V, RL=32Ω, THD+N=0.1%), and the SNR can reach 112dB. After the digital signal is processed by the codec PCM3168APAP, it is processed by the MCU, the sound effect is added, and then converted into an analog signal, and then output after being amplified by the HT97220SQE high-fidelity.

[0044] Circuit connection, such as Figure 3The LIN-pin (L channel negative input) of the power amplifier IC is respectively connected to capacitor C375 and resistor R419. The other end of capacitor C375 is respectively connected to the LOUT pin of the power amplifier IC and resistor R418. The other end of resistor R418 is respectively connected to the other end of resistor R419, resistor R416, and capacitor C377. The other end of resistor R416 is connected to the audio codec U9 through polarity capacitor EC37.

[0045] The other end of capacitor C377 is connected to resistor R420, resistor R421, and resistor R422 respectively. The other end of resistor R420 is connected to the audio codec U9 through polarity capacitor EC38; the other end of resistor R421 is connected to the LIN+ pin (L channel positive input) of the power amplifier IC and capacitor C381, the other end of resistor R422 is connected to GND, resistor R423, the other end of capacitor C381, and capacitor C384, the other end of resistor R423 is connected to resistor R424, resistor R425, and capacitor C388, and the other end of resistor R424 is connected to the audio codec U9 through polarity capacitor EC39; the other end of resistor R425 is connected to the other end of capacitor C384 and the RIN+ pin (R channel positive input) of the power amplifier IC.

[0046] The other end of capacitor C388 is connected to the audio codec U9 through resistor R429 and polarity capacitor EC40 in sequence. The other end of capacitor C388 is also connected to resistors R426 and R428. The other end of resistor R426 is connected to the RIN-pin (R channel negative input) of the power amplifier IC and capacitor C387. The other end of capacitor C387 and the other end of resistor R428 are both connected to the ROUT pin of the power amplifier IC.

[0047] The PVDD, SVDD, PVSS and BIAS pins of the power amplifier IC are all connected to GND; the LOUT pin (L channel output) of the power amplifier IC is also connected to the 9th and 10th pins of the stereo component P9A through resistor B80, and the ROUT pin (R channel output) of the power amplifier IC is also connected to the 5th and 6th pins of the stereo component P9A through resistor B81. The stereo component P9A is TRS STEREO 6.35mm. The output power of the power amplifier IC is 125mW, and the SNR is 112dB. The peripheral circuits of the power amplifier IC are as follows Figure 6 (master left output), Figure 7 Taking the mixer microphone as an example, the peripheral circuit of the microphone is as follows: Figure 4 (Mic inputLeft), Figure 5 (Mic input Right).

[0048] Control processor, such as Figure 1As shown in the figure, the XMOS brand core processor XU216-512-TQ128-C20 is used for audio signal transmission, MCU control and DSP operation processing. XU216-512-TQ128-C20 has 81 IO ports, adopts microphone array solution to realize multi-channel microphone channel acquisition and microphone array algorithm processing, supports USB, TMD, I2S to transmit ADC / DAC audio signals to CPU, and can realize far-field sound pickup, voice positioning, echo cancellation and interruption effects.

[0049] Figure 2 There is a message "From XMOS" in the lower left corner. The XMOS here specifically refers to XU216-512-TQ128-C20. As a microcontroller, XMOS has signal control and DSP computing processing capabilities.

[0050] The audio input methods supported in this patent include but are not limited to one or more of TF card, USB, Bluetooth, optical fiber, earplug 6.35mmTRS plug, 3.5mmTRS, XLR cannon head, and the technical level achieved by this multi-function player is as follows:

[0051] 20Hz-20kHz frequency response;

[0052] MIC / XLR balanced input port: THD+N≦0.1%, SNR≧90dB;

[0053] 6.35mm microphone LINE unbalanced input port: THD+N≦0.1%, SNR≧90dB;

[0054] 3.5mm headphone input port: THD+N≦0.1%, SNR≧90dB;

[0055] Bluetooth input port: THD+N≦0.1%, SNR≧90dB;

[0056] TF card / USB input port: THD+N≦0.1%, SNR≧90dB;

[0057] Optical fiber input port: THD+N≦0.1%, SNR≧90dB;

[0058] The size is compact, with specifications within 320*200*100mm.

[0059] The use process of this multifunctional player can be briefly described as follows: analog signals such as microphones and guitars are converted into digital signals through the audio codec PCM3168APAP, and then transmitted to the control processor XU216-512-TQ128-C20 for sound effect processing. Input signals such as USB, optical fiber and Bluetooth are directly processed by the control processor XU216-512-TQ128-C20 for sound effect processing, and the processed sound effects are then transmitted through the audio codec PCM3168APAP. The audio decoder and control processor realize the function of a digital mixer, and the control processor XU216-512-TQ128-C20 and the power amplifier IC HT97220SQE realize the function of a sound card.

Claims

1. A multifunctional player integrating a digital mixer and a sound card, characterized in that: It includes an audio codec U9, a control processor, and a power amplifier IC. The audio codec U9 is electrically connected to the control processor. The input end of the audio codec U9 is connected to an analog input signal, and the output end is connected to an analog output signal. The analog input signal is connected to multiple analog signal sources, and the analog output signal is connected to the power amplifier IC and / or headphones. The control processor is used for transmitting, micro-controlling and DSP processing of audio signals, and the control processor is an XMOS microcontroller; The audio codec U9 is PCM3168APAP, and the audio codec U9 includes U9A and U9B; U9A is used for input and output of analog signals. The voltage input pin of U9A is connected to the analog input signal, and the analog input pin of U9A is connected to the analog output signal; U9B is used for the input and output of digital signals. Pins 6-8 of U9B are electrically connected to the XMOS transmission processor and serve as digital input signals. Pins 42 and 43 of U9B are electrically connected to the MCU of the control processor to perform audio processing and return the above digital input signals. Pins 35-37 of U9B are electrically connected to the XMOS transmission processor and serve as digital output signals.

2. A multifunctional player integrating a digital mixer and a sound card according to claim 1, characterized in that: The power amplifier IC is a differential input power amplifier.

3. A multifunctional player integrating a digital mixer and a sound card according to claim 2, characterized in that: The model of XMOS microcontroller is XU216-512-TQ128-C20, and the power amplifier IC is HT97220SQE.

4. The multifunctional player integrating a digital mixer and a sound card according to claim 3, characterized in that: The LIN-pin of the power amplifier IC is connected to capacitor C375 and resistor R419 respectively. The other end of capacitor C375 is connected to LOUT pin of the power amplifier IC and resistor R418 respectively. The other end of resistor R418 is connected to the other end of resistor R419, resistor R416 and capacitor C377 respectively. The other end of resistor R416 is connected to audio codec U9 through polar capacitor EC37. The other end of capacitor C377 is connected to resistor R420, resistor R421, and resistor R422 respectively. The other end of resistor R420 is connected to audio codec U9 through polar capacitor EC38; the other end of resistor R421 is connected to LIN+ pin of power amplifier IC and capacitor C381, the other end of resistor R422 is connected to GND, resistor R423, the other end of capacitor C381, and capacitor C384, the other end of resistor R423 is connected to resistor R424, resistor R425, and capacitor C388, and the other end of resistor R424 is connected to audio codec U9 through polar capacitor EC39; the other end of resistor R425 is connected to the other end of capacitor C384 and RIN+ pin of power amplifier IC; The other end of capacitor C388 is connected to audio codec U9 through resistor R429 and polar capacitor EC40 in sequence. The other end of capacitor C388 is also connected to resistor R426 and resistor R428. The other end of resistor R426 is connected to RIN-pin of power amplifier IC and capacitor C387. The other end of capacitor C387 and the other end of resistor R428 are both connected to ROUT pin of power amplifier IC. The PVDD pin, SVDD pin, PVSS pin, and BIAS pin of the power amplifier IC are all connected to GND; the LOUT pin of the power amplifier IC is also connected to the 9th and 10th pins of the stereo component P9A through a resistor B80, and the ROUT pin of the power amplifier IC is also connected to the 5th and 6th pins of the stereo component P9A through a resistor B81.

5. A multifunctional player integrating a digital mixer and a sound card according to claim 4, characterized in that: The stereo element P9A is TRS STEREO 6.35mm.

6. The multifunctional player integrating a digital mixer and a sound card according to claim 4, characterized in that: The output power of the power amplifier IC is 125mW and the SNR is 112dB.

7. A multifunctional player integrating a digital mixer and a sound card according to any one of claims 1 to 6, characterized in that: The supported audio input methods include but are not limited to TF card, USB, Bluetooth, optical fiber, earbud 6.35mmTRS plug, 3.5mmTRS, XLR cannon head or one or more.

8. The multifunctional player integrating a digital mixer and a sound card according to claim 7, characterized in that: THD+N≦0.1%, SNR≧90dB.