智能语音识别系统（Intelligent speech recognition system）

1、智能语音识别系统（Intelligent speech recognition system）The gas from the practice of a small series of Li will level | news (1) | I know my Encyclopedia | contribution drafts | Baidu home page | quit my encyclopedia my task I recommend Post Bar news page MP3 photo video library.Help set up homepage, natural,

2、 cultural, geographical, historical, living, social, artistic, character, economic, scientific, sports, core user 5th anniversary, NBAspeech recognition systemmedical aircraftThe application of speech recognition technology can be divided into two directions: one is the large vocabulary continuous s

3、peech recognition system, dictation machine is mainly used in computer, and voice information service system combined with the telephone network or the Internet, these systems are implemented in the calculation of machine platform; another an important direction of development is the application of

4、small and portable audio products, such as wireless mobile phone on the dial, voice control, automotive equipment, intelligent toys, remote control of home appliances and other applications, these applications are the use of special hardware system, especially the special chip of voice signal proces

5、sing has developed rapidly in recent years (Application Specific Integrated Circuit, ASIC) and the speech recognition system on chip (System on Chip, SOC) the emergence of.CatalogHistoryVoice dialing in application domain telephone communicationCar speech controlIndustrial control and medical fieldP

6、ersonal digital assistantIntelligent toyHome appliance remote controlFunctional historyVoice dialing in application domain telephone communicationCar speech controlIndustrial control and medical fieldPersonal digital assistantIntelligent toyHome appliance remote controlFunctional characteristicsExpa

7、nd the history of this editAs early as the invention of computers, the idea of automatic speech recognition has been put on the agenda, and early vocoder can be regarded as the embryonic form of speech recognition and synthesis. And the Radio Rex toy dog produced in 1920s is probably the earliest la

8、nguage car speech intelligent identification system1 tone recognizer, which can bounce off the base when the dogs name is called. The earliest computer based speech recognition system was developed by AT&T Baer laboratory, Audrey speech recognition system, which can recognize 10 English numerals. Th

9、e identification method is to track formant in speech. The system achieves a 98% accuracy rate. By the end of the 1950s, the Denes of the London of (Colledge) had added grammatical probability to speech recognition. In 1960s, artificial neural networks were introduced to speech recognition. The two

10、major breakthroughs in this era are linear predictive coding, Linear, Predictive, Coding (LPC), and dynamic time warping Dynamic, Time, and Warp technologies. The most important breakthrough of speech recognition technology is the application of hidden Markov model Hidden, Markov and Model. From the

11、 relevant mathematical reasoning proposed by Baum, through the study of Labiner and others, Li Kaifu of Carnegie Mellon University finally realized the first large vocabulary speech recognition system based on Hidden Markov model Sphinx. Since then, technically speaking, voice recognition has not br

12、oken away from the HMM framework. Although researchers have been trying to popularize the dictation machine over the years, speech recognition technology has not yet been able to support unlimited fields, and unlimited speakers have been used.Edit this section of the application areaVoice dialling f

13、or telephone communicationEspecially in medium and high-end mobile phones, voice dialing is now common. As the price of voice recognition chips is lowered, voice dialing will also be available on regular phones.Car speech controlSince the drivers hand must be placed on the steering wheel during the

14、course of the car, a hands-free telephone communication with voice dialing is required to make a call on the car. In addition, the operation of the satellite navigation and positioning system (GPS) of the vehicle, the operation of the automobile, air conditioning, lighting and audio equipment can al

15、so be conveniently controlled by voice.Industrial control and medical fieldWhen the operators eye or hand has been occupied,The best way to increase control is to increase the speech interaction interface between a person and a machine. The voice commands the machine, and the machine responds by voi

16、ce.Personal digital assistantVoice interface for personal digital assistant (Personal, Digital, Assistant, PDA). PDA is very small in size, and human-computer interface has always been one of the bottlenecks in its application and technology. The use of keyboards on PDA is very inconvenient due to t

17、he composition of the speech recognition systemNow, the method of handwritten character recognition is used to input and query information. However, this approach still makes the user feel very inconvenient. Now, the industry agrees that the best human-computer interface for PDA is the interactive m

18、ethod of using speech as a transport medium, and has a small number of applications. With the improvement of speech recognition technology, it can be predicted that voice will become the main human-computer interaction interface of PDA in the near future.Intelligent toyWith speech recognition techno

19、logy, we can talk to smart dolls, voice commands on toys, simple tasks, and even electronic watchdogs with voice locks. Smart toys have great market potential, and the key is to reduce the price of voice chips.Home appliance remote controlVoice can control the TV, VCD, air conditioning, electric fan

20、 and curtain, and a remote control to home appliances are controlled by voice, so, can let the headache of various electrical operation becomes easy. In addition to the applications mentioned above, the application of speech recognition chips in other areas can be said to be too numerous to list. Wi

21、th the development of the special chip for speech recognition, it will bring great convenience to people.Edit this paragraph featuresCompared with the two development directions of speech recognition technology, they have different characteristics because they are based on different computing platfo

22、rm. Large vocabulary continuous speech recognition system is generally based on the PC platform, and the center processor speech recognition chip is a low-power, low-cost smart chip, with one or multiple PC machine compared to its processing speed, storage capacity is very limited, so these are achi

23、eved by special chip the speech recognition system has the following characteristics: 1, for the speech recognition system, small vocabulary, which is only able to identify 10100. Only in recent one or two years has the continuous digital or continuous speech recognition chip. 2, it is generally lim

24、ited to the realization of specific speech recognition, that is, the user needs to let the user learn or train the recognized words first. This kind of recognition function has no restrictions on language, dialect and entry. Some chips can also realize non-specific speech recognition, that is, the p

25、re compiled sentence code will be trained and loaded into the chip, and users do not need to learn and apply directly. However, this type of identification function is only applicable to the specified language and dialect, and the identified statements are limited to pre - trained sentences. 3, the

26、chip constitutes a complete speech recognition system. Therefore, in addition to the speech recognition function, in order to have a good man-machine interface and identification verified as correct or not, it must also have a voice prompt (speech synthesis) and voice playback (voice codec records)

27、function. 4, most of the real-time system, that is, when the user finished the words to be identified, the system immediately complete the identification function and respond, which requires higher speed of the circuit operation. 5, in addition to requiring the best possible identification performan

28、ce, but also requires the volume as small as possible, high reliability, power consumption, low prices and so on. More albumsReference materialOneCharacteristics of vehicle intelligent identification control systemHttp://product/detail_124700.htmlOpen classification:Artificial intelli

29、genceSpeech recognition system:What are the Related words, I will perfect themBaidu encyclopedia entries, reference purposes only,If you need to solve specific problems (especially in the fields of law, medicine, etc.), you are advised to consult a professional in the field.The 87 entries help add t

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