CN203721183U - A voice wakening device - Google Patents
A voice wakening device Download PDFInfo
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- CN203721183U CN203721183U CN201320863975.8U CN201320863975U CN203721183U CN 203721183 U CN203721183 U CN 203721183U CN 201320863975 U CN201320863975 U CN 201320863975U CN 203721183 U CN203721183 U CN 203721183U
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- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000005236 sound signal Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000002618 waking effect Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Abstract
A voice wakening device is positioned at a hand-free assembly (HF) end of a bluetooth communication device. The voice wakening device comprises a master control unit, a voice acquisition unit, an A/D converter and a voice recognition unit. A path of an output terminal of the voice acquisition unit used for acquiring user voices is directly connected with one input terminal of a master control unit of a to-be-wakened apparatus. The other path of the output terminal of the voice acquisition is connected with another input terminal of the master control through the A/D converter and the voice recognition unit. An output terminal of the master control unit is separately connected with input terminals of the voice recognition unit and the A/D converter. The A/D converter converts analogue sound signals of the input terminal into digital signals, and the digital signals are output to the master control unit through the voice recognition unit. Through the utilization of the voice wakening device of the utility model, the communication apparatus can be wakened up by voices, e.g., when a command word is 'Bluetooth language point', a user only needs to say 'Bluetooth language point' to the HF end of the apparatus so as to waken up the voice recognition module and start Bluetooth communication.
Description
Technical field
The utility model relates to a kind of voice Rouser, belongs to Bluetooth Communication Technology and speech recognition technology field.
Background technology
The utility model is the hands free applications framework agreement HFP based in Bluetooth Communication Technology, in this agreement, allow bluetooth equipment can control phone, as answer, hang up, rejection, phonetic dialing etc., it has defined audio frequency net gate way (AG) and two roles of hands-free assembly (HF).AG is the gateway device of audio frequency input and output.Typical audio frequency net gate way mainly contains bluetooth cellular phone; HF refers to the equipment that can receive and dispatch audio frequency remote control AG, and typical hands-free assembly mainly contains bluetooth earphone and bluetooth vehicle-mounted hand free device.The combination great majority of current Bluetooth technology and speech recognition are placed on sound identification module on AG, user sends phonetic order to HF, HF records and recording is carried out to compressed encoding processing, audio frequency after coding sends to AG end by Bluetooth communication protocol,, then the voice after recovery are sent into sound identification module and identify the audio frequency recovery of decode at AG end.But speech identifying function all needs to wake up and could start conventionally, current wake-up mode has button to wake up with voice to wake two kinds up.When sound identification module is in the time that AG holds, the mode that can only use button to wake up.Under vehicle environment, using button wake-up mode to mean in the time driving will take sb's mind off sth, and with manual manipulation, this situation has a lot of potential safety hazards, if still can use voice to wake up, just can solve such problem.
The utility model content
The utility model technology is dealt with problems: overcome the deficiencies in the prior art, a kind of voice Rouser is provided, can wake Bluetooth communication equipment up with voice, when when order word being " bluetooth language point ", only need to say " bluetooth language point " facing to the HF end of equipment, just can wake sound identification module up and start Bluetooth communication.
The utility model technical solution: a kind of voice Rouser, the HF that is positioned at Bluetooth communication equipment holds, and comprising: main control unit 1, voice collecting unit 2, A/D converter 3 and voice recognition unit 4; Directly be connected with an input end of the main control unit 1 for the treatment of Rouser for 2 output terminal one tunnels, voice collecting unit that gather user speech, another road is connected with another input end of main control unit 1 by A/D converter 3, voice recognition unit 4 successively; The output terminal of main control unit 1 is connected with the input end of voice recognition unit 4, A/D converter 3 respectively, and the analoging sound signal of input end is converted to digital signal by AD converter 3, and outputs to main control unit 1 by voice recognition unit 4.
Described voice collecting unit 2 is made up of the microphone for gathering user speech, note amplifier and comparer; The output terminal of microphone is connected with the input end of note amplifier, and the output terminal of note amplifier is connected with the output terminal of A/D converter 3 with comparer respectively.
The utility model advantage is compared with prior art: sound identification module is placed on HF end by the utility model, and use voice to wake recognition function up, does not need, with manual manipulation, to have improved the security of bluetooth in vehicle environment.
Brief description of the drawings
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is that Bluetooth communication equipment forms block diagram;
Fig. 3 is voice recognition unit workflow of the present utility model.
Embodiment
As Fig. 1, shown in 2, a kind of voice Rouser of the present utility model, be positioned at the HF end of Bluetooth communication equipment, comprise the voice collecting unit 2 for gathering user speech, its output terminal one tunnel is directly connected with the input end of the main control unit 1 for the treatment of Rouser, another road is successively by A/D converter 3, voice recognition unit 4 is connected with the input end of main control unit 1, another road is successively by A/D converter 3, voice recognition unit 4 is connected with the input end of main control unit 1, the output terminal of main control unit 1 respectively with voice recognition unit 4, the input end of A/D converter 3 is connected, as shown in Figure 1.The analoging sound signal of input end is converted to digital signal by AD converter 3, and output to main control unit 1 by voice recognition unit 4.
As shown in Figure 1, described voice collecting unit 2 is made up of the microphone for gathering user speech, note amplifier and comparer, the output terminal of microphone is connected with the input end of note amplifier, and the output terminal of note amplifier is connected with the output terminal of A/D converter 3 with comparer respectively.Note amplifier amplifies the sound signal of microphone output; Comparer has specific threshold value, and this threshold value can regulate according to distinct device, varying environment, such as can be made as 20 decibels under quiet environment, can be made as 40 decibels under noisy environment.When the input voltage of comparer is the voice signal of microphone conversion during higher than threshold value, the output terminal of comparer output wake-up signal, wakes main control unit 1 up, can carry out operating with sound identification module after waking up.
As shown in Figure 1, the utility model course of work is as follows:
(1) voice collecting unit 2 is made up of the microphone for gathering user speech, note amplifier and comparer, the output terminal of microphone is connected with the input end of note amplifier, and the output terminal of note amplifier is connected with the output terminal of A/D converter 3 with comparer respectively;
(2) note amplifier amplifies the sound signal of microphone output;
(3) comparer has specific threshold value, and this threshold value can regulate according to distinct device, varying environment, when the input voltage of comparer is the voice signal of microphone conversion during higher than threshold value, and the output terminal of comparer output wake-up signal;
(4) voice recognition unit can carry out semanteme identification to the sound signal receiving simultaneously, if identified by semanteme, also exports wake-up signal;
(5) main control unit 1 is waken up after receiving the wake-up signal of comparer and voice recognition unit simultaneously.After waking up, can carry out operating with sound identification module.
As shown in Figure 3, the utility model voice recognition unit workflow:
(1) speaker speaks facing to voice collecting unit, and the content of speaking is default wake command word, and voice signal is sent to voice recognition unit by voice collecting unit;
(2) voice recognition unit carries out semanteme identification to voice, draws identified text, and compares with default order word text;
(3) if mated with order word, identify output wake-up signal by semanteme;
If with order word mismatch, do not export wake-up signal.
Claims (2)
1. a voice Rouser, the hands-free assembly (HF) that is positioned at Bluetooth communication equipment is held, and it is characterized in that comprising: main control unit (1), voice collecting unit (2), A/D converter (3) and voice recognition unit (4); Directly be connected with an input end of the main control unit (1) for the treatment of Rouser for output terminal one tunnel, voice collecting unit (2) that gathers user speech, another road is connected with another input end of main control unit (1) by A/D converter (3), voice recognition unit (4) successively; The output terminal of main control unit (1) is connected with the input end of voice recognition unit (4), A/D converter (3) respectively.
2. voice Rouser according to claim 1, is characterized in that: described voice collecting unit (2) is made up of the microphone for gathering user speech, note amplifier and comparer; The output terminal of microphone is connected with the input end of note amplifier, and the output terminal of note amplifier is connected with the output terminal of A/D converter (3) with comparer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320863975.8U CN203721183U (en) | 2013-12-25 | 2013-12-25 | A voice wakening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320863975.8U CN203721183U (en) | 2013-12-25 | 2013-12-25 | A voice wakening device |
Publications (1)
| Publication Number | Publication Date |
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| CN203721183U true CN203721183U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320863975.8U Expired - Lifetime CN203721183U (en) | 2013-12-25 | 2013-12-25 | A voice wakening device |
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