CN108564951B - Method for intelligently reducing false awakening probability of voice control equipment - Google Patents
Method for intelligently reducing false awakening probability of voice control equipment Download PDFInfo
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- G—PHYSICS
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- G10L15/00—Speech recognition
- G10L15/26—Speech to text systems
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- G10L15/00—Speech recognition
- G10L15/06—Creation of reference templates; Training of speech recognition systems, e.g. adaptation to the characteristics of the speaker's voice
- G10L15/065—Adaptation
- G10L15/07—Adaptation to the speaker
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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
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- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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Abstract
The invention discloses a method for intelligently reducing the false awakening probability of voice control equipment, which comprises the following steps: setting an initial threshold value for the awakening word; adjusting the threshold value of the awakening word according to a preset rule, wherein the preset rule comprises the following steps: the threshold value of the awakening word is reduced along with the increase of the use times of the awakening word; the threshold for the wake word increases with increasing time. The invention adjusts the threshold value of each awakening word through the awakening habit of the user, thereby reducing the probability of mistaken awakening of the voice control equipment.
Description
Technical Field
The invention relates to the technical field of voice signal processing, in particular to a method for intelligently reducing false awakening probability of voice control equipment.
Background
The existing voice control equipment needs to set wake-up words and corresponding threshold values, and all wake-up words are usually one threshold value, or several types of threshold values are set before leaving a factory, and the setting of the threshold values is irrelevant to the use habits of users. However, in general, due to personal habits of users, all of the wake-up words are not used, and even a small part of the wake-up words can be used. For example, there are more than 100 awakening words in the vehicle-mounted rearview mirror, but one user often uses about 20 awakening words, and the other more than 80 awakening words are not used, so that the probability of false awakening is increased. For example, if there are 2 main wake words, one is "niuhouxiaokui", and one is "niuhouhi", but for the same user, only one main wake word is used, and if 2 thresholds are the same, the other main wake word only increases the probability of false wake without contributing to the wake effect in actual use.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for intelligently reducing the false wake-up probability of a voice control device, comprising:
setting an initial threshold value for the awakening word;
adjusting the threshold value of the awakening word according to a preset rule, wherein the preset rule comprises the following steps: the threshold value of the awakening word is reduced along with the increase of the use times of the awakening word; the threshold for the wake word increases with increasing time.
Preferably, the method for intelligently reducing the false wake-up probability of the voice control device further includes:
setting a threshold upper limit for the threshold of the awakening word;
when the threshold value of the awakening word reaches the upper threshold value, the threshold value of the awakening word is not increased.
Preferably, the method for intelligently reducing the false wake-up probability of the voice control device further includes:
setting a lower threshold for the threshold of the awakening word;
when the threshold of the wake-up word reaches the lower threshold, the threshold of the wake-up word is not reduced.
Preferably, the threshold of the wake-up word decreases with the increase of the number of times of using the wake-up word, and is implemented as:
every time a wake-up word is used, the threshold value of the wake-up word is reduced according to a first preset proportion;
or the like, or, alternatively,
and after the awakening is performed for the first preset times, when the use times of a certain awakening word reach the first preset value, the threshold value of the certain awakening word is reduced according to a second preset proportion.
Preferably, the threshold of the wake word increases with time, and is implemented as:
increasing the threshold value of each awakening word according to a third preset proportion every other second preset time period;
or the like, or, alternatively,
and after every second preset number of awakening, increasing the threshold value of each awakening word according to a fourth preset proportion.
Some of the benefits of the present invention may include:
according to the method provided by the invention, the threshold value of each awakening word is adjusted through the awakening habit of the user, so that the probability of mistaken awakening of the voice control equipment is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a method for intelligently reducing false wake-up probability of a voice control device according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Fig. 1 is a flowchart of a method for intelligently reducing a false wake-up probability of a voice control device in an embodiment of the present invention, as shown in fig. 1, including the steps of:
and step S101, setting an initial threshold value for the awakening word. The initial threshold for each wake-up word may be the same or different. Typically, for ease of implementation, the initial threshold for each wakeup word is set to the same value.
Step S102, adjusting the threshold value of the awakening word according to a preset rule, wherein the preset rule comprises the following steps: the threshold value of the awakening word is reduced along with the increase of the use times of the awakening word; the threshold for the wake word increases with increasing time. The threshold may be decreased or increased by a fixed value, may be decreased or increased by a fixed ratio, or may be decreased by an adjustment coefficient which is a monotonic function of the number of times the wake-up word is used.
The threshold value of each awakening word is adjusted through the awakening habit of the user, so that the probability of mistaken awakening of the voice control equipment is reduced.
In order to avoid that the threshold is too high after the threshold is adjusted, which makes it difficult to wake up through the wake-up word, and an upper limit needs to be set for the threshold, in an embodiment of the present invention, the method for intelligently reducing the false wake-up probability of the voice control device further includes:
setting a threshold upper limit for the threshold of the awakening word;
when the threshold value of the awakening word reaches the upper threshold value, the threshold value of the awakening word is not increased.
In order to avoid that the threshold is too low after the threshold is adjusted, which may cause false wake-up, and a lower limit needs to be set for the threshold, in an embodiment of the present invention, the method for intelligently reducing the false wake-up probability of the voice control device further includes:
setting a lower threshold for the threshold of the awakening word;
when the threshold of the wake-up word reaches the lower threshold, the threshold of the wake-up word is not reduced.
In order that the change of the threshold value is not too drastic when adjusting the threshold value, in one embodiment of the present invention, the threshold value of the wake-up word is decreased as the number of times of use of the wake-up word is increased, and is implemented as:
every time a wake-up word is used, the threshold value of the wake-up word is reduced according to a first preset proportion; in this way, a real-time adjustment of the threshold value can be achieved.
Or the like, or, alternatively,
and after the awakening is performed for the first preset times, when the use times of a certain awakening word reach the first preset value, the threshold value of the certain awakening word is reduced according to a second preset proportion. The method can be suitable for users with different use frequencies.
In order that the threshold value does not change too strongly when the threshold value is adjusted, the threshold value of the wake-up word increases with the increase of time, and the threshold value is implemented as follows:
increasing the threshold value of each awakening word according to a third preset proportion every other second preset time period; in this way, a timing adjustment of the threshold value can be achieved.
Or the like, or, alternatively,
and after every second preset number of awakening, increasing the threshold value of each awakening word according to a fourth preset proportion. The method can be suitable for users with different use frequencies.
According to the method provided by the invention, the threshold value of each awakening word is adjusted through the awakening habit of the user, so that the probability of mistaken awakening of the voice control equipment is reduced.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (1)
1. A method for intelligently reducing false wake-up probability of voice control equipment is characterized by comprising the following steps:
setting an initial threshold value for the awakening word;
adjusting the threshold value of the awakening word according to a preset rule, wherein the preset rule comprises the following steps: the threshold value of the awakening word is reduced along with the increase of the use times of the awakening word; the threshold value of the wake-up word increases with increasing time;
the threshold value of the wake-up word is reduced along with the increase of the use times of the wake-up word, and is implemented as follows:
every time a wake-up word is used, the threshold value of the wake-up word is reduced according to a first preset proportion;
or the like, or, alternatively,
after waking up for a first preset number of times, when the using number of times of a certain wake-up word reaches a first preset value, the threshold value of the certain wake-up word is reduced according to a second preset proportion;
the threshold value of the wake-up word increases with increasing time, and is implemented as:
increasing the threshold value of each awakening word according to a third preset proportion every other second preset time period;
or the like, or, alternatively,
after waking up for a second preset number of times, increasing the threshold value of each awakening word according to a fourth preset proportion;
setting a threshold upper limit for the threshold of the awakening word;
when the threshold value of the awakening word reaches the upper threshold value limit, the threshold value of the awakening word is not increased;
setting a lower threshold for the threshold of the awakening word;
when the threshold of the wake-up word reaches the lower threshold, the threshold of the wake-up word is not reduced.
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CN111261143B (en) * | 2018-12-03 | 2024-03-22 | 嘉楠明芯(北京)科技有限公司 | Voice wakeup method and device and computer readable storage medium |
CN109920418B (en) * | 2019-02-20 | 2021-06-22 | 北京小米移动软件有限公司 | Method and device for adjusting awakening sensitivity |
CN109887507B (en) * | 2019-04-22 | 2021-03-12 | 成都启英泰伦科技有限公司 | Method for reducing similar voice command word misrecognition rate |
CN112102821B (en) * | 2019-06-18 | 2024-01-12 | 北京京东尚科信息技术有限公司 | Data processing method, device, system and medium applied to electronic equipment |
US11335331B2 (en) * | 2019-07-26 | 2022-05-17 | Knowles Electronics, Llc. | Multibeam keyword detection system and method |
CN110797051A (en) * | 2019-10-28 | 2020-02-14 | 星络智能科技有限公司 | Awakening threshold setting method and device, intelligent sound box and storage medium |
CN110989963B (en) * | 2019-11-22 | 2023-08-01 | 北京梧桐车联科技有限责任公司 | Wake-up word recommendation method and device and storage medium |
CN111445907B (en) * | 2020-02-28 | 2023-04-18 | 云知声智能科技股份有限公司 | Method and device for reducing false wake-up rate |
CN111445918B (en) * | 2020-03-23 | 2020-12-15 | 深圳市友杰智新科技有限公司 | Method and device for reducing false awakening of intelligent voice equipment and computer equipment |
CN111427293A (en) * | 2020-03-26 | 2020-07-17 | 广州立功科技股份有限公司 | Multichannel input sampling awakening method and device and control equipment |
CN111816178A (en) * | 2020-07-07 | 2020-10-23 | 云知声智能科技股份有限公司 | Voice equipment control method, device and equipment |
CN112634897B (en) * | 2020-12-31 | 2022-10-28 | 青岛海尔科技有限公司 | Equipment awakening method and device, storage medium and electronic device |
CN113488050B (en) * | 2021-07-09 | 2024-03-26 | 北京有竹居网络技术有限公司 | Voice wakeup method and device, storage medium and electronic equipment |
CN113963695A (en) * | 2021-10-13 | 2022-01-21 | 深圳市欧瑞博科技股份有限公司 | Awakening method, awakening device, equipment and storage medium of intelligent equipment |
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