WO2021068345A1 - 一种集成远场拾音及充电的装置 - Google Patents

一种集成远场拾音及充电的装置 Download PDF

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Publication number
WO2021068345A1
WO2021068345A1 PCT/CN2019/118188 CN2019118188W WO2021068345A1 WO 2021068345 A1 WO2021068345 A1 WO 2021068345A1 CN 2019118188 W CN2019118188 W CN 2019118188W WO 2021068345 A1 WO2021068345 A1 WO 2021068345A1
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Prior art keywords
microprocessor
module
voice
signal
input module
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PCT/CN2019/118188
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English (en)
French (fr)
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姚嘉
高永泽
任金平
马琪
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杭州微纳科技股份有限公司
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Publication of WO2021068345A1 publication Critical patent/WO2021068345A1/zh

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25257—Microcontroller

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  • the present invention relates to the technical field of audio processing devices, in particular to a device integrating far-field sound pickup and charging.
  • Far-field voice is a way of interaction between humans and machines. Compared with near-field voice, the difference is that its working distance is usually between 1 meter and 10 meters.
  • the main technical difficulty lies in multipath reflection and mixing. Noise effect and background noise interference processing.
  • voice operation is undoubtedly a safer way of operation.
  • Auxiliary voice peripherals combined with mobile phone software voice assistant is a voice operation solution. It mainly uses far-field sound pickup technology to pick up voice information through the front-end voice processing module, and perform echo cancellation, noise reduction, de-reverberation, and voice on the sound signal. After enhancement and other processing, it is transmitted to an external device, and the external device recognizes and responds to the voice information.
  • an embodiment of the present application provides an integrated far-field sound pickup and charging device.
  • the device includes a voice input module, a microprocessor, a host interface, a communication module, and a power supply module. ;
  • the host interface is connected to the power supply module, and is connected to the microprocessor
  • the power supply module is connected to the microprocessor, and connected to the voice input module;
  • the microprocessor is connected to the voice input module
  • the voice input module is used to obtain long-distance sound signals
  • the communication module is connected to the microprocessor
  • the microprocessor is used to process the sound signal acquired by the voice input module
  • the host interface is used to transmit the sound signal processed by the microprocessor to an external device connected to the device;
  • the power supply module is used to supply power to the device, and to supply power to external devices connected to the device through the host interface.
  • the device further includes one or more of the following: an output module and an input module;
  • the output module is connected to the microprocessor
  • the input module is connected with the microprocessor.
  • the communication module includes one or more of the following: Bluetooth module, FM module;
  • the Bluetooth module is connected with the microprocessor
  • the FM module is connected to the microprocessor
  • the bluetooth module is used to output the data obtained by the microprocessor to an external bluetooth device connected to the bluetooth module;
  • the FM module is used to receive FM broadcasts
  • the bluetooth module is used to output the data obtained by the microprocessor to an external bluetooth device connected to the bluetooth module;
  • the FM module is used to receive FM broadcasts
  • the external Bluetooth device is a Bluetooth car speaker on a car multimedia terminal
  • the microprocessor is configured to obtain audio data of the external device through the host interface, and/or obtain audio data of FM broadcast through the FM module;
  • the microprocessor is configured to perform echo cancellation processing on the audio data, extract a reference signal, and send the processed audio data to a car speaker through the Bluetooth module for playback;
  • the voice input module is used to pick up the user's voice signal and transmit the voice signal to the microprocessor;
  • the microprocessor is configured to perform echo cancellation processing on the sound signal according to the reference signal to obtain a noise-reduced sound signal, recognize the noise-reduced sound signal, and confirm whether it matches a pre-stored wake-up word.
  • a wake-up word is pre-stored, a wake-up instruction is sent to the external device through the host interface to invoke the voice assistant of the external device, and a noise-reducing sound signal is sent to the external device through the host interface to achieve communication with the external device.
  • the external device performs voice interaction; when the pre-stored wake-up word is not matched, data is not sent to the external device through the host interface to ensure user privacy, reduce processing overhead of the external device, and reduce power consumption.
  • the output module is a speaker, and the speaker is connected to the microprocessor; the speaker is used to play a sound signal processed by the microprocessor;
  • the output module is an audio power amplifier and a speaker, the audio power amplifier is connected to the microprocessor, and the speaker is connected to the audio power amplifier; the audio power amplifier is used to process the sound of the microprocessor The signal is power-amplified, and the speaker is used to play the sound signal after the power-amplification of the audio power amplifier.
  • the input module is a button, a touch screen, or an infrared sensor, which is used to manually trigger a voice recognition instruction when the local keyword wake-up cannot be performed.
  • the host interface is one or more of the following: USB-TYPE-C interface, MICRO-USB interface, APPLE LIGHTNING interface.
  • the voice input module includes at least one microphone.
  • the processing the sound signal acquired by the voice input module includes:
  • the power module includes a power management chip and a working indicator.
  • the microprocessor integrates Audio codec IP core, power management module, and stereo audio codec IP.
  • the smart host (such as a mobile phone) is connected to the integrated far-field pickup and charging device through the host interface, the audio signal is input to the microprocessor, and the microprocessor extracts the reference signal required for echo cancellation, and at the same time, the audio signal is passed through the Bluetooth module Send it to the car multimedia player for playback.
  • the voice input module picks up the user's voice signal and inputs it to the microprocessor;
  • the microprocessor uses the reference signal to perform technical processing such as echo cancellation on the picked-up sound signal to obtain a clean voice signal.
  • the local voice recognition engine recognizes the voice and confirms whether it matches the pre-stored instruction;
  • the wake-up command is sent to the external device to invoke the voice assistant, and the noise-reduced voice signal is sent to the smart host through the USB interface to realize the voice interaction with the smart host;
  • the voice signal is not sent to the host through the interface to ensure user privacy, while also reducing the processing overhead of the smart host and indirectly reducing power consumption.
  • the smart host is connected to the integrated far-field pickup and charging device through the host interface.
  • the integrated far-field pickup and charging device receives the audio signal through the FM module and inputs it to the microprocessor, and the microprocessor extracts the reference needed for echo cancellation At the same time, the audio signal is sent to the car multimedia player for playback through the Bluetooth module.
  • the voice input module picks up the user's voice signal and inputs it to the microprocessor;
  • the microprocessor uses the reference signal to perform technical processing such as echo cancellation on the picked-up sound signal to obtain a clean voice signal.
  • the local voice recognition engine recognizes the voice and confirms whether it matches the pre-stored instruction;
  • the wake-up command is sent to the external device to invoke the voice assistant, and the noise-reduced voice signal is sent to the smart host through the USB interface to realize the voice interaction with the smart host;
  • the sound signal picked up by the voice input module is not sent to the smart host through the interface, ensuring user privacy, while also reducing the processing overhead of the smart host and indirectly reducing power consumption.
  • the device of the present application includes: the device includes: a voice input module, a microprocessor, a host interface, a Bluetooth module, an FM module, and a power supply module; the host interface is connected to the power supply module, and is connected to the microprocessor; the power supply module and the microprocessor Connected to the voice input module; the microprocessor is connected to the voice input module; the Bluetooth module is connected to the microprocessor; the FM module is connected to the microprocessor; the Bluetooth module is used to input the data obtained by the microprocessor to External Bluetooth device connected with the Bluetooth module; FM module, used to receive FM broadcast; voice input module, used to obtain remote sound signals; microprocessor, used to process the sound signals obtained by the voice input module; host interface , Used to transmit the sound signal processed by the microprocessor to the external device connected to the device; the power module, used to supply power to the device, and to supply power to the external device connected to the device through the host interface.
  • the device has a light structure, convenient operation, far-field sound pickup, strong anti
  • FIG. 1 shows a schematic structural diagram of an integrated far-field sound pickup and charging device provided by an embodiment of the present application
  • Figure 2 shows a schematic structural diagram of another integrated far-field sound pickup and charging device provided by an embodiment of the present application
  • FIG. 3 shows a schematic structural diagram of an integrated far-field sound pickup and charging device connected to an external device according to an embodiment of the present application
  • FIG. 4 shows a schematic diagram of a microprocessor architecture provided by an embodiment of the present application
  • FIG. 5 shows a working flow chart of far-field sound pickup and charging for playing music of an integrated far-field sound pickup and charging device provided by an embodiment of the present application
  • Fig. 6 shows a working flow chart of receiving FM broadcast far-field sound pickup and charging for an integrated far-field sound pickup and charging device provided by an embodiment of the present application.
  • spatially relative terms such as “upper”, “lower”, “left” and “right” may be used here to describe the relationship between one element or feature shown in the figure with respect to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are meant to include different orientations of the device in use or operation. For example, if the device in the figure is turned upside down, elements described as being “under” other elements or features will be located “above” the other elements or features. Therefore, the exemplary term “lower” can encompass both upper and lower positions. The device can be positioned in other ways (rotated by 90 degrees or in other orientations), and the relative description of the space used here can be explained accordingly.
  • the car voice assistant is a kind of voice operation.
  • the car voice assistant mainly uses far-field sound pickup technology to pick up voice information through the front-end voice processing module, and then transmit the voice signal to the outside after processing such as noise reduction, de-reverberation, echo cancellation, and voice enhancement.
  • Equipment, external equipment recognizes and responds to voice information.
  • the present invention proposes an integrated far-field sound pickup and charging device, which can be used as an on-board charging cable with far-field sound pickup function. Its structure is light and handy, easy to operate, far-field sound pickup, and anti-interference ability. It is strong and can be used for charging at the same time, which is convenient for users to interact with external devices by voice.
  • the structure of the integrated far-field sound pickup and charging device provided by the present invention is shown in Fig. 1.
  • the device includes: the device includes: a voice input module, a microprocessor, a host interface, a Bluetooth module, an FM module, and a power supply module.
  • the host interface is connected to the power supply module and to the microprocessor.
  • the power supply module is connected to the microprocessor and connected to the voice input module.
  • the microprocessor is connected with the voice input module.
  • the Bluetooth module is connected with the microprocessor.
  • the FM module is connected to the microprocessor.
  • the structure of the integrated far-field sound pickup and charging device may include an output module and an input module in addition to the above-mentioned modules.
  • the output module is connected with the microprocessor.
  • the input module is connected to the microprocessor.
  • the Bluetooth module is connected to the microprocessor, and the FM module is also connected to the microprocessor.
  • the Bluetooth module is used to output the data obtained by the microprocessor to an external Bluetooth device connected to the Bluetooth module.
  • FM module used to receive FM radio.
  • the Bluetooth module can also be connected to the Bluetooth on the vehicle multimedia terminal. After the Bluetooth module obtains the audio data from the external device through the microprocessor, it passes the audio data through the vehicle connected to the Bluetooth on the vehicle multimedia terminal. Speaker playback.
  • the microprocessor transmits the audio information played by the external device to the Bluetooth module through the audio interface.
  • the Bluetooth module connects to the Bluetooth on the vehicle multimedia terminal through Bluetooth, and plays audio information through the vehicle speaker on the vehicle multimedia terminal.
  • FM is used to receive FM broadcasts.
  • the implementation of the output module can be changed according to different requirements and environments.
  • the output module may only be a speaker, and the speaker is connected to the microprocessor. The speaker is used to play the sound signal processed by the microprocessor.
  • the output module can be an audio amplifier and a speaker, an audio amplifier and a microprocessor Connect, the speaker is connected to the audio amplifier.
  • the audio power amplifier is used to amplify the power of the sound signal processed by the microprocessor, and the speaker is used to play the sound signal after the power amplification of the audio power amplifier.
  • the input module is used to manually trigger the voice recognition instruction when the local keyword wake-up cannot be performed.
  • the input module can be a button, a touch screen, an infrared sensor, or a voice microphone, etc., as long as it can receive the user's input information.
  • the host interface is used to transmit the sound signal processed by the microprocessor to the external device connected to the device.
  • the host interface is one or more of the following: USB-TYPE-C interface, MICRO-USB interface, APPLE LIGHTNING interface.
  • the host interface can be used to transmit audio data and charge the device.
  • the USB bus in the host interface is connected with external devices (such as smart hosts, smart phones, smart tablets, smart driving multimedia terminals, etc.).
  • the audio data is transmitted to an external device, and the external device performs voice recognition on the sound signal preprocessed by the microprocessor, understands semantics, responds to the user's sound signal, and realizes human-computer interaction with the user.
  • the power supply module is used to supply power to the device and to supply power to external devices connected to the device through the host interface.
  • the power module is used to provide power to the far-field pickup device, and can also charge external devices.
  • the power supply of the power module can be powered from the car cigarette lighter or the car USB interface.
  • the connection relationship between the device (100 in FIG. 3) and the smart host (120 in FIG. 3) that integrates far-field sound pickup and charging is shown in FIG.
  • the power module includes a power management chip, a working indicator, and a switch.
  • the power supply module can supply power to the microprocessor and the voice input module, and the power supply module can charge the smart device terminal, that is, the user can use the integrated far-field sound pickup device as a kind of charging cable and carry it for himself
  • the device terminal is charged, and provides voice interactive operation with external devices during charging to avoid danger during direct operation.
  • the voice input module is used for far-field sound pickup to obtain long-distance sound signals.
  • the voice input module includes at least one microphone.
  • the voice input module adopts single microphone or double microphone, which is used for far-field sound pickup to obtain long-distance sound signals.
  • the microphone is a high-sensitivity microphone.
  • the voice input module can be a high-sensitivity microphone, the voice input module can also be an array of two high-sensitivity microphones, and the voice input module can also be an array of multiple high-sensitivity microphones.
  • the microprocessor is used to process the sound signal obtained by the voice input module. For example, noise reduction, dereverberation, echo cancellation, speech enhancement, keyword recognition, etc. are performed on the sound signal acquired by the voice input module.
  • the microprocessor integrates Audio codec IP core, power management module, and stereo audio codec IP.
  • the microprocessor adopts a dedicated audio processing chip, which is a dedicated human-computer interaction/audio processing chip.
  • the chip integrates high-performance and low-power Audio codec IP core and power management module.
  • Codec IP is a low-power, flexible and highly integrated
  • the stereo audio codec IP supports stereo ADC and microphone input, stereo DAC and headset playback.
  • the integrated high-performance processing core can perform local speech recognition based on neural network.
  • the integrated internal memory can store the speech recognition library.
  • M in Figure 4 is the abbreviation of Master
  • S is the abbreviation of Slave
  • the codec is the Audio codec IP core
  • the PMU is the power management module.
  • the microprocessor can also realize the functions of voice recognition, audio transmission, air mouse, touch, somatosensory and other functions of intelligent human-computer interaction equipment.
  • ⁇ Touch realized by a touch sensor.
  • the touch sensor is a PCB board with a certain area formed by the principle of capacitive touch.
  • the back is a touch control chip and peripheral circuits and some wiring.
  • the front is a matrix pad for sensing touch.
  • the capacitance change, the touch chip detects the capacitance change of these pads to determine the touch position, and then performs analog-to-digital conversion, filtering and other processing on this information, and outputs reliable coordinate values; when touching on the touch panel, the touch chip follows a certain rule Scan the capacitance value of each capacitive sensing electrode in the vertical and horizontal directions, and make corresponding records, and determine the specific position of the finger touch according to the change in the capacitance value, so as to calculate the specific coordinates of the position. According to the coordinates of different time intervals, the direction and speed of the finger movement can also be judged.
  • ⁇ Somatosensory/gesture recognition use the accelerometer to collect motion data to establish a variety of motion models, including motion, sleep, wrist turning/lowering, and tapping; the above motion data is collected in real time by the accelerometer, and collected by a smoothing filter Smooth the data to remove noise; analyze the filtered data, compare the target action data model, and perform action recognition. After the action recognition is completed, follow-up data such as calorie consumption, mileage, exercise mode, sleep quality and other exercise-related information are calculated according to different action recognition needs.
  • ⁇ Angle positioning Two photodiodes are used to receive the infrared rays sent by the infrared device. The stronger the intensity of the infrared rays, the greater the intensity of the converted electrical signal. Compare the electrical signal strengths output by the two photodiodes, and obtain the infrared according to the look-up table method.
  • the angle information of the equipment, the realization of angle positioning, and the algorithm has been applied for invention patents.
  • Multi-sensor data fusion coordinate, combine, and complement the information obtained by multiple sensors to overcome the limitations of a single sensor and improve the effective performance of the system; perform data autonomy on the data collected by sensors such as temperature sensors, acceleration sensors, and gyroscopes. Adapt to the weighted fusion estimation algorithm to calculate the data required in the human-computer interaction scheme.
  • ⁇ Dual microphone noise reduction Two microphones are used to collect and process the voice signal, enhance the voice signal, and suppress stationary noise (such as white noise, wind noise and environmental noise during car operation, etc.) and non-stationary noise (such as undesired direction) Voice, music, TV background sound and other noises, etc.).
  • stationary noise such as white noise, wind noise and environmental noise during car operation, etc.
  • non-stationary noise such as undesired direction
  • ⁇ Audio codec It is highly configurable, and can adjust the sound quality, delay and stream characteristic parameters according to application requirements to achieve high sound quality, low delay and low stream of wireless audio.
  • the use of multimedia acceleration instructions effectively reduces the complexity of the algorithm and significantly improves the efficiency of the algorithm in the processor.
  • the WN804XX chip based on the CK804 processor can run audio codec algorithms with different configurations to meet the needs of different wireless audio applications.
  • ⁇ Wireless transmission protocol stack supports wireless transmission protocols such as BLE5.0, which can provide low-cost programmable complete solutions for smart homes, smart remote controls, and wireless audio systems.
  • the voice input module in the device that integrates far-field pickup and charging performs far-field pickup
  • the microprocessor processes the sound signals collected by the voice input module
  • the host interface will micro-processing
  • the sound signal processed by the device is transmitted to the smart host, and the smart host realizes voice recognition and interaction.
  • the external Bluetooth device is a Bluetooth vehicle speaker on the vehicle multimedia terminal.
  • the microprocessor is used to obtain the audio data of the external device through the host interface, and/or the audio data of the FM broadcast through the FM module.
  • the microprocessor is used to perform echo cancellation processing on the audio data, extract the reference signal, and send the processed audio data to the car speakers through the Bluetooth module for playback.
  • the voice input module is used to pick up the user's voice signal and transmit the voice signal to the microprocessor.
  • the microprocessor is used to perform echo cancellation processing on the sound signal according to the reference signal to obtain the noise-reduced sound signal, recognize the noise-reduced sound signal, and confirm whether it matches the pre-stored wake-up word.
  • the host interface sends a wake-up command to the external device to activate the voice assistant of the external device, and sends a noise-reducing sound signal to the external device through the host interface to realize voice interaction with the external device.
  • the pre-stored wake-up word is not matched, data is not sent to the external device through the host interface to ensure user privacy, reduce the processing overhead of the external device, and reduce power consumption.
  • the smart host (such as a mobile phone) is connected to the integrated far-field pickup and charging device through the host interface, the audio signal is input to the microprocessor, and the microprocessor extracts the reference signal required for echo cancellation, and at the same time, the audio signal is passed through the Bluetooth module Send it to the car multimedia player for playback.
  • the voice input module picks up the user's voice signal and inputs it to the microprocessor;
  • the microprocessor uses the reference signal to perform technical processing such as echo cancellation on the picked-up sound signal to obtain a clean voice signal.
  • the local voice recognition engine recognizes the voice and confirms whether it matches the pre-stored instruction;
  • the wake-up command is sent to the external device to invoke the voice assistant, and the noise-reduced voice signal is sent to the smart host through the USB interface to realize the voice interaction with the smart host;
  • the voice signal is not sent to the host through the interface to ensure user privacy, while also reducing the processing overhead of the smart host and indirectly reducing power consumption.
  • the smart host is connected to the integrated far-field pickup and charging device through the host interface.
  • the integrated far-field pickup and charging device receives the audio signal through the FM module and inputs it to the microprocessor, and the microprocessor extracts the reference needed for echo cancellation At the same time, the audio signal is sent to the car multimedia player for playback through the Bluetooth module.
  • the voice input module picks up the user's voice signal and inputs it to the microprocessor;
  • the microprocessor uses the reference signal to perform technical processing such as echo cancellation on the picked-up sound signal to obtain a clean voice signal.
  • the local voice recognition engine recognizes the voice and confirms whether it matches the pre-stored instruction;
  • the wake-up command is sent to the external device to invoke the voice assistant, and the noise-reduced voice signal is sent to the smart host through the USB interface to realize the voice interaction with the smart host;
  • the sound signal picked up by the voice input module is not sent to the smart host through the interface, ensuring user privacy, while also reducing the processing overhead of the smart host and indirectly reducing power consumption.
  • the power module includes a power management chip, a work indicator, and a switch, the power module provides power to the microprocessor and the voice input module, and the power module can provide power to the smart device.
  • Terminal charging that is, the user can use the integrated far-field sound pickup device as a charging cable to charge the device terminal that he carries, and provide voice interactive operation with the terminal device when charging, to ensure that the device is available when driving for a long time. Sufficient power.
  • the device for integrating far-field sound pickup and charging aims at the technical difficulties of voice operation in the vehicle environment, integrates far-field sound pickup, local voice recognition, Bluetooth audio playback, FM audio playback and charging, and has a light structure, convenient operation, and far-field pickup. It has strong adaptability to sound and environmental noise, local voice recognition plus keyword wake-up to ensure privacy, and at the same time it can be used for charging, ensuring that external devices can continue to be used in long-term in-vehicle scenarios.
  • the device includes: the device includes: a voice input module, a microprocessor, a host interface, and a power supply module; the host interface is connected to the power supply module, and connected to the microprocessor; the power supply module is connected to the microprocessor, and, and the voice input module Connection; the microprocessor is connected to the voice input module; the voice input module is used to obtain remote voice signals; the microprocessor is used to process the voice signals obtained by the voice input module; the host interface is used to connect the microprocessor The processed sound signal is transmitted to an external device connected to the device; the power module is used to supply power to the device, and to supply power to the external device connected to the device through the host interface.
  • the device has a light structure, convenient operation, far-field sound pickup, strong anti-interference ability, and can be used for charging at the same time, facilitating voice interaction between users and external equipment.

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Abstract

一种集成远场拾音及充电的装置（100），包括：语音输入模块、微处理器、主机接口，蓝牙模块，FM模块以及电源模块；主机接口与电源模块，微处理器连接；电源模块与微处理器，语音输入模块连接；微处理器与语音输入模块连接；蓝牙模块与微处理器连接；FM模块与微处理器连接；语音输入模块，用于获取远距离的声音信号；微处理器，用于对语音输入模块获取的声音信号进行处理；主机接口，用于将微处理器处理后的声音信号传输至与装置连接的外部设备；电源模块，用于为装置供电，以及，通过主机接口为与装置连接的外部设备供电。结构轻巧，操作方便，远场拾音，抗干扰能力强，同时可用于充电，方便用户与外部设备进行语音交互。

Description

一种集成远场拾音及充电的装置 技术领域
本发明涉及音频处理装置技术领域，尤其涉及一种集成远场拾音及充电的装置。
背景技术
远场语音是一种人与机器间的交互方式，相对与近场语音来说，区别是它的作用距离通常会在1米到10米之间，主要的技术难点在于对于多径反射、混响效应及背景噪音干扰的处理。
车载环境，双手在方向盘上，眼睛在路上，语音操作无疑是一种比较安全的操作方式。辅助语音外设配合手机软件语音助手就是一种语音操作解决方案，它主要利用远场拾音技术，通过前端语音处理模块拾取语音信息，对声音信号进行回声消除、降噪、去混响、语音增强等处理后传输给外接设备，外接设备对语音信息进行识别响应。
发明内容
针对车载环境及远场拾音技术难点，本申请实施例提供了一种集成远场拾音及充电的装置，所述装置包括：语音输入模块、微处理器、主机接口、通信模块以及电源模块；
所述主机接口与所述电源模块连接，以及，与所述微处理器连接；
所述电源模块与所述微处理器连接，以及，与所述语音输入模块连接；
所述微处理器与所述语音输入模块连接；
所述语音输入模块，用于获取远距离的声音信号；
所述通信模块与所述所述微处理器连接；
所述微处理器，用于对所述语音输入模块获取的声音信号进行处理；
所述主机接口，用于将所述微处理器处理后的声音信号传输至与所述装置连接的外部设备；
所述电源模块，用于为所述装置供电，以及，通过所述主机接口为与所述装置连接的外部设备供电。
可选地，所述装置还包括如下的一种或多种：输出模块，输入模块；
所述输出模块与所述微处理器连接；
所述输入模块与所述微处理器连接。
可选地，
所述通信模块包括如下的一种或多种：蓝牙模块，FM模块；
所述蓝牙模块与所述所述微处理器连接；
所述FM模块与所述所述微处理器连接；
所述蓝牙模块，用于将所述微处理器得到的数据输至与所述蓝牙模块连接的外部蓝牙设备；
所述FM模块，用于接收调频广播；
所述蓝牙模块，用于将所述微处理器得到的数据输至与所述蓝牙模块连接的外部蓝牙设备；
所述FM模块，用于接收调频广播；
所述外部蓝牙设备为车载多媒体终端上的蓝牙车载音箱；
所述微处理器，用于通过所述主机接口获取所述外部设备的音频数据，和/或，通过所述FM模块获取调频广播的音频数据；
所述微处理器，用于对所述音频数据进行回声消除处理，提取参考信号，将处理后的音频数据通过所述蓝牙模块发送给车载音箱播放；
所述语音输入模块，用于拾取用户的声音信号，并将所述声音信号传输至所述微处理器；
所述微处理器，用于根据所述参考信号对所述声音信号进行回声消除处理，得到降噪的声音信号，对降噪的声音信号进行识别，确认是否跟预存唤醒词匹配，当匹配到预存唤醒词时，通过所述主机接口向所述外部设备发送唤醒指令，以调起外部设备的语音助手，并通过所述主机接口向所述外部设备发送降噪的声音信号，实现与所述外部设备进行语音交互；当未匹配到预存唤醒词时，不通过所述主机接口向所述外部设备发送数据，以确保用户隐私，降低所述外部设备的处理开销，降低功耗。
可选地，所述输出模块为喇叭，所述喇叭与所述所述微处理器连接；所述喇叭用于播放所述微处理器处理后的声音信号；
或者，
所述输出模块为音频功放和喇叭，所述音频功放与所述所述微处理器连接，所述喇叭与所述音频功放连接；所述音频功放用于对所述微处理器处理后的声音信号进行功率放大，所述喇叭用于播放所述音频功放进行功率放大后的声音信号。
可选地，所述输入模块为按键、触摸屏、红外感应器，其用于在无法进行本地关键词唤醒的情况下手动触发语音识别指令。
可选地，所述主机接口为以下的一种或多种：USB－TYPE－C接口、MICRO－USB接口、APPLE LIGHTNING接口。
可选地，所述语音输入模块包括至少1个麦克风。
可选地，所述对所述语音输入模块获取的声音信号进行处理，包括：
对所述语音输入模块获取的声音信号进行降噪、去混响、回声消除、语音增强、关键词识别处理。
可选地，所述电源模块包括电源管理芯片、工作指示灯。
可选地，所述微处理器集成Audio codec IP核、电源管理模块，立体声音频编解码器IP。
在车载播放音乐环境下，本装置工作流程为：
1)智能主机(如手机)通过主机接口连接到集成远场拾音及充电的装置，音频信号输入到微处理器，微处理器提取回声消除所需参考信号，同时，将音频信号通过蓝牙模块发送给车载多媒体播放器进行播放。语音输入模块拾取用户的声音信号输入到微处理器；
2)微处理器利用参考信号对拾取的声音信号进行回声消除等技术处理，获得干净的语音 信号。本地语音识别引擎对语音进行识别，确认是否跟预存指令匹配；
3)当识别到预置唤醒词时，发送唤醒指令到外部设备调起语音助手，并通过USB接口向智能主机发送降噪过的语音信号，实现与智能主机的语音交互；
4)没有识别到唤醒词时，语音信号不通过接口发送给主机，确保用户隐私，同时也降低智能主机的处理开销，间接降低功耗。
在车载收听广播环境下，本装置工作流程为：
1)智能主机通过主机接口连接到集成远场拾音及充电的装置，集成远场拾音及充电的装置通过FM模块接收音频信号并输入到微处理器，微处理器提取回声消除所需参考信号，同时，将音频信号通过蓝牙模块发送给车载多媒体播放器进行播放。语音输入模块拾取用户的声音信号输入到微处理器；
2)微处理器利用参考信号对拾取的声音信号进行回声消除等技术处理，获得干净的语音信号。本地语音识别引擎对语音进行识别，确认是否跟预存指令匹配；
3)当识别到预置唤醒词时，发送唤醒指令到外部设备调起语音助手，并通过USB接口向智能主机发送降噪过的语音信号，实现与智能主机的语音交互；
4)没有识别到唤醒词时，语音输入模块拾取的声音信号不通过接口发送给智能主机，确保用户隐私，同时也降低智能主机的处理开销，间接降低功耗。
有益效果如下：
本申请的装置包括：该装置包括：语音输入模块、微处理器、主机接口，蓝牙模块，FM模块以及电源模块；主机接口与电源模块连接，以及，与微处理器连接；电源模块与微处理器连接，以及，与语音输入模块连接；微处理器与语音输入模块连接；蓝牙模块与微处理器连接；FM模块与微处理器连接；蓝牙模块，用于将微处理器得到的数据输至与蓝牙模块连接的外部蓝牙设备；FM模块，用于接收调频广播；语音输入模块，用于获取远距离的声音信号；微处理器，用于对语音输入模块获取的声音信号进行处理；主机接口，用于将微处理器处理后的声音信号传输至与装置连接的外部设备；电源模块，用于为装置供电，以及，通过主机接口为与装置连接的外部设备供电。本装置结构轻巧，操作方便，远场拾音，抗干扰能力强，同时可用于充电，方便用户与外部设备进行语音交互。
附图说明
下面将参照附图描述本申请的具体实施例，其中：
图1示出了本申请一实施例提供的一种集成远场拾音及充电的装置的结构示意图；
图2示出了本申请一实施例提供的另一种集成远场拾音及充电的装置的结构示意图；
图3示出了本申请一实施例提供的一种集成远场拾音及充电的装置与外部设备连接的结构示意图；
图4示出了本申请一实施例提供的一种微处理器架构示意图；
图5示出了本申请一实施例提供的一种集成远场拾音及充电的装置的播放音乐远场拾音及充电工作流程图；
图6示出了本申请一实施例提供的一种集成远场拾音及充电的装置的接收FM广播远场拾 音及充电工作流程图。
具体实施方式
下面，参考附图，对本发明进行更全面的说明，附图中示出了本发明的示例性实施例。然而，本发明可以体现为多种不同形式，并不应理解为局限于这里叙述的示例性实施例。而是，提供这些实施例，从而使本发明全面和完整，并将本发明的范围完全地传达给本领域的普通技术人员。
为了易于说明，在这里可以使用诸如“上”、“下”“左”“右”等空间相对术语，用于说明图中示出的一个元件或特征相对于另一个元件或特征的关系。应该理解的是，除了图中示出的方位之外，空间术语意在于包括装置在使用或操作中的不同方位。例如，如果图中的装置被倒置，被叙述为位于其他元件或特征“下”的元件将定位在其他元件或特征“上”。因此，示例性术语“下”可以包含上和下方位两者。装置可以以其他方式定位(旋转90度或位于其他方位)，这里所用的空间相对说明可相应地解释。
车载环境，双手在方向盘上，眼睛在路上，语音操作无疑是一种很安全的选择。车载语音助手就是一种语音操作车载语音助手主要利用远场拾音技术，通过前端语音处理模块拾取语音信息，对声音信号进行降噪、去混响、回声消除、语音增强等处理后传输给外部设备，外部设备对语音信息进行识别响应。
针对车载语音助手应用，本发明提出了一种集成远场拾音及充电的装置，可以作为具有远场拾音功能的车载充电线，其结构轻巧，操作方便，远场拾音，抗干扰能力强，同时可用于充电，方便用户与外部设备进行语音交互。
本发明提供的集成远场拾音及充电的装置的结构如图1所示，该装置包括：装置包括：语音输入模块、微处理器、主机接口，蓝牙模块，FM模块以及电源模块。
主机接口与电源模块连接，以及，与微处理器连接。
电源模块与微处理器连接，以及，与语音输入模块连接。
微处理器与语音输入模块连接。
蓝牙模块与微处理器连接。
FM模块与微处理器连接。
参见图2，本发明提供的集成远场拾音及充电的装置的结构除包括上述模块之外，还可以包括输出模块，输入模块。
输出模块与微处理器连接。
输入模块与微处理器连接。
其中，
1、蓝牙模块，FM模块
蓝牙模块与微处理器连接，FM模块也与微处理器连接。
蓝牙模块，用于将微处理器得到的数据输至与蓝牙模块连接的外部蓝牙设备。
FM模块，用于接收调频广播。
另外，若装置位于车载环境，蓝牙模块还可以与车载多媒体终端上的蓝牙连接，蓝牙模 块通过微处理器获取外部设备上的音频数据后，将音频数据通过与车载多媒体终端上的蓝牙连接的车载音箱播放。
例如，微处理器将外部设备播放的音频信息通过音频接口输送给蓝牙模块。蓝牙模块通过蓝牙连接车载多媒体终端上的蓝牙，并通过车载多媒体终端上的车载音箱播放音频信息。
FM用于接收调频广播。
2、输出模块
输出模块的实现方式可以根据需求，环境等不同而变化。
例如，若环境较安静，语音输入模块获取远距离的声音信号噪音较少，微处理器处理后的声音信号质量较佳，则输出模块可以仅为喇叭，喇叭与微处理器连接。喇叭用于播放微处理器处理后的声音信号。
再例如，若环境较吵杂，语音输入模块获取远距离的声音信号噪音较多，微处理器处理后的声音信号质量不佳，则输出模块可以为音频功放和喇叭，音频功放与微处理器连接，喇叭与音频功放连接。音频功放用于对微处理器处理后的声音信号进行功率放大，喇叭用于播放音频功放进行功率放大后的声音信号。
3、输入模块
输入模块用于在无法进行本地关键词唤醒的情况下手动触发语音识别指令。
输入模块可以为按键，也可以是触摸屏、红外感应器，还可以是语音麦克风等，只要能接收用户的输入信息即可。
4、主机接口
主机接口，用于将微处理器处理后的声音信号传输至与装置连接的外部设备。
主机接口为以下的一种或多种：USB－TYPE－C接口、MICRO－USB接口、APPLE LIGHTNING接口。
除此之外，还可以为其他接口，本实施例不对具体接口进行限定。
主机接口可以用于传输音频数据及对设备进行充电，传输音频时主机接口里的USB总线与外部设备(如智能主机，智能手机，智能平板电脑、智能行车多媒体终端等)进行连接，将处理后的音频数据传输至外部设备，外部设备对微处理器预处理后的声音信号进行语音识别，语义理解，响应用户的声音信号，与用户实现人机交互。
5、电源模块
电源模块，用于为装置供电，以及，通过主机接口为与装置连接的外部设备供电。
例如，电源模块用于给远场拾音装置提供电源，也可以为外部设备充电。
电源模块的电源可以从车载点烟器或车载USB接口取电。
以外部设备为智能主机为例，集成远场拾音及充电的装置(图3中的100)与智能主机(图3中的120)之间的连接关系如图3所示。
电源模块包括电源管理芯片、工作指示灯和开关。
电源模块可以为所述微处理器、语音输入模块供电，所述电源模块能够为所述智能设备终端充电，即用户能够将所述集成远场拾音的装置作为一种充电线，为自己携带的设备终端充电，并且在充电时提供与外部设备的语音交互操作，避免直接操作时发生危险。
6、语音输入模块
语音输入模块，用于远场拾音，获取远距离的声音信号。
语音输入模块包括至少1个麦克风。如语音输入模块采用单麦克或者双麦克，用于远场拾音，获取远距离的声音信号。
麦克风为高灵敏度麦克风，具体实现时，语音输入模块可以为一个高灵敏度麦克风，语音输入模块也可以为两个高灵敏度麦克风组成的阵列，语音输入模块还可以为多个高灵敏度麦克风组成的阵列。
7、微处理器
微处理器，用于对语音输入模块获取的声音信号进行处理。例如，对语音输入模块获取的声音信号进行降噪、去混响、回声消除、语音增强、关键词识别等处理。
微处理器集成Audio codec IP核、电源管理模块，立体声音频编解码器IP。
微处理器采用专用的音频处理芯片，是专用的人机交互/音频处理芯片，芯片集成高性能低功耗的Audio codec IP核、电源管理模块，Codec IP是一个低功耗、灵活和高度集成的立体声音频编解码器IP。IP支持立体声ADC与麦克风输入，立体声DAC与耳机播放。集成高性能处理内核，可进行基于神经网络的本地语音识别。集成的内部存储器可存储语音识别库。
本实施例中的微处理器在具体实现时，其架构可以如图4所示。其中图4中的M为Master(主)缩写，S为Slave(从)缩写，codec为Audio codec IP核，PMU为电源管理模块。
微处理器还可以实现智能人机交互设备的语音识别、音频传输、空中鼠标、Touch、体感等功能。
●触摸：由触摸传感器实现，触摸传感器是利用电容触摸原理形成的具有一定面积的PCB板，其背面是触摸控制芯片及外围电路和一些走线，正面为矩阵式的焊盘，用于感应触摸电容的变化，触摸芯片检测这些焊盘的电容变化来判断触摸的位置，然后将此信息进行模数转换、滤波等处理，输出可靠的坐标值；在触摸板上触摸时，触摸芯片按一定规律扫描纵横两个方向的每个电容感应电极的电容值，并做好相应的记录，根据电容值变化判断手指触摸的具体位置，从而计算位置的具体坐标。根据不同时间间隔的坐标，还可以判断手指移动的方向、速度等。
●体感/手势识别：通过加速度计采集动作数据建立多种动作模型，包括运动、睡眠、翻腕/降腕和敲击等动作；通过加速度计实时采集上述动作数据，并通过平滑滤波器对采集的数据进行平滑处理，去除噪声；分析滤波后的数据，对比目标动作数据模型，进行动作识别。动作识别完成，根据不同动作识别需要，计算后续数据，如卡路里消耗、进行里程数、运动模式、睡眠质量等运动相关信息。
●角度定位：利用两个光电二极管接收红外设备发送的红外线，红外线的强度越强，转换成的电信号强度也越大，对比两个光电二极管输出的电信号强度，根据查表法得出红外设备的角度信息，实现角度定位，算法已申请发明专利。
●多传感器数据融合：对多个传感器获得的信息进行协调、组合、互补以克服单个传感器的局限性，提高系统的有效性能；对温度传感器、加速度传感器、陀螺仪等传感器采集的数据进行数据自适应加权融合估值算法，计算人机交互方案中需要的数据。
●双麦克风降噪：采用两颗麦克风对语音信号进行采集和处理，增强语音信号，抑制平稳噪声(如白噪声，风噪和汽车运行时的环境噪声等)和非平稳噪声(如非期望方向的语音、音乐和电视背景声等噪声等)。
●音频编解码：具有高度可配性，可根据应用需求，调节音质、延时和码流特征参数，实现无线音频的高音质、低延时和低码流。采用多媒体加速指令，有效降低算法复杂度，显著提高算法在处理器运算效率。基于CK804处理器的WN804XX芯片可以运行不同配置的音频编解码算法，满足不同无线音频应用需求。
●无线传输协议栈：支持BLE5.0等无线传输协议，可为智能家居、智能遥控器、无线音频系统等提供低成本可编程的完整解决方案。
仍以外部设备为智能主机为例，集成远场拾音及充电的装置中的语音输入模块进行远场拾音，微处理器对语音输入模块采集到的声音信号进行处理，主机接口将微处理器处理后的声音信号传输至智能主机，智能主机实现语音识别及交互。
若装置位于车载环境，外部蓝牙设备为车载多媒体终端上的蓝牙车载音箱。
微处理器，用于通过主机接口获取外部设备的音频数据，和/或，通过FM模块获取调频广播的音频数据。
微处理器，用于对音频数据进行回声消除处理，提取参考信号，将处理后的音频数据通过蓝牙模块发送给车载音箱播放。
语音输入模块，用于拾取用户的声音信号，并将声音信号传输至微处理器。
微处理器，用于根据参考信号对声音信号进行回声消除处理，得到降噪的声音信号，对降噪的声音信号进行识别，确认是否跟预存唤醒词匹配，当匹配到预存唤醒词时，通过主机接口向外部设备发送唤醒指令，以调起外部设备的语音助手，并通过主机接口向外部设备发送降噪的声音信号，实现与外部设备进行语音交互。当未匹配到预存唤醒词时，不通过主机接口向外部设备发送数据，以确保用户隐私，降低外部设备的处理开销，降低功耗。
具体的，如图5所示，当用户在播放音乐时，
1)智能主机(如手机)通过主机接口连接到集成远场拾音及充电的装置，音频信号输入到微处理器，微处理器提取回声消除所需参考信号，同时，将音频信号通过蓝牙模块发送给车载多媒体播放器进行播放。语音输入模块拾取用户的声音信号输入到微处理器；
2)微处理器利用参考信号对拾取的声音信号进行回声消除等技术处理，获得干净的语音信号。本地语音识别引擎对语音进行识别，确认是否跟预存指令匹配；
3)当识别到预置唤醒词时，发送唤醒指令到外部设备调起语音助手，并通过USB接口向智能主机发送降噪过的语音信号，实现与智能主机的语音交互；
4)没有识别到唤醒词时，语音信号不通过接口发送给主机，确保用户隐私，同时也降低智能主机的处理开销，间接降低功耗。
如图6所示，当用户在收听广播时：
1)智能主机通过主机接口连接到集成远场拾音及充电的装置，集成远场拾音及充电的装置通过FM模块接收音频信号并输入到微处理器，微处理器提取回声消除所需参考信号，同时，将音频信号通过蓝牙模块发送给车载多媒体播放器进行播放。语音输入模块拾取用户的声音 信号输入到微处理器；
2)微处理器利用参考信号对拾取的声音信号进行回声消除等技术处理，获得干净的语音信号。本地语音识别引擎对语音进行识别，确认是否跟预存指令匹配；
3)当识别到预置唤醒词时，发送唤醒指令到外部设备调起语音助手，并通过USB接口向智能主机发送降噪过的语音信号，实现与智能主机的语音交互；
4)没有识别到唤醒词时，语音输入模块拾取的声音信号不通过接口发送给智能主机，确保用户隐私，同时也降低智能主机的处理开销，间接降低功耗。
本发明的另一有益效果在于：所述电源模块包括电源管理芯片、工作指示灯和开关，所述电源模块为所述微处理器、语音输入模块供电，所述电源模块能够为所述智能设备终端充电，即用户能够将所述集成远场拾音的装置作为一种充电线，为自己携带的设备终端充电，并且在充电时提供与终端设备的语音交互操作，确保长时间行车时设备有足够电量。
本发明提供的集成远场拾音及充电的装置针对车载环境语音操作技术难点，集成远场拾音、本地语音识别、蓝牙音频播放、FM音频播放及充电，结构轻巧，操作方便，远场拾音，环境噪声适应力强，本地语音识别加关键词唤醒确保隐私，同时又可用于充电，确保外部设备在长时间车载场景下能持续使用。
有益效果：
装置包括：该装置包括：语音输入模块、微处理器、主机接口以及电源模块；主机接口与电源模块连接，以及，与微处理器连接；电源模块与微处理器连接，以及，与语音输入模块连接；微处理器与语音输入模块连接；语音输入模块，用于获取远距离的声音信号；微处理器，用于对语音输入模块获取的声音信号进行处理；主机接口，用于将微处理器处理后的声音信号传输至与装置连接的外部设备；电源模块，用于为装置供电，以及，通过主机接口为与装置连接的外部设备供电。本装置结构轻巧，操作方便，远场拾音，抗干扰能力强，同时可用于充电，方便用户与外部设备进行语音交互。

Claims (10)

  1. 一种集成远场拾音及充电的装置，其特征在于，所述装置包括：语音输入模块、微处理器、主机接口、通信模块以及电源模块；
    所述主机接口与所述电源模块连接，以及，与所述微处理器连接；
    所述电源模块与所述微处理器连接，以及，与所述语音输入模块连接；
    所述微处理器与所述语音输入模块连接；
    所述通信模块与所述微处理器连接；
    所述语音输入模块，用于获取远距离的声音信号；
    所述微处理器，用于对所述语音输入模块获取的声音信号进行处理；
    所述主机接口，用于将所述微处理器处理后的声音信号传输至与所述装置连接的外部设备；
    所述电源模块，用于为所述装置供电，以及，通过所述主机接口为与所述装置连接的外部设备供电。
  2. 根据权利要求1所述的装置，其特征在于，所述装置还包括如下的一种或多种：输出模块，输入模块；
    所述输出模块与所述微处理器连接；
    所述输入模块与所述微处理器连接。
  3. 根据权利要求1所述的装置，其特征在于，所述通信模块包括如下的一种或多种：蓝牙模块，FM模块；
    所述蓝牙模块与所述微处理器连接；
    所述FM模块与所述微处理器连接；
    所述蓝牙模块，用于将所述微处理器得到的数据输至与所述蓝牙模块连接的外部蓝牙设备；
    所述FM模块，用于接收调频广播；
    若所述装置位于车载环境，所述外部蓝牙设备为车载多媒体终端上的蓝牙车载音箱；
    所述微处理器，用于通过所述主机接口获取所述外部设备的音频数据，和/或，通过所述FM模块获取调频广播的音频数据；
    所述微处理器，用于对所述音频数据进行回声消除处理，提取参考信号，将处理后的音频数据通过所述蓝牙模块发送给车载音箱播放；
    所述语音输入模块，用于拾取用户的声音信号，并将所述声音信号传输至所述微处理器，可以是一个或者两个高灵敏度麦克风；
    所述微处理器，用于根据所述参考信号对所述声音信号进行回声消除处理，得到降噪的声音信号，对降噪的声音信号进行识别，确认是否跟预存唤醒词匹配，当匹配到预存唤醒词时，通过所述主机接口向所述外部设备发送唤醒指令，以调起外部设备的语音助手，并通过所述主机接口向所述外部设备发送降噪的声音信号，实现与所述外部设备进行语音交互；当未匹配到预存唤醒词时，不通过所述主机接口向所述外部设备发送数据，以确保用户隐私， 降低所述外部设备的处理开销，降低功耗。
  4. 根据权利要求2所述的装置，其特征在于，所述输出模块为喇叭，所述喇叭与所述微处理器连接；所述喇叭用于播放所述微处理器处理后的声音信号；
    或者，
    所述输出模块为音频功放和喇叭，所述音频功放与所述微处理器连接，所述喇叭与所述音频功放连接；所述音频功放用于对所述微处理器处理后的声音信号进行功率放大，所述喇叭用于播放所述音频功放进行功率放大后的声音信号。
  5. 根据权利要求2所述的装置，其特征在于，所述输入模块为按键、红外感应器，其用于在无法进行本地关键词唤醒的情况下手动触发语音识别指令。
  6. 根据权利要求1至5任一权利要求所述的装置，其特征在于，所述主机接口为以下的一种或多种：USB－TYPE－C接口、MICRO－USB接口、APPLE LIGHTNING接口。
  7. 根据权利要求1至5任一权利要求所述的装置，其特征在于，所述对所述语音输入模块获取的声音信号进行处理，包括：
    对所述语音输入模块获取的声音信号进行降噪、去混响、回声消除、语音增强、关键词识别处理。
  8. 根据权利要求1至5任一权利要求所述的装置，其特征在于，所述微处理器集成Audio codec IP核、电源管理模块，立体声音频编解码器IP。
  9. 根据权力要求1至5任一权利要求所述的装置，在车载播放音乐环境下的工作流程为：
    1)智能主机通过主机接口连接到集成远场拾音及充电的装置，音频信号输入到微处理器，微处理器提取回声消除所需参考信号，同时，将音频信号通过蓝牙模块发送给车载多媒体播放器进行播放。语音输入模块拾取用户的声音信号输入到微处理器；
    2)微处理器利用参考信号对拾取的声音信号进行回声消除等技术处理，获得干净的语音信号。本地语音识别引擎对语音进行识别，确认是否跟预存指令匹配；
    3)当识别到预置唤醒词时，发送唤醒指令到外部设备调起语音助手，并通过USB接口向智能主机发送降噪过的语音信号，实现与智能主机的语音交互；
    4)没有识别到唤醒词时，语音信号不通过接口发送给主机，确保用户隐私，同时也降低智能主机的处理开销，间接降低功耗。
  10. 根据权力要求1至5任一权利要求所述的装置，在车载收听广播环境下的工作流程为：
    1)智能主机通过主机接口连接到集成远场拾音及充电的装置，集成远场拾音及充电的装置通过FM模块接收音频信号并输入到微处理器，微处理器提取回声消除所需参考信号，同时，将音频信号通过蓝牙模块发送给车载多媒体播放器进行播放。语音输入模块拾取用户的声音信号输入到微处理器；
    2)微处理器利用参考信号对拾取的声音信号进行回声消除等技术处理，获得干净的语音信号。本地语音识别引擎对语音进行识别，确认是否跟预存指令匹配；
    3)当识别到预置唤醒词时，发送唤醒指令到外部设备调起语音助手，并通过USB接口向智能主机发送降噪过的语音信号，实现与智能主机的语音交互；
    4)没有识别到唤醒词时，语音输入模块拾取的声音信号不通过接口发送给智能主机，确 保用户隐私，同时也降低智能主机的处理开销，间接降低功耗。
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CN207720392U (zh) * 2017-12-15 2018-08-10 北京云驾科技有限公司 一种语音降噪蓝牙智能车充杯
CN108859992A (zh) * 2018-06-29 2018-11-23 上海与德通讯技术有限公司 智能车载支架

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