CN113823310A - Voice interruption wake-up circuit applied to tablet computer - Google Patents
Voice interruption wake-up circuit applied to tablet computer Download PDFInfo
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4418—Suspend and resume; Hibernate and awake
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/20—Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech
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- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/223—Execution procedure of a spoken command
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- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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Abstract
The application provides a speech interruption awakening circuit applied to a tablet computer, which comprises an application processor, a plurality of digital power amplifiers, a digital signal processor, speech input equipment and a plurality of loudspeakers connected with the digital power amplifiers in a one-to-one correspondence mode. According to the voice interrupt awakening circuit, the digital signal processor obtains voice data signals of different sound channels from the at least two digital power amplifiers to serve as echo reference signals, acoustic echo elimination processing is carried out on the received voice awakening signals sent by the voice input device, and due to the fact that the signals obtained from the digital power amplifiers are digital signals, a filter circuit and an analog-to-digital converter do not need to be arranged in the circuit, and circuit design is simplified. In addition, the signal obtained from the digital power amplifier is not easily interfered by noise, so that the accuracy of acoustic echo cancellation based on the signal is high, the effect of voice interruption awakening can be improved, and the user experience is improved.
Description
Technical Field
The application relates to the technical field of electronic circuits, in particular to a voice interruption wake-up circuit applied to a tablet personal computer.
Background
With the development of electronic technology, the functions of various electronic devices are more and more improved, wherein the voice wake-up function of the tablet personal computer brings convenience to the daily life of people. One of the keys of the voice wake-up function of the tablet computer is voice interrupt wake-up, which means that the device receives a voice wake-up instruction sent by a user during the voice playing process and executes corresponding processing based on the voice wake-up instruction. The voice interruption awakening is realized by a voice interruption awakening circuit, and the key point of the voice interruption awakening circuit is that acoustic echo cancellation is carried out on a voice awakening instruction sent by a user.
At present, a common voice interrupt wake-up circuit applied to a tablet computer generally collects a voice analog signal being played from a speaker, then filters the collected voice analog signal through a Resistance Capacitance (RC) filter circuit, sends the filtered voice analog signal to an analog-to-digital converter to be converted into a voice digital signal, and then uses the converted voice digital signal as an echo reference signal to perform acoustic echo cancellation on a voice wake-up instruction sent by a user.
However, the above-mentioned circuit design for waking up by voice interruption is complicated, and the voice analog signal collected from the speaker is easily interfered by noise, so that the accuracy of acoustic echo cancellation based on the voice analog signal is not high, and further the effect of waking up by voice interruption is poor, which affects user experience.
Disclosure of Invention
The application provides a speech interruption awakening circuit applied to a tablet computer, which is used for improving the speech interruption awakening effect while simplifying circuit design and improving user experience.
In a first aspect, the present application provides a voice interrupt wake-up circuit for a tablet computer, including: the system comprises an application processor, a plurality of digital power amplifiers, a digital signal processor, voice input equipment and a plurality of loudspeakers which are connected with the digital power amplifiers in a one-to-one correspondence mode;
the application processor is connected with the plurality of digital power amplifiers and used for outputting voice signals and first control signals and second control signals to the plurality of digital power amplifiers; the voice signal comprises a voice data signal and a clock signal corresponding to the voice data signal; the voice data signals comprise voice data signals of a left channel and voice data signals of a right channel; the first control signal is used for controlling the digital power amplifier to receive the voice data signal of the left channel output by the application processor; the second control signal is used for controlling the digital power amplifier to receive the voice data signal of the right channel output by the application processor;
the digital power amplifiers are used for receiving the voice signals output by the application processor and driving a loudspeaker connected with the digital power amplifiers to broadcast voice data signals in the voice signals; the voice data signal received by each digital power amplifier is one of the voice data signal of the left channel and the voice data signal of the right channel; each digital power amplifier comprises two analog data acquisition interfaces; the analog data acquisition interface of each digital power amplifier is connected with the ground wire or the power supply of the digital power amplifier where the analog data acquisition interface is located, and the connection modes of the two analog data acquisition interfaces of different digital power amplifiers are different, so that different digital power amplifier addresses are generated, and the application processor outputs the first control signal or the second control signal based on the different digital power amplifier addresses;
at least two digital power amplifiers in the plurality of digital power amplifiers are connected with the digital signal processor and used for sending the received voice data signals output by the application processor to the digital signal processor; wherein the channels of the voice data signals received by the at least two digital power amplifiers are different;
the voice input device is connected with the digital signal processor and used for receiving a voice awakening instruction sent by a user, converting the received voice awakening instruction into a voice awakening signal and sending the voice awakening signal to the digital signal processor;
the digital signal processor is connected with the application processor and is used for receiving a clock signal corresponding to the voice data signal output by the application processor, receiving the clock signal corresponding to the voice data signal output by the application processor and using the voice data signals sent by the at least two digital power amplifiers as echo reference signals, performing acoustic echo cancellation processing on the received voice wake-up signal sent by the voice input device, and sending the processed voice wake-up signal to the application processor so that the application processor executes corresponding processing according to the processed voice wake-up signal.
Further, as for the circuit described above, the number of the digital power amplifiers is four, and the digital power amplifiers include a first digital power amplifier, a second digital power amplifier, a third digital power amplifier and a fourth digital power amplifier;
the first digital power amplifier and the third digital power amplifier are connected with the digital signal processor and used for sending the received voice data signal output by the application processor to the digital signal processor; the voice data signals received by the first digital power amplifier and the third digital power amplifier have different sound channels.
Further, in the circuit as described above, each digital power amplifier includes a first analog data acquisition interface and a second analog data acquisition interface;
the first analog data acquisition interface and the second analog data acquisition interface of the first digital power amplifier are both connected with the ground wire of the first digital power amplifier to generate a first digital power amplifier address;
a first analog data acquisition interface of the second digital power amplifier is connected with a ground wire of the second digital power amplifier, and a second analog data acquisition interface is connected with a power supply of the second digital power amplifier to generate a second digital power amplifier address;
a first analog data acquisition interface of the third digital power amplifier is connected with a power supply of the third digital power amplifier, and a second analog data acquisition interface is connected with a ground wire of the third digital power amplifier to generate a third digital power amplifier address;
and the first analog data acquisition interface and the second analog data acquisition interface of the fourth digital power amplifier are both connected with a power supply of the fourth digital power amplifier to generate a fourth digital power amplifier address.
Further, the circuit as described above, in which the channels of the voice data signals received by the first digital power amplifier and the third digital power amplifier are different, includes:
when the tablet computer is not rotated, the application processor outputs the first control signal to the first digital power amplifier and the second digital power amplifier based on the first digital power amplifier address and the second digital power amplifier address, and outputs the second control signal to the third digital power amplifier and the fourth digital power amplifier based on the third digital power amplifier address and the fourth digital power amplifier address, so that the first digital power amplifier and the second digital power amplifier receive the voice data signal of the left channel output by the application processor under the control of the first control signal, the third digital power amplifier and the fourth digital power amplifier receive the voice data signal of the right channel output by the application processor under the control of the second control signal;
when the tablet computer rotates 90 degrees clockwise, the application processor outputs a first control signal to the second digital power amplifier and the third digital power amplifier based on the second digital power amplifier address and the third digital power amplifier address, and outputting a second control signal to the first digital power amplifier and the fourth digital power amplifier based on the first digital power amplifier address and the fourth digital power amplifier address, so that the second digital power amplifier and the third digital power amplifier receive the voice data signal of the left channel output by the application processor under the control of the first control signal, the first digital power amplifier and the fourth digital power amplifier receive the voice data signal of the right channel output by the application processor under the control of the second control signal;
when the tablet computer rotates 180 degrees, the application processor outputs a first control signal to the third digital power amplifier and the fourth digital power amplifier based on the third digital power amplifier address and the fourth digital power amplifier address, and outputting a second control signal to the first digital power amplifier and the second digital power amplifier based on the first digital power amplifier address and the second digital power amplifier address, so that the third digital power amplifier and the fourth digital power amplifier receive the voice data signal of the left channel output by the application processor under the control of the first control signal, the first digital power amplifier and the second digital power amplifier receive the voice data signal of the right channel output by the application processor under the control of the second control signal;
when the tablet computer rotates 90 degrees counterclockwise, the application processor outputs a first control signal to the first digital power amplifier and the fourth digital power amplifier based on the first digital power amplifier address and the fourth digital power amplifier address, and outputting a second control signal to the second digital power amplifier and the third digital power amplifier based on the second digital power amplifier address and the third digital power amplifier address, so that the first digital power amplifier and the fourth digital power amplifier receive the voice data signal of the left channel output by the application processor under the control of the first control signal, and the second digital power amplifier and the third digital power amplifier receive the voice data signal of the right channel output by the application processor under the control of the second control signal.
Furthermore, in the circuit, four digital power amplifiers are connected with four loudspeakers in a one-to-one correspondence manner;
when the tablet computer is not rotated, the loudspeaker connected with the first digital power amplifier and the loudspeaker connected with the second digital power amplifier play the voice data signals of the left channel output by the application processor and received by the first digital power amplifier and the second digital power amplifier under the drive of the first digital power amplifier and the second digital power amplifier respectively, the loudspeaker connected with the third digital power amplifier and the loudspeaker connected with the fourth digital power amplifier play the voice data signals of the right channel output by the application processor and received by the third digital power amplifier and the fourth digital power amplifier under the drive of the third digital power amplifier and the fourth digital power amplifier respectively;
when the tablet personal computer rotates 90 degrees clockwise, the loudspeaker connected with the second digital power amplifier and the loudspeaker connected with the third digital power amplifier play the voice data signals of the left channel output by the application processor and received by the second digital power amplifier and the third digital power amplifier under the driving of the second digital power amplifier and the third digital power amplifier respectively, the loudspeaker connected with the first digital power amplifier and the loudspeaker connected with the fourth digital power amplifier are respectively driven by the first digital power amplifier and the fourth digital power amplifier to play the voice data signals of the right channel output by the application processor and received by the first digital power amplifier and the fourth digital power amplifier;
when the tablet personal computer rotates 180 degrees, the loudspeaker connected with the third digital power amplifier and the loudspeaker connected with the fourth digital power amplifier play the voice data signals of the left channel output by the application processor and received by the third digital power amplifier and the fourth digital power amplifier under the drive of the third digital power amplifier and the fourth digital power amplifier respectively, and the loudspeaker connected with the first digital power amplifier and the loudspeaker connected with the second digital power amplifier play the voice data signals of the right channel output by the application processor and received by the first digital power amplifier and the second digital power amplifier under the drive of the first digital power amplifier and the second digital power amplifier respectively;
when the tablet personal computer rotates 90 degrees anticlockwise, the loudspeaker connected with the first digital power amplifier and the loudspeaker connected with the fourth digital power amplifier are respectively driven by the first digital power amplifier and the fourth digital power amplifier to play the voice data signals of the left channel output by the application processor and received by the first digital power amplifier and the fourth digital power amplifier, and the loudspeaker connected with the second digital power amplifier and the loudspeaker connected with the third digital power amplifier are respectively driven by the second digital power amplifier and the third digital power amplifier to play the right-channel voice data signals received by the second digital power amplifier and the third digital power amplifier and output by the application processor.
Further, the circuit as described above, wherein the application processor is connected to the plurality of digital power amplifiers, comprising:
the application processor is connected with the plurality of digital power amplifiers through a voice signal data bus; the voice signal data bus comprises a clock signal line and a voice data signal line and is used for transmitting the voice data signal output by the application processor and the clock signal corresponding to the voice data signal to the plurality of digital power amplifiers.
Further, the circuit as described above, the digital signal processor connected to the application processor, comprising:
the digital signal processor is connected with the application processor through a clock signal line and a serial peripheral interface in the voice signal data bus; the clock signal line is used for transmitting a clock signal corresponding to the voice data signal output by the application processor to the digital signal processor; and the serial peripheral interface is used for sending the voice wake-up signal processed by the digital signal processor to the application processor.
Further, the circuit as described above, wherein the application processor is connected to the plurality of digital power amplifiers, further comprising:
the application processor is connected with the plurality of digital power amplifiers through a control bus; the control bus is used for respectively transmitting the first control signal and the second control signal output by the application processor to different digital power amplifiers based on different digital power amplifier addresses, so that the different digital power amplifiers receive the voice data signal of the left channel or the voice data signal of the right channel output by the application processor under the control of the control signal received by the different digital power amplifiers.
Further, the circuit as described above, the voice input device includes a microphone; the number of the microphones is one or more.
The application provides a speech interruption awakening circuit applied to a tablet computer, which comprises an application processor, a plurality of digital power amplifiers, a digital signal processor, speech input equipment and a plurality of loudspeakers connected with the digital power amplifiers in a one-to-one correspondence mode. At least two digital power amplifiers in the plurality of digital power amplifiers are used for sending the received voice data signals of different sound channels output by the application processor to the digital signal processor as echo reference signals so that the digital signal processor can perform acoustic echo cancellation processing on the received voice wake-up signals sent by the voice input equipment. That is to say, the voice interrupt wake-up circuit applied to the tablet computer provided by the application acquires voice data signals of different sound channels from at least two digital power amplifiers as echo reference signals, and performs acoustic echo cancellation processing on the voice wake-up signal. In addition, the signal obtained from the digital power amplifier is not easily interfered by noise, so that the accuracy of acoustic echo cancellation based on the signal is high, the effect of voice interruption awakening can be improved, and the user experience is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic diagram of a first structure of a voice interrupt wake-up circuit applied to a tablet computer according to an embodiment of the present disclosure;
fig. 2 is a second schematic structural diagram of a voice interrupt wake-up circuit applied to a tablet computer according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a third structure of a voice interrupt wake-up circuit applied to a tablet computer according to an embodiment of the present disclosure;
fig. 4 is a fourth structural diagram of a voice interrupt wake-up circuit applied to a tablet computer according to an embodiment of the present disclosure;
fig. 5 is a fifth structural diagram of a voice interrupt wake-up circuit applied to a tablet computer according to an embodiment of the present disclosure.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of a voice interrupt wake-up circuit applied to a tablet computer consistent with aspects of the present application.
One of the keys of the voice wake-up function of the tablet computer is voice interrupt wake-up, which means that the device receives a voice wake-up instruction sent by a user during the voice playing process and executes corresponding processing based on the voice wake-up instruction. The voice interruption awakening is realized by a voice interruption awakening circuit, and the key point of the voice interruption awakening circuit is that acoustic echo cancellation is carried out on a voice awakening instruction sent by a user.
At present, a common voice interrupt wake-up circuit applied to a tablet computer generally includes an application processor, a plurality of digital power amplifiers, a digital signal processor, a voice input device, an RC filter circuit, an analog-to-digital converter, and a plurality of speakers, where the RC filter circuit obtains voice analog signals played by the plurality of speakers connected to the plurality of digital power amplifiers, performs filtering processing on the voice analog signals, sends the filtered voice analog signals to the analog-to-digital converter, converts the filtered voice analog signals into voice digital signals, and the analog-to-digital converter sends the converted voice digital signals to the digital signal processor as echo reference signals, so that the digital signal processor performs acoustic echo cancellation on a voice wake-up instruction sent by a user and received from the voice input device.
However, the above-mentioned circuit design for waking up by voice interruption is complicated, and the voice analog signal collected from the speaker is easily interfered by noise, so that the accuracy of acoustic echo cancellation based on the voice analog signal is not high, and further the effect of waking up by voice interruption is poor, which affects user experience.
The application provides a voice interruption wake-up circuit applied to a tablet computer, and aims to solve the technical problems in the prior art.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
Example one
Fig. 1 is a first structural schematic diagram of a voice interrupt wake-up circuit applied to a tablet computer according to an embodiment of the present disclosure, and as shown in fig. 1, the voice interrupt wake-up circuit applied to the tablet computer according to the present disclosure includes: the device comprises an application processor 1, a plurality of digital power amplifiers 2, a digital signal processor 3, a voice input device 4 and a plurality of loudspeakers 5 which are connected with the digital power amplifiers 2 in a one-to-one correspondence mode.
In the present embodiment, the application processor 1 is used to output a speech signal. The voice signal may include a voice data signal and a clock signal corresponding to the voice data signal, and the voice data signal may include a left channel voice data signal and a right channel voice data signal. The Clock signals corresponding to the voice data signals may include a Bit Clock (BCK) signal and a Left and Right channel Clock (LRCK) signal, i.e., a frame Clock signal.
The digital power amplifiers 2 are connected with the application processor 1 and used for receiving the voice signals output by the application processor 1 and driving the loudspeaker 5 connected with the digital power amplifiers to play voice data signals in the voice signals. Wherein, the voice data signal received by each digital power amplifier 2 is one of a voice data signal of a left channel and a voice data signal of a right channel.
In an alternative implementation, on the basis of the first embodiment, a plurality of digital power amplifiers 2 may be connected to the application processor 1 via a voice signal data bus. The voice signal data bus includes, among other things, a clock signal line and a voice data signal line 62.
In the present embodiment, the clock signal line is used to transmit a clock signal corresponding to the voice data signal output from the application processor 1 to the plurality of digital power amplifiers 2, and accordingly, the voice data signal line 62 is used to transmit the voice data signal output from the application processor 1 to the plurality of digital power amplifiers 2.
Further, since the clock signal corresponding to the voice data signal may include a BCK signal and an LRCK signal, the clock signal line includes an LRCK signal line 611 and a BCK signal line 612, respectively.
At least two digital power amplifiers 2 of the plurality of digital power amplifiers 2 are connected to the digital signal processor 3 for transmitting the received voice data signal outputted from the application processor 1 to the digital signal processor 3. Wherein, at least two digital power amplifiers 2 connected with the digital signal processor 3 receive different sound channels of the voice data signals. That is, the voice data signal transmitted to the digital signal processor 3 includes a voice data signal of a left channel and a voice data signal of a right channel.
The voice input device 4 is connected to the digital signal processor 3, and is configured to receive a voice wake-up instruction sent by a user, convert the received voice wake-up instruction (sound signal) into a voice wake-up signal (electrical signal), and send the voice wake-up signal (electrical signal) to the digital signal processor 3.
The digital signal processor 3 is connected to the application processor 1, and is configured to receive a clock signal corresponding to the voice data signal output by the application processor 1, and use the received clock signal corresponding to the voice data signal output by the application processor 1 and the voice data signals sent by the at least two digital power amplifiers 2 as Echo reference signals, perform Acoustic Echo Cancellation (AEC) processing on the received voice wake-up signal sent by the voice input device 4, and send the processed voice wake-up signal to the application processor 1, so that the application processor 1 performs corresponding processing according to the processed voice wake-up signal.
In an alternative implementation, on the basis of the first embodiment, the digital signal processor 3 may be connected to the application processor 1 through a clock signal line in a voice signal data bus and a serial peripheral interface 7.
In this embodiment, the clock signal line is used to transmit a clock signal corresponding to the voice data signal output by the application processor 1 to the digital signal processor 3, and the serial peripheral interface 7 is used to transmit the voice wake-up signal processed by the digital signal processor 3 to the application processor 1.
In practical applications, in an example, a user is playing music using a tablet computer, and at this time, if the user wants to check weather conditions, the user sends a voice wake-up instruction, for example, "turn on weather forecast," and after receiving the voice wake-up instruction, the voice input device may convert the voice wake-up instruction into an electrical signal, that is, a voice wake-up signal, and send the electrical signal, that is, the voice wake-up signal, to the digital signal processor. At this time, a Digital Signal Processor (DSP) may obtain a voice data Signal of a left channel and a voice data Signal of a right channel of the current music from at least two Digital Power Amplifiers (PA), obtain a clock Signal corresponding to the voice data Signal from an Application Processor (AP), use the voice data signals of the left and right channels and the clock signals corresponding to the voice data signals as echo reference signals, perform acoustic echo cancellation Processing on the voice wake-up Signal, and finally send the processed voice wake-up Signal to the Application Processor, where the Application Processor may display a weather forecast on a screen of the tablet computer according to the processed voice wake-up Signal.
The voice interrupt wake-up circuit applied to the tablet computer provided by the embodiment comprises an application processor, a plurality of digital power amplifiers, a digital signal processor, a voice input device and a plurality of speakers which are connected with the digital power amplifiers in a one-to-one correspondence manner. At least two digital power amplifiers in the plurality of digital power amplifiers are used for sending the received voice data signals of different sound channels output by the application processor to the digital signal processor as echo reference signals so that the digital signal processor can perform acoustic echo cancellation processing on the received voice wake-up signals sent by the voice input equipment. That is to say, in the embodiment of the present application, the digital signal processor obtains the voice data signals of different channels from at least two digital power amplifiers as echo reference signals, and performs acoustic echo cancellation processing on the voice wake-up signal, and since the signals obtained from the digital power amplifiers are digital signals, there is no need to provide an RC filter circuit and an analog-to-digital converter in the circuit, which simplifies the circuit design. In addition, the signal obtained from the digital power amplifier is not easily interfered by noise, so that the accuracy of acoustic echo cancellation based on the signal is high, the effect of voice interruption awakening can be improved, and the user experience is improved.
Example two
Fig. 2 is a second schematic structural diagram of the voice interrupt wake-up circuit applied to the tablet computer according to the embodiment of the present application, and as shown in fig. 2, on the basis of the first embodiment, in the voice interrupt wake-up circuit applied to the tablet computer according to the embodiment of the present application, a plurality of digital power amplifiers 2 may also be connected to the application processor 1 through a control bus 8.
In the present embodiment, the application processor 1 is configured to output a first control signal and a second control signal. Wherein the first control signal is used to control the digital power amplifier 2 to receive the voice data signal of the left channel output by the application processor 1, and correspondingly, the second control signal is used to control the digital power amplifier 2 to receive the voice data signal of the right channel output by the application processor 1.
The control bus 8 is used for transmitting the first control signal and the second control signal output by the application processor 1 to different digital power amplifiers 2, so that the different digital power amplifiers 2 receive the voice data signal of the left channel or the voice data signal of the right channel output by the application processor 1 under the control of the control signal received by the different digital power amplifiers 2.
In practical applications, the application processor 1 may sequentially output the voice data signals of the left and right channels according to the clock signals of the left and right channels, and the application processor 1 may also transmit a first control signal and a second control signal to each digital power amplifier 2 through the control bus 8, where the first control signal and the second control signal may specifically be different register instructions. For each digital power amplifier 2, if the digital power amplifier 2 receives the first control signal output by the application processor 1, the digital power amplifier 2 may receive the voice data signal of the left channel output by the application processor 1 according to the first control signal, and correspondingly, if the digital power amplifier 2 receives the second control signal output by the application processor 1, the digital power amplifier 2 may receive the voice data signal of the right channel output by the application processor 1 according to the second control signal.
On the basis of the second embodiment, in an alternative implementation, each digital power amplifier 2 in the plurality of digital power amplifiers 2 includes two analog data acquisition interfaces.
In this embodiment, the analog data acquisition interface of each digital power amplifier 2 is connected to the ground line or the power supply of the digital power amplifier 2 where the analog data acquisition interface is located, and the connection modes of the two analog data acquisition interfaces of different digital power amplifiers 2 are different, so as to implement different digital power amplifier addresses, so that the application processor 1 outputs a first control signal or a second control signal based on the different digital power amplifier addresses, and the control bus 8 transmits the first control signal or the second control signal output by the application processor 1 to different digital power amplifiers 2 based on the different digital power amplifier addresses, respectively.
In practical application, each digital power amplifier 2 may implement different digital power amplifier addresses through different connection modes of two analog data acquisition interfaces, and the application processor 1 may output different control signals (a first control signal or a second control signal) to the different digital power amplifier addresses, and transmit the different control signals to different digital power amplifiers 2 through the control bus 8.
Fig. 3 is a schematic diagram of a third structure of the voice interrupt wake-up circuit applied to the tablet computer according to the embodiment of the present application, as shown in fig. 3, based on the second embodiment, the voice interrupt wake-up circuit applied to the tablet computer according to the embodiment of the present application, where the voice input device 4 includes a microphone.
In this embodiment, the number of the microphones may be one or more, and the number of the microphones is schematically illustrated as two in fig. 3.
The voice interrupt wake-up circuit applied to the tablet computer provided by the embodiment controls different digital power amplifiers to receive voice data signals of different channels through different control signals, so that it can be ensured that echo reference signals subsequently sent to the digital signal processor not only include voice data signals of left and right channels, and the accuracy of acoustic echo cancellation on the voice wake-up signals is further ensured.
EXAMPLE III
Fig. 4 is a schematic diagram of a fourth structure of the voice break wake-up circuit applied to the tablet computer according to the embodiment of the present application, and as shown in fig. 4, on the basis of the second embodiment, the number of the digital power amplifiers 2 of the voice break wake-up circuit applied to the tablet computer according to the embodiment of the present application is four, and the digital power amplifiers include a first digital power amplifier 21, a second digital power amplifier 22, a third digital power amplifier 23, and a fourth digital power amplifier 24.
In the present embodiment, the first digital power amplifier 21 and the third digital power amplifier 23 are connected to the digital signal processor 3, and are configured to transmit the received voice signal output by the application processor 1 to the digital signal processor 3. Wherein the channels of the voice data signals received by the first digital power amplifier 21 and the third digital power amplifier 23 are different.
Fig. 5 is a fifth structural schematic diagram of the voice interrupt wake-up circuit applied to the tablet computer according to the embodiment of the present application, and as shown in fig. 5, on the basis of the third embodiment, each digital power amplifier 2 of the voice interrupt wake-up circuit applied to the tablet computer according to the embodiment of the present application includes a first analog data acquisition interface 201 and a second analog data acquisition interface 202.
In this embodiment, the first analog data acquisition interface 201 and the second analog data acquisition interface 202 of the first digital power amplifier 21 are both connected to the ground line of the first digital power amplifier 21, and are used for implementing the first digital power amplifier address. The first analog data acquisition interface 201 of the second digital power amplifier 22 is connected to the ground line of the second digital power amplifier 22, and the second analog data acquisition interface 202 is connected to the power supply of the second digital power amplifier 22, so as to implement the address of the second digital power amplifier. The first analog data acquisition interface 201 of the third digital power amplifier 23 is connected to the power supply of the third digital power amplifier 23, and the second analog data acquisition interface 202 is connected to the ground line of the third digital power amplifier 23, so as to implement the address of the third digital power amplifier. The first analog data acquisition interface 201 and the second analog data acquisition interface 202 of the fourth digital power amplifier 24 are both connected to the power supply of the fourth digital power amplifier 24, and are used for implementing the address of the fourth digital power amplifier.
In practical application, the first analog data acquisition interface 201 and the second analog data acquisition interface 202 of the first digital power amplifier 21 are both connected to the ground line of the first digital power amplifier 21, that is, the address of the first digital power amplifier may be 00, the first analog data acquisition interface 201 of the second digital power amplifier 22 is connected to the ground line of the second digital power amplifier 22, the second analog data acquisition interface 202 is connected to the power supply of the second digital power amplifier 22, that is, the address of the second digital power amplifier may be 01, the first analog data acquisition interface 201 of the third digital power amplifier 23 is connected to the power supply of the third digital power amplifier 23, the second analog data acquisition interface 202 is connected to the ground line of the third digital power amplifier 23, that is, the address of the third digital power amplifier may be 10, and both the first analog data acquisition interface 201 and the second analog data acquisition interface 202 of the fourth digital power amplifier 24 are connected to the ground line of the first digital power amplifier 21 The power supply connection of the fourth digital power amplifier 24, i.e. the fourth digital power amplifier address, may be 11.
On the basis of the third embodiment, in an alternative implementation, the channels of the voice data signals received by the first digital power amplifier 21 and the third digital power amplifier 23 are different, and the method includes:
when the tablet computer is not rotated, the application processor 1 may output a first control signal to the first digital power amplifier 21 and the second digital power amplifier 22 based on the first digital power amplifier address (i.e., 00) and the second digital power amplifier address (i.e., 01), and outputs a second control signal to the third digital power amplifier 23 and the fourth digital power amplifier 24 based on the third digital power amplifier address (i.e., 10) and the fourth digital power amplifier address (i.e., 11), so that the first digital power amplifier 21 and the second digital power amplifier 22 receive the voice data signal of the left channel output by the application processor 1 under the control of the first control signal, and the third digital power amplifier 23 and the fourth digital power amplifier 24 receive the voice data signal of the right channel output by the application processor 1 under the control of the second control signal.
At this time, the voice data signal received by the first digital power amplifier 21 is a voice data signal of a left channel, and the voice data signal received by the third digital power amplifier 23 is a voice data signal of a right channel, that is, the channels of the voice data signals received by the first digital power amplifier 21 and the third digital power amplifier 23 are different.
When the tablet computer is rotated 90 degrees clockwise, the application processor 1 may output the first control signal to the second digital power amplifier 22 and the third digital power amplifier 23 based on the second digital power amplifier address (i.e., 01) and the third digital power amplifier address (i.e., 10), and outputs a second control signal to the first digital power amplifier 21 and the fourth digital power amplifier 24 based on the first digital power amplifier address (i.e., 00) and the fourth digital power amplifier address (i.e., 11), so that the second digital power amplifier 22 and the third digital power amplifier 23 receive the voice data signal of the left channel output by the application processor 1 under the control of the first control signal, and the first digital power amplifier 21 and the fourth digital power amplifier 24 receive the voice data signal of the right channel output by the application processor 1 under the control of the second control signal.
At this time, the voice data signal received by the first digital power amplifier 21 is a voice data signal of a right channel, and the voice data signal received by the third digital power amplifier 23 is a voice data signal of a left channel, that is, the channels of the voice data signals received by the first digital power amplifier 21 and the third digital power amplifier 23 are different.
When the tablet computer is rotated by 180 degrees, the application processor 1 may output a first control signal to the third digital power amplifier 23 and the fourth digital power amplifier 24 based on the third digital power amplifier address (i.e., 10) and the fourth digital power amplifier address (i.e., 11), and outputs a second control signal to the first digital power amplifier 21 and the second digital power amplifier 22 based on the first digital power amplifier address (i.e., 00) and the second digital power amplifier address (i.e., 01), so that the third digital power amplifier 23 and the fourth digital power amplifier 24 receive the voice data signal of the left channel output by the application processor 1 under the control of the first control signal, and the first digital power amplifier 21 and the second digital power amplifier 22 receive the voice data signal of the right channel output by the application processor 1 under the control of the second control signal.
At this time, the voice data signal received by the first digital power amplifier 21 is a voice data signal of a right channel, and the voice data signal received by the third digital power amplifier 23 is a voice data signal of a left channel, that is, the channels of the voice data signals received by the first digital power amplifier 21 and the third digital power amplifier 23 are different.
When the tablet computer is rotated 90 degrees counterclockwise, the application processor 1 may output a first control signal to the first digital power amplifier 21 and the fourth digital power amplifier 24 based on the first digital power amplifier address (i.e., 00) and the fourth digital power amplifier address (i.e., 11), and outputs a second control signal to the second digital power amplifier 22 and the third digital power amplifier 23 based on the second digital power amplifier address (i.e., 01) and the third digital power amplifier address (i.e., 10), so that the first digital power amplifier 21 and the fourth digital power amplifier 24 receive the voice data signal of the left channel output by the application processor 1 under the control of the first control signal, and the second digital power amplifier 22 and the third digital power amplifier 23 receive the voice data signal of the right channel output by the application processor 1 under the control of the second control signal.
At this time, the voice data signal received by the first digital power amplifier 21 is a voice data signal of a left channel, and the voice data signal received by the third digital power amplifier 23 is a voice data signal of a right channel, that is, the channels of the voice data signals received by the first digital power amplifier 21 and the third digital power amplifier 23 are different.
In practical application, whether the tablet personal computer rotates or not can be judged through the gravity sensor, and other suitable manners can also be used for judging, which is not limited in this embodiment.
On the basis of the third embodiment, in an optional implementation manner, in the voice interrupt wake-up circuit applied to the tablet computer provided in this embodiment, the four digital power amplifiers 2 are connected to the four speakers 5 in a one-to-one correspondence manner.
In this embodiment, when the tablet computer is not rotated, the speaker 5 connected to the first digital power amplifier 21 and the speaker 5 connected to the second digital power amplifier 22 play the voice data signals of the left channel output by the application processor 1 received by the first digital power amplifier 21 and the second digital power amplifier 22 under the driving of the first digital power amplifier 21 and the second digital power amplifier 22, respectively, and the speaker 5 connected to the third digital power amplifier 23 and the speaker 5 connected to the fourth digital power amplifier 24 play the voice data signals of the right channel output by the application processor 1 received by the third digital power amplifier 23 and the fourth digital power amplifier 24 under the driving of the third digital power amplifier 23 and the fourth digital power amplifier 24, respectively.
When the tablet computer rotates 90 degrees clockwise, the speaker 5 connected to the second digital power amplifier 22 and the speaker 5 connected to the third digital power amplifier 23 play the voice data signal of the left channel output by the application processor 1 received by the second digital power amplifier 22 and the third digital power amplifier 23 under the driving of the second digital power amplifier 22 and the third digital power amplifier 23, respectively, and the speaker 5 connected to the first digital power amplifier 21 and the speaker 5 connected to the fourth digital power amplifier 24 play the voice data signal of the right channel output by the application processor 1 received by the first digital power amplifier 21 and the fourth digital power amplifier 24 under the driving of the first digital power amplifier 21 and the fourth digital power amplifier 24, respectively.
When the tablet computer rotates 180 degrees, the speaker 5 connected to the third digital power amplifier 23 and the speaker 5 connected to the fourth digital power amplifier 24 play the left channel voice data signal output by the application processor 1 and received by the third digital power amplifier 23 and the fourth digital power amplifier 24 under the driving of the third digital power amplifier 23 and the fourth digital power amplifier 24, respectively, and the speaker 5 connected to the first digital power amplifier 21 and the speaker 5 connected to the second digital power amplifier 22 play the right channel voice data signal output by the application processor 1 and received by the first digital power amplifier 21 and the second digital power amplifier 22 under the driving of the first digital power amplifier 21 and the second digital power amplifier 22, respectively.
When the tablet computer rotates 90 degrees counterclockwise, the speaker 5 connected to the first digital power amplifier 21 and the speaker 5 connected to the fourth digital power amplifier 24 play the left channel voice data signal output by the application processor 1 and received by the first digital power amplifier 21 and the fourth digital power amplifier 24 under the driving of the first digital power amplifier 21 and the fourth digital power amplifier 24, respectively, and the speaker 5 connected to the second digital power amplifier 22 and the speaker 5 connected to the third digital power amplifier 23 play the right channel voice data signal output by the application processor 1 and received by the second digital power amplifier 22 and the third digital power amplifier 23 under the driving of the second digital power amplifier 22 and the third digital power amplifier 23, respectively.
The voice interruption awakening circuit applied to the tablet computer provided by the embodiment plays voice data signals of different sound channels through the four speakers respectively, so that the tablet computer can have a balanced stereo effect while the voice interruption awakening function of the tablet computer is achieved, and user experience is improved.
In the embodiments provided in the present application, it should be understood that the disclosed voice interrupt wake-up circuit applied to the tablet pc may be implemented in other ways. For example, the above-described embodiment of the voice interrupt wake-up circuit applied to a tablet computer is merely illustrative, for example, the division of modules is only one logical function division, and other division manners may be available in actual implementation, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection that interrupts the wake-up circuit or module by a voice applied to the tablet computer through some interfaces, and may be in an electrical, mechanical or other form.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.
Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the application. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (9)
1. A speech interruption wake-up circuit applied to a tablet computer is characterized by comprising: the system comprises an application processor, a plurality of digital power amplifiers, a digital signal processor, voice input equipment and a plurality of loudspeakers which are connected with the digital power amplifiers in a one-to-one correspondence mode;
the application processor is connected with the plurality of digital power amplifiers and used for outputting voice signals and first control signals and second control signals to the plurality of digital power amplifiers; the voice signal comprises a voice data signal and a clock signal corresponding to the voice data signal; the voice data signals comprise voice data signals of a left channel and voice data signals of a right channel; the first control signal is used for controlling the digital power amplifier to receive the voice data signal of the left channel output by the application processor; the second control signal is used for controlling the digital power amplifier to receive the voice data signal of the right channel output by the application processor;
the digital power amplifiers are used for receiving the voice signals output by the application processor and driving a loudspeaker connected with the digital power amplifiers to broadcast voice data signals in the voice signals; the voice data signal received by each digital power amplifier is one of the voice data signal of the left channel and the voice data signal of the right channel; each digital power amplifier comprises two analog data acquisition interfaces; the analog data acquisition interface of each digital power amplifier is connected with the ground wire or the power supply of the digital power amplifier where the analog data acquisition interface is located, and the connection modes of the two analog data acquisition interfaces of different digital power amplifiers are different, so that different digital power amplifier addresses are generated, and the application processor outputs the first control signal or the second control signal based on the different digital power amplifier addresses;
at least two digital power amplifiers in the plurality of digital power amplifiers are connected with the digital signal processor and used for sending the received voice data signals output by the application processor to the digital signal processor; wherein the channels of the voice data signals received by the at least two digital power amplifiers are different;
the voice input device is connected with the digital signal processor and used for receiving a voice awakening instruction sent by a user, converting the received voice awakening instruction into a voice awakening signal and sending the voice awakening signal to the digital signal processor;
the digital signal processor is connected with the application processor and is used for receiving a clock signal corresponding to the voice data signal output by the application processor, receiving the clock signal corresponding to the voice data signal output by the application processor and using the voice data signals sent by the at least two digital power amplifiers as echo reference signals, performing acoustic echo cancellation processing on the received voice wake-up signal sent by the voice input device, and sending the processed voice wake-up signal to the application processor so that the application processor executes corresponding processing according to the processed voice wake-up signal.
2. The circuit of claim 1, wherein the number of the digital power amplifiers is four, and the digital power amplifiers comprise a first digital power amplifier, a second digital power amplifier, a third digital power amplifier and a fourth digital power amplifier;
the first digital power amplifier and the third digital power amplifier are connected with the digital signal processor and used for sending the received voice data signal output by the application processor to the digital signal processor; the voice data signals received by the first digital power amplifier and the third digital power amplifier have different sound channels.
3. The circuit of claim 2, wherein each digital power amplifier comprises a first analog data acquisition interface and a second analog data acquisition interface;
the first analog data acquisition interface and the second analog data acquisition interface of the first digital power amplifier are both connected with the ground wire of the first digital power amplifier to generate a first digital power amplifier address;
a first analog data acquisition interface of the second digital power amplifier is connected with a ground wire of the second digital power amplifier, and a second analog data acquisition interface is connected with a power supply of the second digital power amplifier to generate a second digital power amplifier address;
a first analog data acquisition interface of the third digital power amplifier is connected with a power supply of the third digital power amplifier, and a second analog data acquisition interface is connected with a ground wire of the third digital power amplifier to generate a third digital power amplifier address;
and the first analog data acquisition interface and the second analog data acquisition interface of the fourth digital power amplifier are both connected with a power supply of the fourth digital power amplifier to generate a fourth digital power amplifier address.
4. The circuit of claim 3, wherein the voice data signals received by the first digital power amplifier and the third digital power amplifier have different channels, comprising:
when the tablet computer is not rotated, the application processor outputs the first control signal to the first digital power amplifier and the second digital power amplifier based on the first digital power amplifier address and the second digital power amplifier address, and outputs the second control signal to the third digital power amplifier and the fourth digital power amplifier based on the third digital power amplifier address and the fourth digital power amplifier address, so that the first digital power amplifier and the second digital power amplifier receive the voice data signal of the left channel output by the application processor under the control of the first control signal, the third digital power amplifier and the fourth digital power amplifier receive the voice data signal of the right channel output by the application processor under the control of the second control signal;
when the tablet computer rotates 90 degrees clockwise, the application processor outputs a first control signal to the second digital power amplifier and the third digital power amplifier based on the second digital power amplifier address and the third digital power amplifier address, and outputting a second control signal to the first digital power amplifier and the fourth digital power amplifier based on the first digital power amplifier address and the fourth digital power amplifier address, so that the second digital power amplifier and the third digital power amplifier receive the voice data signal of the left channel output by the application processor under the control of the first control signal, the first digital power amplifier and the fourth digital power amplifier receive the voice data signal of the right channel output by the application processor under the control of the second control signal;
when the tablet computer rotates 180 degrees, the application processor outputs a first control signal to the third digital power amplifier and the fourth digital power amplifier based on the third digital power amplifier address and the fourth digital power amplifier address, and outputting a second control signal to the first digital power amplifier and the second digital power amplifier based on the first digital power amplifier address and the second digital power amplifier address, so that the third digital power amplifier and the fourth digital power amplifier receive the voice data signal of the left channel output by the application processor under the control of the first control signal, the first digital power amplifier and the second digital power amplifier receive the voice data signal of the right channel output by the application processor under the control of the second control signal;
when the tablet computer rotates 90 degrees counterclockwise, the application processor outputs a first control signal to the first digital power amplifier and the fourth digital power amplifier based on the first digital power amplifier address and the fourth digital power amplifier address, and outputting a second control signal to the second digital power amplifier and the third digital power amplifier based on the second digital power amplifier address and the third digital power amplifier address, so that the first digital power amplifier and the fourth digital power amplifier receive the voice data signal of the left channel output by the application processor under the control of the first control signal, and the second digital power amplifier and the third digital power amplifier receive the voice data signal of the right channel output by the application processor under the control of the second control signal.
5. The circuit of claim 4, wherein four digital power amplifiers are connected with four speakers in a one-to-one correspondence;
when the tablet computer is not rotated, the loudspeaker connected with the first digital power amplifier and the loudspeaker connected with the second digital power amplifier play the voice data signals of the left channel output by the application processor and received by the first digital power amplifier and the second digital power amplifier under the drive of the first digital power amplifier and the second digital power amplifier respectively, the loudspeaker connected with the third digital power amplifier and the loudspeaker connected with the fourth digital power amplifier play the voice data signals of the right channel output by the application processor and received by the third digital power amplifier and the fourth digital power amplifier under the drive of the third digital power amplifier and the fourth digital power amplifier respectively;
when the tablet personal computer rotates 90 degrees clockwise, the loudspeaker connected with the second digital power amplifier and the loudspeaker connected with the third digital power amplifier play the voice data signals of the left channel output by the application processor and received by the second digital power amplifier and the third digital power amplifier under the driving of the second digital power amplifier and the third digital power amplifier respectively, the loudspeaker connected with the first digital power amplifier and the loudspeaker connected with the fourth digital power amplifier are respectively driven by the first digital power amplifier and the fourth digital power amplifier to play the voice data signals of the right channel output by the application processor and received by the first digital power amplifier and the fourth digital power amplifier;
when the tablet personal computer rotates 180 degrees, the loudspeaker connected with the third digital power amplifier and the loudspeaker connected with the fourth digital power amplifier play the voice data signals of the left channel output by the application processor and received by the third digital power amplifier and the fourth digital power amplifier under the drive of the third digital power amplifier and the fourth digital power amplifier respectively, and the loudspeaker connected with the first digital power amplifier and the loudspeaker connected with the second digital power amplifier play the voice data signals of the right channel output by the application processor and received by the first digital power amplifier and the second digital power amplifier under the drive of the first digital power amplifier and the second digital power amplifier respectively;
when the tablet personal computer rotates 90 degrees anticlockwise, the loudspeaker connected with the first digital power amplifier and the loudspeaker connected with the fourth digital power amplifier are respectively driven by the first digital power amplifier and the fourth digital power amplifier to play the voice data signals of the left channel output by the application processor and received by the first digital power amplifier and the fourth digital power amplifier, and the loudspeaker connected with the second digital power amplifier and the loudspeaker connected with the third digital power amplifier are respectively driven by the second digital power amplifier and the third digital power amplifier to play the right-channel voice data signals received by the second digital power amplifier and the third digital power amplifier and output by the application processor.
6. The circuit of claim 1, wherein the application processor is coupled to the plurality of digital power amplifiers, and comprises:
the application processor is connected with the plurality of digital power amplifiers through a voice signal data bus; the voice signal data bus comprises a clock signal line and a voice data signal line and is used for transmitting the voice data signal output by the application processor and the clock signal corresponding to the voice data signal to the plurality of digital power amplifiers.
7. The circuit of claim 6, wherein the digital signal processor is coupled to the application processor and comprises:
the digital signal processor is connected with the application processor through a clock signal line and a serial peripheral interface in the voice signal data bus; the clock signal line is used for transmitting a clock signal corresponding to the voice data signal output by the application processor to the digital signal processor; and the serial peripheral interface is used for sending the voice wake-up signal processed by the digital signal processor to the application processor.
8. The circuit of claim 7, wherein the application processor is coupled to the plurality of digital power amplifiers, further comprising:
the application processor is connected with the plurality of digital power amplifiers through a control bus; the control bus is used for respectively transmitting the first control signal and the second control signal output by the application processor to different digital power amplifiers based on different digital power amplifier addresses, so that the different digital power amplifiers receive the voice data signal of the left channel or the voice data signal of the right channel output by the application processor under the control of the control signal received by the different digital power amplifiers.
9. The circuit of claim 8, wherein the voice input device comprises a microphone; the number of the microphones is one or more.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040176955A1 (en) * | 2002-12-20 | 2004-09-09 | Farinelli Robert P. | Method and system for digitally controlling a multi-channel audio amplifier |
| JP2008124848A (en) * | 2006-11-14 | 2008-05-29 | Sony Corp | Audio reproduction device |
| CN106817667A (en) * | 2016-11-30 | 2017-06-09 | 努比亚技术有限公司 | One kind realizes stereosonic method, device and mobile terminal |
| CN106910510A (en) * | 2017-02-16 | 2017-06-30 | 智车优行科技（北京）有限公司 | Vehicle-mounted power amplifying device, vehicle and its audio play handling method |
| CN110223707A (en) * | 2019-07-10 | 2019-09-10 | 青岛海信电器股份有限公司 | Display device |
| CN110349582A (en) * | 2019-07-10 | 2019-10-18 | 青岛海信电器股份有限公司 | Display device and far field speech processing circuit |
| CN111294438A (en) * | 2020-01-22 | 2020-06-16 | 华为技术有限公司 | Method and terminal for realizing stereo output |
| CN212365491U (en) * | 2020-04-30 | 2021-01-15 | 深圳市海克莱特科技发展有限公司 | 86 panel mainboard that possesses interactive function of pronunciation |
| CN112885365A (en) * | 2021-01-08 | 2021-06-01 | 上海锐承通讯技术有限公司 | Echo eliminating device and vehicle-mounted intelligent terminal |
| CN112992171A (en) * | 2021-02-09 | 2021-06-18 | 海信视像科技股份有限公司 | Display device and control method for eliminating echo received by microphone |
| CN213586241U (en) * | 2020-11-30 | 2021-06-29 | 海信视像科技股份有限公司 | Far-field voice interaction device and electronic equipment |
| CN113096681A (en) * | 2021-04-08 | 2021-07-09 | 海信视像科技股份有限公司 | Display device, multi-channel echo cancellation circuit and multi-channel echo cancellation method |
-
2021
- 2021-11-24 CN CN202111397929.9A patent/CN113823310B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040176955A1 (en) * | 2002-12-20 | 2004-09-09 | Farinelli Robert P. | Method and system for digitally controlling a multi-channel audio amplifier |
| JP2008124848A (en) * | 2006-11-14 | 2008-05-29 | Sony Corp | Audio reproduction device |
| CN106817667A (en) * | 2016-11-30 | 2017-06-09 | 努比亚技术有限公司 | One kind realizes stereosonic method, device and mobile terminal |
| CN106910510A (en) * | 2017-02-16 | 2017-06-30 | 智车优行科技（北京）有限公司 | Vehicle-mounted power amplifying device, vehicle and its audio play handling method |
| CN110223707A (en) * | 2019-07-10 | 2019-09-10 | 青岛海信电器股份有限公司 | Display device |
| CN110349582A (en) * | 2019-07-10 | 2019-10-18 | 青岛海信电器股份有限公司 | Display device and far field speech processing circuit |
| CN111294438A (en) * | 2020-01-22 | 2020-06-16 | 华为技术有限公司 | Method and terminal for realizing stereo output |
| CN212365491U (en) * | 2020-04-30 | 2021-01-15 | 深圳市海克莱特科技发展有限公司 | 86 panel mainboard that possesses interactive function of pronunciation |
| CN213586241U (en) * | 2020-11-30 | 2021-06-29 | 海信视像科技股份有限公司 | Far-field voice interaction device and electronic equipment |
| CN112885365A (en) * | 2021-01-08 | 2021-06-01 | 上海锐承通讯技术有限公司 | Echo eliminating device and vehicle-mounted intelligent terminal |
| CN112992171A (en) * | 2021-02-09 | 2021-06-18 | 海信视像科技股份有限公司 | Display device and control method for eliminating echo received by microphone |
| CN113096681A (en) * | 2021-04-08 | 2021-07-09 | 海信视像科技股份有限公司 | Display device, multi-channel echo cancellation circuit and multi-channel echo cancellation method |
Non-Patent Citations (2)
| Title |
|---|
| WOOTTICHAI NONSAKHOO ET AL.: "《Angle-of-Arrival Analysis of Multi-channel Stereo Ultrasonic Signal for Angular Coordinates Positioning》", 《2018 2ND INTERNATIONAL CONFERENCE ON IMAGING, SIGNAL PROCESSING AND COMMUNICATION (ICISPC)》 * |
| 叶波等: "《一种回声消除和噪声抑制SOC芯片》", 《电子学报》 * |
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| CN113823310B (en) | 2022-02-22 |
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