Intelligent voice gateway

Abstract

The utility model belongs to the field of Bluetooth, and relates to an intelligent voice gateway, which comprises a Bluetooth dual-mode intelligent voice Internet of Things chip, a Bluetooth chip, a power amplifier circuit, a USB interface circuit, a USB to serial port circuit, a low-dropout linear voltage stabilizing circuit, a dimming circuit and a color matching circuit, the Bluetooth chip and the power amplifier circuit are both connected with the Bluetooth dual-mode intelligent voice internet-of-things chip, the Bluetooth chip is further connected with the low-dropout linear voltage stabilizing circuit, the USB to serial port circuit, the dimming circuit and the color adjusting circuit, and the USB interface circuit is further connected with the USB to serial port circuit, the low-dropout linear voltage stabilizing circuit and the power amplifier circuit. Deep fusion of voice control and the Internet of Things technology is realized, the intelligent level of equipment is improved, and the boundary of an application scene is widened; the stability and the high efficiency of audio transmission are ensured, and clear and smooth voice interaction experience is provided for the user; stable power supply of each circuit module is effectively guaranteed, and the overall stability and reliability of the system are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bluetooth technology more specifically, relate to a kind of intelligent voice gateway. BACKGROUND

[0002] Gateway (Gateway) is a kind of complex network interconnection equipment, also called inter-network connector or protocol converter, mainly realizes network interconnection above network layer, for eliminating the difference between different protocol net segment. Gateway can complete protocol conversion, data format conversion and security control and other functions, ensure the smooth communication between different networks.

[0003] The existing gateway, intelligent function aspect is seriously deficient, greatly influence the user's use experience. INVENTION CONTENTS

[0004] In view of the above-mentioned defects of prior art, the utility model provides a kind of intelligent voice gateway, comprising:

[0005] Bluetooth dual-mode intelligent voice internet of things chip, bluetooth chip, power amplifier circuit, USB interface circuit, USB-serial port conversion circuit, low dropout linear regulator circuit, dimming circuit, toning circuit;The bluetooth chip and the power amplifier circuit are connected with the bluetooth dual-mode intelligent voice internet of things chip, the bluetooth chip is also connected with the low dropout linear regulator circuit, the USB-serial port conversion circuit, the dimming circuit and the toning circuit respectively, and the USB interface circuit is also connected with the USB-serial port conversion circuit, the low dropout linear regulator circuit and the power amplifier circuit respectively.

[0006] Preferably, the bluetooth dual-mode intelligent voice internet of things chip includes: US665P31.

[0007] Preferably, the bluetooth chip includes: TG7120B.

[0008] Preferably, the power amplifier circuit includes: the pin 1 of audio power amplifier chip U1 is connected with the one end of resistance R1 and the one end of resistance R2 respectively, the pin 2 of audio power amplifier chip U1 is connected with the pin 3 of audio power amplifier chip U1 and the one end of capacitor C3 respectively, the pin 4 of audio power amplifier chip U1 is connected with the one end of resistance R4 and the one end of resistance R5 respectively, the other end of resistance R4 is connected with the one end of capacitor C4, the pin 5 of audio power amplifier chip U1 is connected with the other end of resistance R5, and the pin 6 of audio power amplifier chip U1 is connected with the one end of capacitor C5 and the one end of capacitor C6 respectively.

[0009] Preferably, the USB interface circuit comprises: one end of the pin 2 of the USB interface chip J3 is connected with one end of the voltage stabilizing diode D1; and one end of the pin 3 of the USB interface chip J3 is connected with one end of the voltage stabilizing diode D2.

[0010] Preferably, the USB-to-serial port circuit comprises: one end of the pin 2 of the USB-to-serial port chip U6 is connected with one end of the resistor R9; one end of the pin 3 of the USB-to-serial port chip U6 is connected with one end of the resistor R8; one end of the pin 4 of the USB-to-serial port chip U6 is connected with one end of the capacitor C25; one end of the pin 5 of the USB-to-serial port chip U6 is connected with one end of the resistor R11; one end of the pin 6 of the USB-to-serial port chip U6 is connected with one end of the resistor R12; and one end of the pin 16 of the USB-to-serial port chip U6 is connected with one end of the capacitor C26.

[0011] Preferably, the low-dropout linear voltage stabilizing circuit comprises: one end of the pin 1 of the low-dropout linear voltage stabilizing chip U5 is connected with one end of the capacitor C21, one end of the capacitor C22 and one end of the resistor R10 respectively; one end of the pin 3 of the low-dropout linear voltage stabilizing chip U5 is connected with the other end of the resistor R10; and one end of the pin 5 of the low-dropout linear voltage stabilizing chip U5 is connected with one end of the capacitor C23 and one end of the capacitor C24 respectively.

[0012] Preferably, the dimming circuit comprises: one end of the resistor R15 is connected with one end of the resistor R16 and one end of the resistor R17 respectively; the other end of the resistor R15 is connected with the pin 5 of the diode D4; the other end of the resistor R16 is connected with the pin 3 of the diode D4; the other end of the resistor R17 is connected with the pin 1 of the diode D4; the pin 6 of the diode D4 is connected with the drain of the MOS tube Q2; the gate of the MOS tube Q2 is connected with one end of the resistor R20 and one end of the resistor R25 respectively; the pin 4 of the diode D4 is connected with the drain of the MOS tube Q3; the gate of the MOS tube Q3 is connected with one end of the resistor R21 and one end of the resistor R26 respectively; the pin 2 of the diode D4 is connected with the drain of the MOS tube Q4; and the gate of the MOS tube Q4 is connected with one end of the resistor R22 and one end of the resistor R27 respectively.

[0013] Preferably, the color adjusting circuit comprises: one end of the resistor R18 is connected with one end of the resistor R19; the other end of the resistor R18 is connected with the anode of the diode D5; the cathode of the diode D5 is connected with the drain of the MOS tube Q5; the gate of the MOS tube Q5 is connected with one end of the resistor R23 and one end of the resistor R28 respectively; the other end of the resistor R19 is connected with the anode of the diode D6; the cathode of the diode D6 is connected with the drain of the MOS tube Q6; and the gate of the MOS tube Q6 is connected with one end of the resistor R24 and one end of the resistor R29 respectively.

[0014] Preferably, the intelligent voice gateway further comprises: a microphone interface connector.

[0015] The intelligent voice gateway has the following beneficial effects: through the Bluetooth dual-mode intelligent voice Internet of Things chip, the depth fusion of voice control and Internet of Things technology is realized, not only the intelligent level of the equipment is improved, but also the boundary of the application scene is widened;

[0016] The close cooperation of the Bluetooth chip and the power amplifier circuit ensures the stability and efficiency of audio transmission, and provides the user with clear and smooth voice interaction experience;

[0017] The introduction of the low-dropout linear voltage stabilizing circuit effectively guarantees the stable power supply of each circuit module, and improves the overall stability and reliability of the system;

[0018] The design of the USB interface circuit and the USB-to-serial port circuit provides the user with convenient data transmission and debugging interface, and further enhances the ease of use and expandability of the equipment;

[0019] The ingenious fusion of the dimming circuit and the color adjusting circuit makes the intelligent voice gateway have great application potential in the field of smart home, and the user can easily adjust the light brightness and color through voice instructions, and create a more comfortable and personalized home environment. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structure shown in these drawings without creative labor. The present application will be further described below in combination with the drawings and embodiments, and the drawings are as follows:

[0021] Figure 1 is an embodiment module structure schematic diagram of the intelligent voice gateway of the present application;

[0022] Figure 2 is a power amplifier circuit circuit diagram in the intelligent voice gateway of the present application;

[0023] Figure 3 is a USB interface circuit circuit diagram in the intelligent voice gateway of the present application;

[0024] Figure 4 is a USB-to-serial port circuit circuit diagram in the intelligent voice gateway of the present application;

[0025] Figure 5 is a low-dropout linear voltage stabilizing circuit circuit diagram in the intelligent voice gateway of the present application;

[0026] Figure 6It is the light adjusting circuit circuit diagram in the intelligent voice gateway of the utility model;

[0027] Figure 7 It is the color adjusting circuit circuit diagram in the intelligent voice gateway of the utility model. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0030] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0031] Please refer to Figure 1 It is an embodiment module structure schematic view of the intelligent voice gateway of the utility model. As Figure 1 As shown in the intelligent voice gateway provided by the first embodiment of the utility model, at least includes, Bluetooth dual-mode intelligent voice Internet of Things chip, Bluetooth chip, power amplifier circuit, USB interface circuit, USB-to-serial port circuit, low dropout linear regulator circuit, light adjusting circuit, color adjusting circuit; the Bluetooth chip and the power amplifier circuit are connected with the Bluetooth dual-mode intelligent voice Internet of Things chip, the Bluetooth chip is also connected with the low dropout linear regulator circuit, USB-to-serial port circuit, light adjusting circuit and color adjusting circuit respectively, and the USB interface circuit is also connected with the USB-to-serial port circuit, low dropout linear regulator circuit and power amplifier circuit respectively.

[0032] In implementation, the Bluetooth dual-mode smart voice Internet of Things chip can include, but is not limited to, US665P31. The US665P31 chip integrates a 32-bit CPU processor and contains various peripheral interfaces such as UART, GPIO, SPI, SD card, I 2C, ADC, and TouchSensor, as well as a built-in NPU and floating-point operation unit. This makes the US665P31 perform well in handling complex voice tasks.

[0033] In terms of voice recognition, the US665P31 supports single-mic Chinese voice recognition and can recognize 50 offline command words. Under 50 dB background noise, the voice recognition rate of the chip can reach 93%, and the recognition distance can reach 5 meters. In addition, its false wake-up rate is also very low, within 36 hours / 1 time.

[0034] As a chip designed specifically for the Internet of Things (I oT) market, the US665P31 also has rich feature functions. It supports BLE function and can connect and control with WeChat applet, APP, etc. At the same time, the chip also supports BT audio playback, Bluetooth phone, and music rhythm, etc. functions, providing users with a more rich use experience.

[0035] In addition, the US665P31 also has excellent power consumption performance, making it very suitable for I oT devices that need to run for a long time and have high requirements for power consumption. Its offline voice recognition function also makes the device still be able to perform voice interaction without network connection, greatly improving the practicality and user experience of the device.

[0036] The US665P31 is a powerful and high-performance Bluetooth dual-mode smart voice I oT chip, providing strong support for the intelligentization and voice interaction of I oT devices.

[0037] The Bluetooth chip includes, but is not limited to, TG7120B, etc. TG7120B is a chip based on Bluetooth 5.0, with a built-in Pingtouge Xuantie CPU, integrating E-Fuse, UART, SPI, I 2C, PWM, etc. on-chip peripherals, and equipped with 512KB F lash and 64KB SRAM on-chip storage space. These features enable the TG7120B to support Tmall Genius Mesh access protocol, providing users with a convenient and intelligent access method. In addition, TG7120B also has excellent radio frequency performance, including a reception sensitivity of -95 dBm and a maximum transmission power of 8 dBm, ensuring the stability and reliability of data transmission.

[0038] The simple circuit design and single-point antenna design of the TG7120B make it easy to produce and integrate, reducing development costs.Meanwhile, the TG7120B supports Bluetooth 5.0 with low power consumption, helping to extend the battery life of the device and reduce energy consumption.In addition, the rich on-chip resources and flexible configuration options of the TG7120B provide users with a wide range of application space, suitable for various small household appliance intelligentization scenarios.More importantly, through the TG7120B, users can quickly and conveniently access the Tmall Genius ecosystem and enjoy the convenience and comfort of intelligentization.

[0039] Figure 2 is the power amplifier circuit in the intelligent voice gateway of the utility model. Figure 2 As shown in the drawing, the power amplifier circuit comprises: one end of a resistor R1 and one end of a resistor R2 are connected to a pin 1 of an audio power amplifier chip U1, a pin 2 of the audio power amplifier chip U1 is connected to a pin 3 of the audio power amplifier chip U1 and one end of a capacitor C3, one end of a resistor R4 and one end of a resistor R5 are connected to a pin 4 of the audio power amplifier chip U1, the other end of the resistor R4 is connected to one end of a capacitor C4, a pin 5 of the audio power amplifier chip U1 is connected to the other end of the resistor R5, and one end of a capacitor C5 and one end of a capacitor C6 are connected to a pin 6 of the audio power amplifier chip U1.

[0040] The audio power amplifier chip U1 includes but is not limited to XA8002D and the like.XA8002D belongs to a single-channel AB class design, which can provide stable power output under different load conditions, especially when the load is 2Ω, it can continuously provide 4.2W of power.This power output capability makes it very suitable for use in portable systems with large volume and small size.At the same time, XA8002D adopts a low-noise pulse width modulation architecture, which not only reduces the number of external components, reduces the consumption of the circuit board area and the cost of the system, but also further simplifies the design process.

[0041] XA8002D performs excellently in performance.Its efficiency is as high as 75%, has no interference to FM, and has excellent sound quality.In addition, the chip has a wide operating voltage range, which can normally work from 2.5V to 6V, which provides good adaptability in various different power supply environments.At the same time, XA8002D also has excellent pop sound suppression function when power is off, without the need for driving output coupling capacitor, bootstrap capacitor and buffer network, further simplifying the circuit design.

[0042] In terms of protection mechanism, XA8002D has an automatic shutdown protection mechanism when the temperature of the chip is too high, which can automatically cut off the output to prevent damage to the chip.In addition, the chip also has overcurrent and undervoltage protection functions, further improving its reliability and stability.

[0043] The XA8002D chip adopts an ESOP8 package form, which is particularly suitable for a low-power, small-size portable system.

[0044] Figure 3 The USB interface circuit in the intelligent voice gateway is shown in Figure 1. Figure 3 The USB interface circuit in the intelligent voice gateway is shown in Figure 1.

[0045] Figure 4 The USB interface circuit in the intelligent voice gateway is shown in Figure 1. Figure 4 The USB interface circuit in the intelligent voice gateway is shown in Figure 1.

[0046] Figure 5 The low-dropout linear voltage stabilizing circuit in the intelligent voice gateway is shown in Figure 1. Figure 5As shown in the figure, the low dropout linear voltage stabilizing circuit comprises: one end of the capacitor C21, one end of the capacitor C22 and one end of the resistor R10 are connected with the pin 1 of the low dropout linear voltage stabilizing chip U5, the other end of the resistor R10 is connected with the pin 3 of the low dropout linear voltage stabilizing chip U5, one end of the capacitor C23 and one end of the capacitor C24 are connected with the pin 5 of the low dropout linear voltage stabilizing chip U5. The low dropout linear voltage stabilizing circuit can keep the output voltage stable when the voltage difference between the input voltage and the output voltage is small, thereby ensuring the stable operation of the circuit under various working conditions; the characteristics of low power consumption and high efficiency help to reduce energy loss and improve energy utilization; the anti-noise interference ability and stability are strong, and excellent performance can be maintained in a complex electromagnetic environment; the LDO also has the advantages of small size and easy integration, and can adapt to the dual demands of miniaturization and high performance of modern electronic equipment.

[0047] Figure 6 is the light adjusting circuit circuit diagram in the intelligent voice gateway of the utility model. As shown in the figure, Figure 6 The light adjusting circuit comprises: one end of the resistor R15 is connected with one end of the resistor R16 and one end of the resistor R17, the other end of the resistor R15 is connected with the pin 5 of the diode D4, the other end of the resistor R16 is connected with the pin 3 of the diode D4, the other end of the resistor R17 is connected with the pin 1 of the diode D4, the pin 6 of the diode D4 is connected with the drain of the MOS tube Q2, the gate of the MOS tube Q2 is connected with one end of the resistor R20 and one end of the resistor R25, the pin 4 of the diode D4 is connected with the drain of the MOS tube Q3, the gate of the MOS tube Q3 is connected with one end of the resistor R21 and one end of the resistor R26, the pin 2 of the diode D4 is connected with the drain of the MOS tube Q4, and the gate of the MOS tube Q4 is connected with one end of the resistor R22 and one end of the resistor R27.

[0048] The light adjusting circuit adjusts the light based on the three primary colors of red, green and blue, and the main benefits are color richness and precise control. The light adjusting circuit can generate almost any color of light by adjusting the brightness ratio of the three primary colors, meeting the diversified color needs. At the same time, the circuit can realize high light adjusting precision, making the light brightness change more smooth and continuous, and improving the visual experience. In addition, the light adjusting circuit also has the characteristics of high efficiency and energy saving, which can effectively reduce the energy consumption through constant current source control, realizing green lighting.

[0049] Figure 7 is the color adjusting circuit circuit diagram in the intelligent voice gateway of the utility model. As shown in the figure, Figure 7As shown, the toning circuit comprises: one end of resistor R18 is connected with one end of resistor R19, the other end of resistor R18 is connected with the positive electrode of diode D5, the negative electrode of diode D5 is connected with the drain of MOS tube Q5, the gate of MOS tube Q5 is connected with one end of resistor R23 and one end of resistor R28 respectively, the other end of resistor R19 is connected with the positive electrode of diode D6, the negative electrode of diode D6 is connected with the drain of MOS tube Q6, the gate of MOS tube Q6 is connected with one end of resistor R24 and one end of resistor R29 respectively.The light modulation circuit adopts two PWM signals, wherein CW controls cold light (high color temperature), and WW controls warm light (low color temperature), so that the mixed control of brightness and color temperature is realized.The advantages are high efficiency, good constant current characteristic, high linearity, and wide adjustable range of output voltage.Through accurately adjusting the duty cycle of the two PWM signals, the color temperature can be adjusted under the condition of constant brightness, or the brightness can be adjusted under the condition of constant color temperature, so that more rich lighting experience is provided for users.In addition, the light modulation circuit also has the advantages of low cost, no EMI problem, simple PCB layout and the like.

[0050] In specific implementation, the intelligent voice gateway further comprises a microphone interface connector, which can realize high-quality audio input and output, and provide clear and stable voice communication experience for users.

[0051] The working principle of the utility model is:

[0052] The US665P31 chip collects user wake-up and control instructions through the MIC, drives the loudspeaker to broadcast device control instructions through the audio power amplifier, and sends voice control instructions to the TG7120B Bluetooth chip through the serial port.

[0053] The utility model has the advantages that:

[0054] Through the Bluetooth dual-mode intelligent voice Internet of Things chip, the deep integration of voice control and Internet of Things technology is realized, which not only improves the intelligent level of the device, but also widens the boundary of the application scenario.

[0055] The close cooperation of the Bluetooth chip and the power amplifier circuit ensures the stability and efficiency of audio transmission, providing users with a clear and smooth voice interaction experience.

[0056] The introduction of the low-dropout linear voltage regulator effectively ensures the stable power supply of each circuit module, improving the overall stability and reliability of the system.

[0057] The design of the USB interface circuit and the USB-to-serial port circuit provides users with a convenient data transmission and debugging interface, further enhancing the ease of use and expandability of the device.

[0058] The ingenious integration of the dimming circuit and the color adjustment circuit makes the intelligent voice gateway have great application potential in the field of smart home, and users can easily adjust the brightness and color of the light through voice commands, creating a more comfortable and personalized home environment.

[0059] The utility model is described according to specific embodiments, but those skilled in the art should understand that various changes and equivalent replacements can be made without departing from the scope of the utility model. In addition, to adapt to specific occasions of the utility model technology, many modifications can be made to the utility model without departing from its protection scope. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all embodiments falling within the scope of the claims.

Claims

1. An intelligent voice gateway, characterized by It includes: Bluetooth dual-mode intelligent voice Internet of Things chip, Bluetooth chip, power amplifier circuit, USB interface circuit, USB-to-serial circuit, low dropout linear regulator circuit, dimming circuit, color adjusting circuit; the Bluetooth chip and the power amplifier circuit are connected with the Bluetooth dual-mode intelligent voice Internet of Things chip, the Bluetooth chip is also connected with the low dropout linear regulator circuit, the USB-to-serial circuit, the dimming circuit and the color adjusting circuit respectively, and the USB interface circuit is also connected with the USB-to-serial circuit, the low dropout linear regulator circuit and the power amplifier circuit respectively.

2. The intelligent voice gateway of claim 1, wherein, The Bluetooth dual-mode intelligent voice Internet of Things chip includes US665P31.

3. The intelligent voice gateway of claim 1, wherein, The Bluetooth chip includes TG7120B.

4. The intelligent voice gateway of claim 1, wherein, The power amplifier circuit includes: the pin 1 of the audio power amplifier chip U1 is connected with one end of the resistor R1 and one end of the resistor R2 respectively, the pin 2 of the audio power amplifier chip U1 is connected with the pin 3 of the audio power amplifier chip U1 and one end of the capacitor C3 respectively, the pin 4 of the audio power amplifier chip U1 is connected with one end of the resistor R4 and one end of the resistor R5 respectively, the other end of the resistor R4 is connected with one end of the capacitor C4, the pin 5 of the audio power amplifier chip U1 is connected with the other end of the resistor R5, and the pin 6 of the audio power amplifier chip U1 is connected with one end of the capacitor C5 and one end of the capacitor C6 respectively.

5. The intelligent voice gateway of claim 1, wherein, The USB interface circuit includes: the pin 2 of the USB interface chip J3 is connected with one end of the voltage stabilizing diode D1, and the pin 3 of the USB interface chip J3 is connected with one end of the voltage stabilizing diode D2.

6. The intelligent voice gateway of claim 1, wherein, The USB-to-serial circuit includes: the pin 2 of the USB-to-serial chip U6 is connected with one end of the resistor R9, the pin 3 of the USB-to-serial chip U6 is connected with one end of the resistor R8, the pin 4 of the USB-to-serial chip U6 is connected with one end of the capacitor C25, the pin 5 of the USB-to-serial chip U6 is connected with one end of the resistor R11, the pin 6 of the USB-to-serial chip U6 is connected with one end of the resistor R12, and the pin 16 of the USB-to-serial chip U6 is connected with one end of the capacitor C26.

7. The intelligent voice gateway of claim 1, wherein, The low dropout linear regulator circuit includes: the pin 1 of the low dropout linear regulator chip U5 is connected with one end of the capacitor C21, one end of the capacitor C22 and one end of the resistor R10 respectively, the pin 3 of the low dropout linear regulator chip U5 is connected with the other end of the resistor R10, and the pin 5 of the low dropout linear regulator chip U5 is connected with one end of the capacitor C23 and one end of the capacitor C24 respectively.

8. The intelligent voice gateway of claim 1, wherein, The dimming circuit comprises: one end of the resistor R15 is connected with one end of the resistor R16 and one end of the resistor R17 respectively, the other end of the resistor R15 is connected with pin 5 of the diode D4, the other end of the resistor R16 is connected with pin 3 of the diode D4, the other end of the resistor R17 is connected with pin 1 of the diode D4, pin 6 of the diode D4 is connected with the drain of the MOS Q2, the gate of the MOS Q2 is connected with one end of the resistor R20 and one end of the resistor R25 respectively, pin 4 of the diode D4 is connected with the drain of the MOS Q3, the gate of the MOS Q3 is connected with one end of the resistor R21 and one end of the resistor R26 respectively, pin 2 of the diode D4 is connected with the drain of the MOS Q4, the gate of the MOS Q4 is connected with one end of the resistor R22 and one end of the resistor R27 respectively.

9. The intelligent speech gateway according to any of claims 1 to 8, characterized in that, The color adjusting circuit comprises: one end of the resistor R18 is connected with one end of the resistor R19, the other end of the resistor R18 is connected with the positive electrode of the diode D5, the negative electrode of the diode D5 is connected with the drain of the MOS Q5, the gate of the MOS Q5 is connected with one end of the resistor R23 and one end of the resistor R28 respectively, the other end of the resistor R19 is connected with the positive electrode of the diode D6, the negative electrode of the diode D6 is connected with the drain of the MOS Q6, the gate of the MOS Q6 is connected with one end of the resistor R24 and one end of the resistor R29 respectively.

10. The intelligent voice gateway of claim 9, wherein, The intelligent voice gateway further comprises: a microphone interface connector.

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