WO2018068422A1 - Procédé et système d'amélioration du taux de reconnaissance vocale d'un ventilateur de cuisine - Google Patents

Procédé et système d'amélioration du taux de reconnaissance vocale d'un ventilateur de cuisine Download PDF

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Publication number
WO2018068422A1
WO2018068422A1 PCT/CN2016/113278 CN2016113278W WO2018068422A1 WO 2018068422 A1 WO2018068422 A1 WO 2018068422A1 CN 2016113278 W CN2016113278 W CN 2016113278W WO 2018068422 A1 WO2018068422 A1 WO 2018068422A1
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WO
WIPO (PCT)
Prior art keywords
voice command
voice
range hood
fan speed
module
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Application number
PCT/CN2016/113278
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English (en)
Chinese (zh)
Inventor
宋夏
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广州视源电子科技股份有限公司
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Publication of WO2018068422A1 publication Critical patent/WO2018068422A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2021—Arrangement or mounting of control or safety systems
    • 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
    • G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
    • 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
    • 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
    • G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
    • G10L2015/223—Execution procedure of a spoken command
    • 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
    • G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
    • G10L2015/226—Procedures used during a speech recognition process, e.g. man-machine dialogue using non-speech characteristics
    • G10L2015/228—Procedures used during a speech recognition process, e.g. man-machine dialogue using non-speech characteristics of application context

Definitions

  • Embodiments of the present invention relate to the field of voice recognition technology, and in particular, to a method and system for improving a voice recognition rate of a range hood.
  • voice control range hoods have entered people's family life, and different languages can be used.
  • voice commands to control the various functions of the range hood for example, the function of controlling the switch of the range hood, the position of the fan and the timing through voice commands, which greatly facilitates people's lives, and also saves the previous function buttons on the range hood. It is especially convenient for the elderly.
  • the speech recognition model is usually trained by increasing the complexity of the speech recognition algorithm or according to the running noise, but if the speech recognition algorithm is complicated, it is bound to increase the CPU (Central Processing Unit).
  • the workload of the device affects the response speed of the device and increases the power consumption of the device.
  • the range hood is usually provided with multiple operating speeds in different kitchen environments. The noise generated during operation is also different, so the speech recognition model obtained by training may not be suitable for the actual use environment of the range hood.
  • the embodiment of the invention provides a method and a system for improving the speech recognition rate of the range hood, so as to improve the speech recognition rate by appropriately reducing the running noise of the range hood when the speech recognition is difficult.
  • an embodiment of the present invention provides a method for improving a voice recognition rate of a range hood, the method comprising:
  • the method further includes:
  • the method further includes: if the recognition of the second voice command fails within a set time, recovering the fan speed of the range hood, and deleting the saved first voice command.
  • the method further includes:
  • an embodiment of the present invention provides a system for improving a voice recognition rate of a range hood, the system comprising:
  • a reducing module configured to reduce a current fan speed of the range hood when the number of consecutive failures of identifying the first voice command exceeds a set value
  • a receiving module configured to receive a second voice command, and identify the second voice command
  • an instruction execution module configured to perform an indication matching the second voice command if the second voice command is successfully identified within a set time.
  • system further includes:
  • a first voice command saving module configured to save the first voice command before reducing a current fan speed of the range hood after the number of consecutive failures of identifying the first voice command exceeds a set value
  • a query module configured to query, in the database based on the current fan speed of the range hood, whether there is a voice sample record matching the first voice command
  • the indication execution module is further configured to: if there is a voice sample record matching the first voice command in the database, perform an indication matching the voice sample record;
  • the reducing module is further configured to perform the operation of reducing a current fan speed of the range hood if there is no voice sample record matching the first voice command in the database.
  • system further includes:
  • a recovery module configured to recover if the second voice command fails to be recognized within a set time The fan speed of the hood is removed and the saved first voice command is deleted.
  • system further includes:
  • a saving module configured to perform, after the indicating that the second voice command is successful within a set time, performing an instruction matching the second voice command, if the first voice command and the first voice command If the similarity of the two voice commands is greater than the similarity threshold, the first voice command, the current fan speed of the range hood, and the second voice command are associated and saved in a database.
  • system further includes:
  • a deleting module configured to perform, after the indicating that the second voice command is successful within a set time, performing an instruction matching the second voice command, if the first voice command and the first voice command If the similarity of the two voice commands is not greater than the similarity threshold, the saved first voice command is deleted.
  • the method for improving the voice recognition rate of the range hood reduces the current fan speed of the range hood when the number of consecutive failures of the first voice command is determined to exceed the set value;
  • the second voice command is used to identify; if the second voice command is successfully identified within the set time, the technical means for performing the indication matching the second voice command is implemented, so that when the voice recognition is difficult to monitor,
  • the speech recognition rate is improved by appropriately reducing the running noise of the hood itself.
  • FIG. 1 is a schematic flow chart of a method for improving a voice recognition rate of a range hood according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic flow chart of a method for improving a voice recognition rate of a range hood provided by Embodiment 2 of the present invention
  • FIG. 3 is a flow chart of a method for improving the voice recognition rate of a range hood provided by Embodiment 3 of the present invention.
  • Embodiment 4 is a schematic flow chart of a method for improving a voice recognition rate of a range hood provided by Embodiment 4 of the present invention
  • FIG. 5 is a schematic structural diagram of a system for improving the voice recognition rate of a range hood provided by Embodiment 5 of the present invention.
  • FIG. 1 is a flow chart of a method for improving a voice recognition rate of a range hood according to a first embodiment of the present invention.
  • the method is applicable to a situation in which a voice command issued by a user is recognized and a corresponding operation is performed in the process of working in the range hood. It can be performed by a system that improves the voice recognition rate of the range hood.
  • the system can pass Implemented in hardware and/or software.
  • the method specifically includes the following steps:
  • Step 110 When the number of consecutive failures of identifying the first voice command exceeds a set value, reducing the current fan speed of the range hood.
  • the first voice command and the second voice command referred to in the present invention all refer to a voice command that is input by the user to control the function of the range hood.
  • the first voice command and the second voice command may be the same or different, but only for convenience.
  • the description is defined by “first” and “second”; specifically, the voice of the user controlling the functions of the range hood by speaking, such as “turning on the light”, “starting the large exhaust fan”, “closing” or “timing” 10 minutes” and other speech utterances.
  • the voice recognition system on the range hood recognizes the voice command and responds to the voice command to achieve the purpose of controlling various functions of the range hood by voice.
  • the hood does not perform the corresponding operation according to the voice command, that is, the hood fails to recognize the voice command once; usually if the hood does not respond to the voice command, the user will issue the same voice again.
  • the command of course, the soot opportunity performs another recognition operation of the voice command.
  • the number of consecutive failures of identifying a certain voice command exceeds the set value, it is considered that there is difficulty in voice recognition at this time, and it may be a range hood.
  • the running noise of itself is too large.
  • the “number of consecutive failures of identifying the first voice command” in the present solution does not refer to the number of consecutive failures of multiple recognition of a single received voice command, but refers to the number of consecutive failures, but refers to The number of consecutive failures to identify the same voice command received multiple times.
  • the set value can be set according to design experience, for example, it can be 3 times, etc. In order to enhance the user experience, the set value is generally not set too large, and the situation that multiple voice commands are issued but no response is avoided.
  • the acoustic feature value of the voice command input by the user is extracted every time.
  • the similarity of the adjacent two acoustic feature values is higher than the preset value, the adjacent two voice commands are considered to be the same. Language Sound command.
  • the operation of the range hood itself is reduced by reducing the current fan speed of the range hood. Noise to improve speech recognition rate.
  • the speed of the fan does not give the user too complicated control mode.
  • the fan speed is selected through multiple gear positions.
  • the current fan speed of the hood is reduced, not random. Reduce the current fan speed, but reduce the fan speed to the adjacent gear.
  • Step 120 Receive a second voice command, and identify the second voice command.
  • the voice command input by the user is received again, and the received voice command is voice-recognized to achieve the purpose of responding to the voice command of the user.
  • the present invention does not limit the speech recognition algorithm used, and the speech recognition algorithms existing in the prior art can be used in the present invention.
  • Step 130 If the second voice command is successfully identified within the set time, an indication matching the second voice command is performed.
  • the voice command input by the user is successfully recognized within a reasonable set time, the user's voice command is immediately responded to, and an indication matching the voice command is performed; for example, "turning on the light” or "timing".
  • the method for improving the voice recognition rate of the range hood provides a method for reducing the current fan speed of the range hood when the number of consecutive failures of identifying the first voice command exceeds a set value;
  • the second voice command is used for identification; if the second voice command is successfully identified within the set time, the technical means for performing the indication matching the second voice command is implemented, and when the voice recognition is difficult to monitor, Reduce the fan speed of the range hood to properly reduce the running noise of the range hood itself to improve the speech recognition rate.
  • FIG. 2 is a schematic flowchart of a method for improving a voice recognition rate of a range hood according to Embodiment 2 of the present invention.
  • the embodiment is further optimized, and the benefit of optimization is that the stored The voice sample records matched by the voice command respond to the user's control commands, thereby improving the voice recognition rate.
  • the method specifically includes the following:
  • Step 210 Save the first voice command when the number of consecutive failures of identifying the first voice command exceeds a set value.
  • Step 220 Query whether there is a voice sample record matching the first voice command in the database based on the current fan speed of the hood. If yes, execute step 230. Otherwise, perform step 240.
  • the corresponding voice recognition data is “111111”, and when the current fan speed of the range hood is 100 rpm, the range hood It will generate a certain noise.
  • the corresponding voice data recognized by the first voice command issued by the user to "turn on the light” is "111100”, then if there is such a voice sample record in the database - "100- 111100-111111”, it can be judged that when the current fan speed of the range hood is 100 rpm, the first voice command identified is "111100”, and the corresponding voice command is substantially "turn on the light”, then the soot
  • the central control unit of the machine immediately performs the operation of turning on the light.
  • Step 230 Perform an indication matching the voice sample record, and end the process.
  • Step 240 Reduce the current fan speed of the range hood.
  • the purpose of reducing the current fan speed of the range hood is to reduce the noise generated by the range hood itself to a certain extent and improve the recognition rate of voice commands.
  • Step 250 Receive a second voice command, and identify the second voice command.
  • Step 260 If the second voice command is successfully identified within the set time, execute and An indication of the second voice command match.
  • the method for improving the voice recognition rate of the range hood provided by the embodiment, on the basis of the technical solution of the foregoing embodiment, when the number of consecutive failures of identifying the first voice command exceeds a set value, saving the first Voice command, and based on the current fan speed query of the range hood, whether there is a voice sample record matching the first voice command in the database, and if so, a technical means for performing an indication matching the voice sample record is implemented
  • the voice sample records stored in the database that match the voice commands respond to the user's control commands, thereby improving the voice recognition rate.
  • FIG. 3 is a schematic flowchart of a method for improving a voice recognition rate of a range hood according to Embodiment 3 of the present invention.
  • the embodiment is further optimized, and the benefit of optimization is to accurately eliminate invalid voice. command.
  • the method is as follows:
  • Step 310 Save the first voice command when the number of consecutive failures of identifying the first voice command exceeds a set value.
  • Step 320 Query whether there is a voice sample record matching the first voice command in the database based on the current fan speed of the hood. If yes, go to step 330. Otherwise, go to step 340.
  • Step 330 Perform an indication matching the voice sample record.
  • Step 340 reducing the current fan speed of the range hood.
  • Step 350 Receive a second voice command, and identify the second voice command.
  • Step 360 If the second voice command is successfully identified within the set time, step 370 is performed; otherwise, step 380 is performed.
  • Step 370 Perform an indication that matches the second voice command.
  • Step 380 Restore the fan speed of the range hood, and delete the saved first voice command.
  • the noise generated by the operation of the range hood itself has been reduced.
  • the second voice command fails to be recognized within the set time, the second voice command is considered to be An invalid voice command may be caused by other external sound interference, or it may be a dialogue between the user's family members, and is not a control command for the function of the hood.
  • the method for improving the voice recognition rate of the range hood provided by the embodiment, on the basis of the technical solution of the foregoing embodiment, recovering the hood by failing to identify the second voice command within a set time
  • the fan speed and the technical means of deleting the saved first voice command achieve the purpose of accurately eliminating invalid voice commands.
  • Embodiment 4 is a schematic flowchart of a method for improving a voice recognition rate of a range hood according to Embodiment 4 of the present invention.
  • the embodiment is further optimized, and the benefit of optimization is realizing updating the database in real time. Improve the next speech recognition rate.
  • the method is as follows:
  • Step 410 Save the first voice command when the number of consecutive failures of identifying the first voice command exceeds a set value.
  • Step 420 Query whether there is a voice sample record matching the first voice command in the database based on the current fan speed of the hood. If yes, execute step 430. Otherwise, perform step 440.
  • Step 430 Perform an indication matching the voice sample record.
  • Step 440 Reduce the current fan speed of the range hood.
  • Step 450 Receive a second voice command, and identify the second voice command.
  • Step 460 If the second voice command is successfully identified within the set time, step 470 is performed; otherwise, step 480 is performed.
  • Step 470 Perform an indication matching the second voice command, and continue to perform steps 490a and 490b.
  • Step 480 Restore the fan speed of the range hood, and delete the saved first voice command.
  • Step 490a if the similarity between the first voice command and the second voice command is greater than a similarity threshold, correlating the first voice command, the current fan speed of the range hood, and the second voice command, And save to the database.
  • the similarity between the first voice command and the second voice command is greater than a similarity threshold, if the first voice command and the second voice command are considered to be the same voice command, then the first voice is The command, the current fan speed of the range hood, and the second voice command are associated and saved to the database for use in the next speech recognition.
  • the corresponding voice recognition data is “111111”, and when the current fan speed of the range hood is 100 rpm, the first voice command corresponding to the first voice command is recognized.
  • the identification data is “111100”, and the similarity between the first voice command and the second voice command is greater than a similarity threshold, and the first voice command, the current fan speed of the range hood, and the second voice are The command is associated to obtain such a voice sample record - "100-111100-111111", and the voice sample record - "100-111100-111111” is saved in the database, so as to facilitate the next speech recognition query call to improve Speech recognition rate. If the fan speed is limited to operate in a plurality of gear positions, the first voice command and the second voice command are directly saved in association with the gear positions corresponding to the first voice command.
  • Step 490b If the similarity between the first voice command and the second voice command is not greater than a similarity threshold, deleting the saved first voice command.
  • the similarity between the first voice command and the second voice command is not greater than the similarity threshold, the first voice command and the second voice command are considered to be different voice commands, and the The first voice command is an invalid voice command and is discarded.
  • the method for improving the voice recognition rate of the range hood provided by the embodiment, on the basis of the technical solution of the foregoing embodiment, by adding “if the similarity between the first voice command and the second voice command is greater than the similarity threshold And the first voice command, the current fan speed of the range hood and the second voice command are associated, and saved in a database, otherwise the technical means of deleting the saved first voice command is achieved, real-time Update the database to improve the next speech recognition rate and accurately exclude the purpose of invalid voice commands.
  • FIG. 5 is a structural block diagram of a system for improving a voice recognition rate of a range hood according to Embodiment 5 of the present invention, and the system specifically includes the following:
  • the reducing module 510 is configured to: when the number of consecutive failures of identifying the first voice command exceeds the set value, reduce the current fan speed of the range hood; and the receiving module 520 is configured to receive the second voice command, and The second voice command is used to identify; the instruction execution module 530 is configured to: if the second voice command is successfully identified within the set time, perform an indication that matches the second voice command;
  • system may further include:
  • a first voice command saving module configured to save the first voice command before reducing a current fan speed of the range hood after the number of consecutive failures of identifying the first voice command exceeds a set value
  • a query module configured to query, in the database based on the current fan speed of the range hood, whether there is a voice sample record matching the first voice command
  • the indication execution module 530 is further configured to: if there is a voice sample record matching the first voice command in the database, perform an indication matching the voice sample record;
  • the reducing module 510 is further configured to perform the operation of reducing the current fan speed of the range hood if there is no voice sample record matching the first voice command in the database.
  • system may further include:
  • a recovery module configured to restore a fan speed of the range hood if the recognition of the second voice command fails within a set time, and delete the saved first voice command.
  • system may further include:
  • a saving module configured to perform, after the indicating that the second voice command is successful within a set time, performing an instruction matching the second voice command, if the first voice command and the first voice command If the similarity of the two voice commands is greater than the similarity threshold, the first voice command, the current fan speed of the range hood, and the second voice command are associated and saved in a database.
  • system may further include:
  • a deleting module configured to perform, after the indicating that the second voice command is successful within a set time, performing an instruction matching the second voice command, if the first voice command and the first voice command If the similarity of the two voice commands is not greater than the similarity threshold, the saved first voice command is deleted.
  • the system for improving the voice recognition rate of the range hood reduces the current fan speed of the range hood when the number of consecutive failures of the first voice command is determined to exceed the set value;
  • the second voice command performs identification; if the second voice command is successfully identified within the set time, the technical means for performing the indication matching the second voice command is implemented When it is found that the speech recognition is difficult, the speech recognition rate is improved by appropriately reducing the running noise of the hood itself.
  • the above product can perform the method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.
  • a program instructing related hardware may be completed by a program instructing related hardware, and the program is stored in a storage medium, and includes a plurality of instructions for making a device (which may be a single chip microcomputer). , a chip, etc. or a processor performs all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

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Abstract

L'invention concerne un procédé et un système permettant d'améliorer un taux de reconnaissance vocale d'un ventilateur de cuisine. Le procédé comprend spécifiquement les étapes suivantes : lorsque le nombre de défaillances de reconnaissance continue d'une première commande vocale dépasse une valeur prédéfinie, la réduction d'une vitesse de rotation de ventilateur d'aspiration actuelle d'un ventilateur de cuisine ; puis la réception d'une seconde commande vocale et la reconnaissance de la seconde commande vocale ; et si la seconde commande vocale est reconnue avec succès dans un délai prédéfini, l'exécution d'une instruction correspondant à la seconde commande vocale. Le système permettant de mettre en œuvre le procédé comprend : un module de réduction (510), un module de réception (520) et un module d'exécution d'instruction (530). Le module de réduction (510) est utilisé pour réduire une vitesse de rotation de ventilateur d'aspiration actuelle d'un ventilateur de cuisine lorsque le nombre de défaillances de reconnaissance continue d'une première commande vocale dépasse une valeur prédéfinie ; le module de réception (520) est utilisé pour recevoir une seconde commande vocale et pour reconnaître la seconde commande vocale ; et le module d'exécution d'instruction (530) est utilisé pour exécuter une instruction correspondant à la seconde commande vocale si la seconde commande vocale est reconnue avec succès dans un délai prédéfini. Lorsqu'une difficulté de reconnaissance vocale est contrôlée, le procédé et le système réalisent une amélioration du taux de reconnaissance vocale au moyen d'une réduction appropriée du bruit de fonctionnement d'un ventilateur de cuisine lui-même.
PCT/CN2016/113278 2016-10-14 2016-12-29 Procédé et système d'amélioration du taux de reconnaissance vocale d'un ventilateur de cuisine WO2018068422A1 (fr)

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