CN113421569A - Control method for improving far-field speech recognition rate of playing equipment and playing equipment - Google Patents
Control method for improving far-field speech recognition rate of playing equipment and playing equipment Download PDFInfo
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- CN113421569A CN113421569A CN202110656253.4A CN202110656253A CN113421569A CN 113421569 A CN113421569 A CN 113421569A CN 202110656253 A CN202110656253 A CN 202110656253A CN 113421569 A CN113421569 A CN 113421569A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 230000005236 sound signal Effects 0.000 claims abstract description 6
- 230000017525 heat dissipation Effects 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G10L15/26—Speech to text systems
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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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Projection Apparatus (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a control method for improving far-field speech recognition rate of playing equipment and the playing equipment, wherein the control method specifically comprises the following steps: the method comprises the steps of firstly detecting an actual signal-to-noise ratio of the playing device according to a voice broadcast sound signal and a detected noise signal, then judging the relation between the actual signal-to-noise ratio and a preset signal-to-noise ratio threshold value, and when the actual signal-to-noise ratio is judged to be smaller than the preset signal-to-noise ratio threshold value, reducing the rotating speed of the cooling fan to be within the preset rotating speed threshold value by the control assembly. By adopting the control method, the purpose of reducing the rotating speed of the cooling fan in a short time is achieved, and the recognition rate of far-field voice of the playing equipment in the working process is effectively improved, so that the quality and the market competitiveness of the playing equipment using the control method are effectively improved.
Description
Technical Field
The invention belongs to the technical field of playing equipment, and particularly relates to a control method for improving far-field speech recognition rate of playing equipment and the playing equipment.
Background
With the development of speech recognition technology, various consumer electronics products have begun to popularize the application of speech technology. Through the voice technology, the hands of people are liberated, voice remote control is used, better experience is realized, even partial AI functions are realized, and the value brought to consumers by the voice technology is realized.
Projectors, also widely using voice technology; at present, the adopted voice technology is basically near-field voice technology, namely, a voice pickup (or a microphone) is used on a remote controller and then transmitted to a projector through Bluetooth, and a control system of the projector performs corresponding processing. The projector does not substantially employ far-field speech for several reasons: by adopting far-field voice, a plurality of microphones are needed and need to be arranged according to a certain mode, and the projection machine body needs to be provided with holes. Most importantly, because a high-temperature light source exists inside the projector, the light source needs to dissipate heat, so that the heat dissipation fan always works, the noise decibel value inside the projector is very high, and because the performance, the model and the working mode of the heat dissipation fan are different, the noise frequency, the decibel value and other characteristics generated by the fan have very large differences, and therefore, the noise characteristic extraction is difficult to be carried out on each projector fan. The inability to extract noise features also prevents targeted filtering of such noise in the control system, so that speech is mixed with the cooling fan noise inside the projector when recognizing the sound collected by the microphone. Therefore, the signal-to-noise ratio of the projector during voice recognition is reduced, the recognition rate is reduced, the possibility of wrong voice recognition is increased, and the functionality and the experience of the product during voice recognition are reduced.
Disclosure of Invention
In view of the above, the present invention provides a control method for improving far-field speech recognition rate, which solves the problem of low far-field speech recognition rate caused by high noise of a heat dissipation fan in a projector during operation in the prior art.
The invention also aims to provide a playing device applying the control method
In order to achieve the purpose, the technical scheme of the invention is realized as follows: a control method for improving far-field speech recognition rate of playing equipment specifically comprises the following steps:
s1, when the playing device identifies the trigger keyword, the playing device generates voice broadcast sound;
s2, detecting the actual signal-to-noise ratio of the playing device according to the voice broadcast sound signal and the detected noise signal;
s3, judging whether the actual signal-to-noise ratio is smaller than a preset signal-to-noise ratio, if so, executing S4; if not, go to S2;
s4, reducing the rotating speed of a cooling fan in the playing equipment to be within a preset rotating speed threshold value;
s5, detecting whether the playing equipment identifies further trigger keywords, if not, executing S6; if yes, returning to S2;
and S6, increasing the rotating speed of the cooling fan to an initial state.
Preferably, between S4 and S5, further comprising:
and detecting the internal temperature of the playing equipment, and adjusting the rotating speed of the heat dissipation fan and/or the light source power of the playing equipment according to the relation between the internal temperature and a preset temperature value.
Preferably, the rotating speed of the cooling fan and/or the light source power of the playing device are adjusted according to the relationship between the internal temperature and a preset temperature value, and the specific method includes:
when the internal temperature is higher than a preset temperature value, increasing the rotating speed of the heat radiation fan and/or reducing the power of the light source until the internal temperature is equal to the preset temperature;
and when the internal temperature is equal to a preset temperature value, the rotating speed of the heat radiation fan and the power of the light source are unchanged.
Preferably, the preset rotation speed threshold value comprises at least two preset rotation speed point values.
Preferably, when the internal temperature — preset temperature value is n ℃, the rotation speed of the cooling fan is increased by n%, where n is greater than 0.
Preferably, in S2, the detected noise includes an ambient noise transmitted to the playback device, a noise of the heat dissipation fan, and a noise when the playback device performs a voice announcement.
Preferably, before performing the S5, the method further includes: and (d) a step of passing a specific time t.
Preferably, t ≧ 10 s.
The second technical scheme of the invention is realized as follows: a playing device applying the control method comprises a playing device body, a control assembly, a heat dissipation fan and a sound production assembly, wherein the control assembly, the heat dissipation fan and the sound production assembly are all arranged in the playing device body;
when the control component identifies a triggering keyword, sending a feedback signal to the sound production component; the control assembly adjusts the rotating speed of the cooling fan and is used for improving the far-field voice recognition rate of the playing equipment when the actual signal-to-noise ratio is smaller than a preset signal-to-noise ratio value.
Preferably, the playing device further comprises a temperature detection component, and the temperature detection component is arranged on the playing device body.
According to the control method, after the playing device identifies the trigger keyword, the actual signal-to-noise ratio of the playing device is detected according to the voice broadcast sound signal and the detected noise signal, the relation between the actual signal-to-noise ratio and the preset signal-to-noise ratio threshold is judged, and when the actual signal-to-noise ratio is judged to be smaller than the preset signal-to-noise ratio threshold, the control assembly reduces the rotating speed of the cooling fan to be within the preset rotating speed threshold, so that the purpose of reducing the rotating speed of the cooling fan in a short time is achieved, the far-field voice identification rate of the playing device in the working process is effectively improved, and the quality and market competitiveness of the playing device using the control method are effectively improved.
Drawings
Fig. 1 is a logic block diagram of a control method for improving a far-field speech recognition rate according to embodiment 1 of the present invention.
Fig. 2 is another logic block diagram of a control method for improving a far-field speech recognition rate according to embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The control method for improving the far-field speech recognition rate of the playing device provided by embodiment 1 of the present invention is specifically as shown in fig. 1, and the method specifically includes the following steps:
s1, when the playing device identifies the trigger keyword, the playing device generates voice broadcast sound;
s2, detecting the actual signal-to-noise ratio of the playing device according to the voice broadcast sound signal and the detected noise signal;
s3, judging whether the actual signal-to-noise ratio is smaller than a preset signal-to-noise ratio, if so, executing S4; if not, go to S2;
s4, reducing the rotating speed of a cooling fan in the playing equipment to be within a preset rotating speed threshold value;
s5, detecting whether the playing equipment identifies further trigger keywords, if not, executing S6; if yes, returning to S2;
and S6, increasing the rotating speed of the cooling fan to an initial state.
The triggering keywords are keywords preset by the playing device, such as "Xiaoai classmates" of millet and "Xiaodu" of a Xiaodu smart screen; in addition, since the trigger keywords are trained in a large number of various scenes, the recognition rate is very high, and a plurality of dialects are supported.
In addition, the specific requirements of the preset numerical value of the preset signal-to-noise ratio are different according to different models and different scenes.
After the scheme is adopted, after the playing device identifies the trigger keyword, the actual signal-to-noise ratio of the playing device is detected according to the voice broadcast sound signal and the detected noise signal, then the relation between the actual signal-to-noise ratio and the preset signal-to-noise ratio threshold value is judged, and when the actual signal-to-noise ratio is judged to be smaller than the preset signal-to-noise ratio threshold value, the control assembly reduces the rotating speed of the cooling fan to be within the preset rotating speed threshold value, so that the aim of reducing the rotating speed of the cooling fan in a short time is fulfilled, the identification rate of far-field voice of the playing device in the working process is effectively improved, and the quality and market competitiveness of the playing device using the control method are effectively improved.
In addition, under the condition that the preset rotating speed threshold value is fixed, the detected noise is also fixed;
in addition, the preset rotating speed threshold is a set of numerical values, and the noise frequency data of the cooling fan is also a fixed numerical value under each preset value.
Further, as shown in fig. 2, between S4 and S5, there are further included:
and detecting the internal temperature of the playing equipment, and adjusting the rotating speed of the heat dissipation fan and/or the light source power of the playing equipment according to the relation between the internal temperature and a preset temperature threshold value.
Therefore, the rotating speed of the cooling fan and/or the light source power of the playing equipment are/is adjusted by detecting the internal temperature of the playing equipment and according to the relation between the internal temperature and the preset temperature threshold value, the purpose of improving the far-field voice recognition rate of the playing equipment is achieved, and the problems that the playing equipment is damaged due to overhigh internal temperature of the playing equipment are avoided.
Further, the rotating speed of the cooling fan and/or the light source power of the playing device are adjusted according to the relationship between the internal temperature and a preset temperature threshold, and the specific method comprises the following steps:
when the internal temperature is higher than a preset temperature value, increasing the rotating speed of the heat radiation fan and/or reducing the power of the light source until the internal temperature is equal to the preset temperature;
and when the internal temperature is equal to a preset temperature value, the rotating speed of the heat radiation fan and the power of the light source are unchanged.
Further, the preset rotational speed threshold value comprises at least two preset rotational speed point values.
Therefore, at least two preset rotating speed point values are set, one numerical value can be selected in the conversation process of the playing device, and therefore experience feeling is improved, or efficiency is improved.
Further, when the internal temperature-preset temperature value is n ℃, the rotating speed of the cooling fan is increased by n%, wherein n is greater than 0.
In a specific implementation process, when the internal temperature of the playing device exceeds a preset temperature value by 5 ℃, the rotating speed of the cooling fan is correspondingly increased by 5%, and when the internal temperature is detected to be reduced to be equal to the preset temperature value, the rotating speed of the cooling fan is reduced to an initial state.
Further, in S2, the detected noise includes an environmental noise transmitted to the playback device, a noise of the heat dissipation fan, and a noise when the playback device performs a voice announcement.
Further, before performing the S5, the method further includes: and (d) a step of passing a specific time t.
Further, t is more than or equal to 10 s.
Example 2
The playing device to which the control method of embodiment 1 is applied provided by embodiment 2 of the present invention includes a playing device body, a control component, a heat dissipation fan, and a sound generating component, where the control component, the heat dissipation fan, and the sound generating component are all disposed in the playing device body;
when the control component identifies a triggering keyword, sending a feedback signal to the sound production component; the control assembly adjusts the rotating speed of the cooling fan and is used for improving the far-field voice recognition rate of the playing equipment when the actual signal-to-noise ratio is smaller than a preset signal-to-noise ratio value.
After the scheme is adopted, the playing device comprising the control method in the embodiment 1 is applied, so that the purpose of reducing the rotating speed of the cooling fan in a short time is achieved, the recognition rate of far-field voice of the playing device in the working process is effectively improved, and the quality and market competitiveness of the playing device using the control method are effectively improved.
Further, this playback devices still includes temperature-detecting component, temperature-detecting component sets up playback devices body.
Like this, through this internal temperature detect assembly that sets up of playback devices, not only realized improving the purpose of playback devices far field speech recognition rate like this, but also avoided the inside high temperature of playback devices, damaged playback devices's problem.
In addition, the playing device described in embodiment 2 of the present invention is preferably a projector.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A control method for improving far-field speech recognition rate of playing equipment is characterized by specifically comprising the following steps:
s1, when the playing device identifies the trigger keyword, the playing device generates voice broadcast sound;
s2, detecting the actual signal-to-noise ratio of the playing device according to the voice broadcast sound signal and the detected noise signal;
s3, judging whether the actual signal-to-noise ratio is smaller than a preset signal-to-noise ratio, if so, executing S4; if not, go to S2;
s4, reducing the rotating speed of a cooling fan in the playing equipment to be within a preset rotating speed threshold value;
s5, detecting whether the playing equipment identifies further trigger keywords, if not, executing S6; if yes, returning to S2;
and S6, increasing the rotating speed of the cooling fan to an initial state.
2. The control method for increasing far-field speech recognition rate of playback device according to claim 1, further comprising between S4 and S5:
and detecting the internal temperature of the playing equipment, and adjusting the rotating speed of the heat dissipation fan and/or the light source power of the playing equipment according to the relation between the internal temperature and a preset temperature value.
3. The control method for improving the far-field speech recognition rate of the playing device according to claim 2, wherein the rotating speed of the cooling fan and/or the power of the light source of the playing device is adjusted according to the relationship between the internal temperature and a preset temperature value, and the specific method is as follows:
when the internal temperature is higher than a preset temperature value, increasing the rotating speed of the heat radiation fan and/or reducing the power of the light source until the internal temperature is equal to the preset temperature;
and when the internal temperature is equal to a preset temperature value, the rotating speed of the heat radiation fan and the power of the light source are unchanged.
4. The control method for improving the far-field speech recognition rate of the playback device as claimed in claim 3, wherein the predetermined speed threshold comprises at least two predetermined speed point values.
5. The control method for improving the far-field speech recognition rate of the playing device according to any one of claims 1 to 4, wherein when the internal temperature-preset temperature value is n ℃, the rotation speed of the cooling fan is increased by n%, where n is greater than 0.
6. The control method of claim 1, wherein in S2, the detected noise includes ambient noise transmitted to the playback device, noise of the heat dissipation fan, and noise of the playback device during speech broadcasting.
7. The control method for increasing far-field speech recognition rate of playing device according to claim 1, wherein before executing S5, the method further comprises: and (d) a step of passing a specific time t.
8. The control method for improving the far-field speech recognition rate of the playing device according to claim 7, wherein t ≧ 10 s.
9. A playing device to which the control method according to any one of claims 1 to 8 is applied, comprising a playing device body, a control component, a heat dissipation fan and a sound production component, wherein the control component, the heat dissipation fan and the sound production component are all arranged in the playing device body;
when the control component identifies a triggering keyword, sending a feedback signal to the sound production component; the control assembly adjusts the rotating speed of the cooling fan and is used for improving the far-field voice recognition rate of the playing equipment when the actual signal-to-noise ratio is smaller than a preset signal-to-noise ratio value.
10. The playback device of claim 9, further comprising a temperature detection component disposed on the playback device body.
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| CN202110656253.4A CN113421569A (en) | 2021-06-11 | 2021-06-11 | Control method for improving far-field speech recognition rate of playing equipment and playing equipment |
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| CN202110656253.4A CN113421569A (en) | 2021-06-11 | 2021-06-11 | Control method for improving far-field speech recognition rate of playing equipment and playing equipment |
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| CN110930991A (en) * | 2018-08-30 | 2020-03-27 | 阿里巴巴集团控股有限公司 | Far-field speech recognition model training method and device |
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| CN111972920A (en) * | 2019-05-24 | 2020-11-24 | 科勒(中国)投资有限公司 | Control method, intelligent mirror and mirror cabinet |
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2021
- 2021-06-11 CN CN202110656253.4A patent/CN113421569A/en active Pending
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| US20080312918A1 (en) * | 2007-06-18 | 2008-12-18 | Samsung Electronics Co., Ltd. | Voice performance evaluation system and method for long-distance voice recognition |
| CN103198829A (en) * | 2013-02-25 | 2013-07-10 | 惠州市车仆电子科技有限公司 | Method, device and equipment of reducing interior noise and improving voice recognition rate |
| CN104375362A (en) * | 2014-10-31 | 2015-02-25 | 深圳市帅映科技有限公司 | Automatic noise lowering method, device and system of projector |
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