CN103177723A - Speech processing device, vehicle-mounted terminal device and speech processing method - Google Patents
Speech processing device, vehicle-mounted terminal device and speech processing method Download PDFInfo
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- CN103177723A CN103177723A CN2011104309561A CN201110430956A CN103177723A CN 103177723 A CN103177723 A CN 103177723A CN 2011104309561 A CN2011104309561 A CN 2011104309561A CN 201110430956 A CN201110430956 A CN 201110430956A CN 103177723 A CN103177723 A CN 103177723A
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Abstract
The invention provides a speech processing device, a vehicle-mounted terminal device and a speech processing method. The speech processing device comprises a microphone, a switching selection circuit, an echo canceller, a telephone speech transmitter, a speech recognizer and a controller, wherein the microphone receives speech input of a user, an input end of the switching selection circuit is connected with the microphone, the echo canceller is connected with a first output end of the switching selection circuit and conducts echo cancellation and noise reduction on the speech input, the telephone speech transmitter is connected with the echo canceller and is used for transmitting the speech input subjected to echo cancellation and noise reduction by the echo canceller, the speech recognizer is connected with a second output end of the switching selection circuit and is used for conducting speech recognition on the speech input, and the controller is connected with a control end of the switching selection circuit and is used for switching an input end of the switching selection circuit to the second output end of the switching selection circuit through triggering of a wakeup signal. By the aid of the speech processing device, the vehicle-mounted terminal device and the speech processing method, the speech recognition rate can be improved.
Description
Technical field
The present invention relates to mobile unit, relate in particular to a kind of voice processing apparatus, vehicle-mounted terminal equipment and method of speech processing.
Background technology
The equipment such as vehicle-mounted terminal equipment, mobile phone is supporting telephone conversation simultaneously and speech recognition often.Fig. 1 shows a kind of voice processing apparatus for supporting conversation and speech recognition of the prior art, comprise: microphone 11, Echo Canceller 12, call voice transmitter/speech recognition device 13, wherein, microphone 11 is used for receiving user's phonetic entry, after carrying out echo elimination, noise reduction through Echo Canceller 12, input to call voice transmitter/speech recognition device 13, under telephony mode, the phonetic entry after noise reduction is sent on telephone network, perhaps under speech recognition mode, speech recognition is carried out in the phonetic entry through noise reduction.
But, in structure shown in Figure 1, after phonetic entry process Echo Canceller 12, the voice signal that wherein comprises has distortion to a certain degree, and for speech recognition device, the part of losing in distorted signal may be the necessary information of some phonetic decision, can affect the discrimination of speech recognition device, can't make judgement accurately.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of voice processing apparatus, vehicle-mounted terminal equipment and method of speech processing, can improve phonetic recognization rate.
For solving the problems of the technologies described above, the invention provides a kind of voice processing apparatus, comprising:
Receive the microphone of user's phonetic entry;
Switch is selected circuit, and its input end is connected with described microphone;
Select the first output terminal of circuit to be connected, described phonetic entry is carried out the Echo Canceller of echo elimination and noise reduction with described switch;
Be connected with described Echo Canceller, to eliminate through described Echo Canceller echo and noise reduction after the call voice transmitter that sends of phonetic entry;
The speech recognition device of selecting the second output terminal of circuit to be connected, described phonetic entry to be carried out speech recognition with described switch;
Select the control end of circuit to be connected, to be triggered by wake-up signal and select the input end of circuit to switch to the controller of described the second output terminal on described switch with described switch.
Alternatively, described controller has the key of waking up, and described wake-up signal is produced by the described key that wakes up.
Alternatively, described voice processing apparatus also comprises:
The power amplifying player that is connected with described speech recognition device, the phonetic entry after speech recognition is amplified and play.
Alternatively, described call voice transmitter comprises 2G call voice transmitter or 3G call voice transmitter.
Alternatively, described switch selects circuit to comprise either-or switch.
The present invention also provides a kind of vehicle-mounted terminal equipment, comprises the described voice processing apparatus of above any one.
The present invention also provides a kind of method of speech processing, comprising:
The input of reception user speech;
Described phonetic entry is carried out carrying out the call voice transmission after echo elimination and noise reduction;
Triggered by wake-up signal, described phonetic entry is switched to directly carry out speech recognition.
Alternatively, described method also comprises: the phonetic entry after described speech recognition is amplified and play.
Alternatively, adopt 2G call voice transmitter or 3G call voice transmitter echo is eliminated and noise reduction after phonetic entry carry out the call voice transmission.
Compared with prior art, the present invention has the following advantages:
in the voice processing apparatus of the embodiment of the present invention, microphone is connected to the input end that switch is selected circuit, Echo Canceller is connected to the first output terminal that switch is selected circuit, speech recognition device is connected to the second output terminal that switch is selected circuit, switch selects the control end of circuit to connect controller, controller is triggered by wake-up signal, select the input end of circuit to switch to the second output terminal on switch, namely in the situation that speech recognition, the phonetic entry that microphone receives is directly to send to speech recognition device, before and without the noise reduction process of Echo Canceller, thereby avoided distortion that noise reduction causes on the impact of speech recognition device.
Description of drawings
Fig. 1 is the structured flowchart of a kind of voice processing apparatus of the prior art;
Fig. 2 is the structured flowchart of the voice processing apparatus of the embodiment of the present invention;
Fig. 3 is the schematic flow sheet of the method for speech processing of the embodiment of the present invention.
Embodiment
In prior art, due to speech recognition device and the shared same microphone of call voice sending module and echo cancellation module, the distortion meeting that causes echo cancellation module to produce affects the discrimination of speech recognition device.
in the voice processing apparatus of the embodiment of the present invention, microphone is connected to the input end that switch is selected circuit, Echo Canceller is connected to the first output terminal that switch is selected circuit, speech recognition device is connected to the second output terminal that switch is selected circuit, switch selects the control end of circuit to connect controller, controller is triggered by wake-up signal, select the input end of circuit to switch to the second output terminal on switch, namely in the situation that speech recognition, the phonetic entry that microphone receives is directly to send to speech recognition device, before and without the noise reduction process of Echo Canceller, thereby avoided distortion that noise reduction causes on the impact of speech recognition device.
The invention will be further described below in conjunction with specific embodiments and the drawings, but should not limit protection scope of the present invention with this.
Fig. 2 shows the structured flowchart of the voice processing apparatus of the present embodiment, includes but not limited to: microphone 21, switch are selected circuit 22, Echo Canceller 23, call voice transmitter 24, speech recognition device 25, power amplifying player 27, controller 26.
Wherein, microphone 21 can be used for receiving user's phonetic entry, and this phonetic entry can be the phonetic entry under telephony mode, i.e. the phonetic entry of user in the telephone relation process; Can be also the phonetic entry under speech recognition mode, namely be used for carrying out processes such as playback after acoustic control, identification by user's phonetic entry.
Switch selects the input end of circuit 22 to be connected with microphone 21, can be used for receiving phonetic entry from microphone 21, and its first output terminal is connected with Echo Canceller 23, and its second input end is connected with speech recognition device 25, and its control end is connected with controller 26.Switch selects circuit 22 input end to be switched to the first output terminal or the second output terminal according to the control of controller 26, is about to the phonetic entry that microphone 21 sends and transfers to Echo Canceller 23 or speech recognition device 25.In one embodiment, switch selects circuit 22 can comprise either-or switch, namely adopts the switching of either-or switch between realizing inputting and exporting.In another embodiment, switch selects circuit 22 also can adopt MUX to realize.
Echo Canceller 23 selects the first output terminal of circuit 22 to be connected with switch, can carry out echo to phonetic entry and eliminate and noise reduction under telephony mode.Concrete, Echo Canceller 23 can adopt echo inhibition, acoustic echo to eliminate (Acoustic Echo Cancellor) or other well known to a person skilled in the art mode, and the processing such as echo elimination, noise reduction are carried out in input phonetic entry wherein.
Call voice transmitter 24 is connected with Echo Canceller 23, and the process echo elimination of Echo Canceller 23 outputs and the phonetic entry of noise reduction are sent, and for example can be sent on telephone network.Call voice transmitter 24 can comprise the modules such as coding, modulation, particularly, call voice transmitter 24 can be that call voice is sent to 2G call voice transmitter on the 2G mobile telephone network, or call voice is sent to 3G call voice transmitter on the 3G mobile telephone network.
Speech recognition device 25 selects the second output terminal of circuit 22 to be connected with switch, when selecting the input end of circuit 22 to switch to the second output terminal on switch after controller 26 is triggered by wake-up signal, can carry out speech recognition to the phonetic entry of importing into.This phonetic entry selects circuit 22 directly to import into from microphone 21 via switch, do not eliminate and noise reduction process by the echo of Echo Canceller 23, thereby not distortion, be conducive to improve discrimination.Speech recognition device 25 can adopt the known recognition technologies such as pattern matching method that the phonetic entry that receives is identified.
Also comprise the power amplifying player 27 that is connected with speech recognition device 25 in the present embodiment, the voice signal that produces after speech recognition device 25 speech recognitions is carried out the operations such as power amplification, broadcast.
Controller 26 can be the special-purpose control circuit that switches between telephony mode and speech recognition mode, also can pass through general purpose controller (for example, microprocessor, microcontroller etc.) and realize.Controller 26 can have the key of waking up 26a, and the user can wake the wake-up signal that key 26a produces change-over switch selection circuit 22 up by pressing this.Be the user press wake key 26a up after, the phonetic entry that microphone 21 collects will directly be sent to speech recognition device 25.Wake key 26a up and can be and adopt hard-wired button, what can be based on also that software realizes be presented at button on graphic user interface.
Need to prove, in the present embodiment, switch selects circuit 22 by default input end to be connected to the first output terminal, namely be set under telephony mode, after being triggered by the wake-up signal that wakes key 26a generation up, the input end of controller 26 gauge tap selection circuit 22 switches to the second output terminal and is conducted, and phonetic entry directly is sent to speech recognition device 25.
The voice processing apparatus of the present embodiment can be integrated in vehicle-mounted terminal equipment, the inside such as portable set such as mobile phone.
The present embodiment also provides a kind of method of speech processing, and its schematic flow sheet comprises as shown in Figure 3:
Step S31 receives the user speech input;
Step S32 carries out carrying out the call voice transmission after echo elimination and noise reduction to described phonetic entry;
Step S33 is triggered by wake-up signal, described phonetic entry is switched to directly carry out speech recognition.
In addition, phonetic entry is switched to directly carry out speech recognition after, can also to identification after phonetic entry carry out power amplification and broadcast etc.
About being described in more detail of this method of speech processing, see also in above-described embodiment the detailed description to the course of work of voice processing apparatus, repeat no more here.
Although the present invention with preferred embodiment openly as above; but it is not to limit the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible change and modification, so protection scope of the present invention should be as the criterion with the scope that claim of the present invention was defined.
Claims (9)
1. a voice processing apparatus, is characterized in that, comprising:
Receive the microphone of user's phonetic entry;
Switch is selected circuit, and its input end is connected with described microphone;
Select the first output terminal of circuit to be connected, described phonetic entry is carried out the Echo Canceller of echo elimination and noise reduction with described switch;
Be connected with described Echo Canceller, to eliminate through described Echo Canceller echo and noise reduction after the call voice transmitter that sends of phonetic entry;
The speech recognition device of selecting the second output terminal of circuit to be connected, described phonetic entry to be carried out speech recognition with described switch;
Select the control end of circuit to be connected, to be triggered by wake-up signal and select the input end of circuit to switch to the controller of described the second output terminal on described switch with described switch.
2. voice processing apparatus according to claim 1, is characterized in that, described controller has the key of waking up, and described wake-up signal is produced by the described key that wakes up.
3. voice processing apparatus according to claim 1, is characterized in that, also comprises:
The power amplifying player that is connected with described speech recognition device, the phonetic entry after speech recognition is amplified and play.
4. voice processing apparatus according to claim 1, is characterized in that, described call voice transmitter comprises 2G call voice transmitter or 3G call voice transmitter.
5. voice processing apparatus according to claim 1, is characterized in that, described switch selects circuit to comprise either-or switch.
6. a vehicle-mounted terminal equipment, is characterized in that, comprises the described voice processing apparatus of any one in claim 1 to 5.
7. a method of speech processing, is characterized in that, comprising:
The input of reception user speech;
Described phonetic entry is carried out carrying out the call voice transmission after echo elimination and noise reduction;
Triggered by wake-up signal, described phonetic entry is switched to directly carry out speech recognition.
8. method of speech processing according to claim 7, is characterized in that, also comprises: the phonetic entry after described speech recognition is amplified and play.
9. method of speech processing according to claim 7, is characterized in that, adopt 2G call voice transmitter or 3G call voice transmitter echo is eliminated and noise reduction after phonetic entry carry out the call voice transmission.
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| CN2011104309561A CN103177723A (en) | 2011-12-20 | 2011-12-20 | Speech processing device, vehicle-mounted terminal device and speech processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104309561A CN103177723A (en) | 2011-12-20 | 2011-12-20 | Speech processing device, vehicle-mounted terminal device and speech processing method |
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Cited By (7)
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| CN105185392A (en) * | 2015-09-06 | 2015-12-23 | 苏州南光电子科技有限公司 | Playing method of sound control vehicular player |
| CN109087650A (en) * | 2018-10-24 | 2018-12-25 | 北京小米移动软件有限公司 | voice awakening method and device |
| CN109360562A (en) * | 2018-12-07 | 2019-02-19 | 深圳创维－Rgb电子有限公司 | Echo cancel method, device, medium and voice awakening method and equipment |
| CN109949820A (en) * | 2019-03-07 | 2019-06-28 | 出门问问信息科技有限公司 | A kind of audio signal processing method, apparatus and system |
| WO2020017517A1 (en) * | 2018-07-20 | 2020-01-23 | 株式会社ソニー・インタラクティブエンタテインメント | Voice signal processing system and voice signal processing device |
| CN112820273A (en) * | 2020-12-31 | 2021-05-18 | 青岛海尔科技有限公司 | Wake-up judging method and device, storage medium and electronic equipment |
| CN114400003A (en) * | 2022-01-10 | 2022-04-26 | 北京至简科技有限公司 | Control method and system for automatically switching microphones, electronic equipment and storage medium |
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| CN109360562A (en) * | 2018-12-07 | 2019-02-19 | 深圳创维－Rgb电子有限公司 | Echo cancel method, device, medium and voice awakening method and equipment |
| CN109949820A (en) * | 2019-03-07 | 2019-06-28 | 出门问问信息科技有限公司 | A kind of audio signal processing method, apparatus and system |
| CN112820273B (en) * | 2020-12-31 | 2022-12-02 | 青岛海尔科技有限公司 | Wake-up judging method and device, storage medium and electronic equipment |
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Application publication date: 20130626 |