Speech Regonition

What is Speech Regonition? And how does it work?

Speech recognition is a new technological development that allows the users to speak and talk to their devices such as computer and mobile phones and give commands and instructions to be fulfilled by the system. The dedicated software recognizes the commands and converts them into a machine-readable format for performing the asked action. The use of other input methods such as typing, selecting options etc. has seen a drastic fall after the introduction of speech recognition virtual agents such as Cortana by Microsoft, voice recognition feature for google search etc.

How does it work?

A speech recognition software’s algorithms combine both language and acoustic modelling in order to recognize and distinguish different words and provide higher accuracy. Language modelling helps match the spoken words with actual words to avoid any mistake in between the words that sound similar, whereas acoustic modelling helps to recognise the language units with the audio signals.

The current speech recognition system is largely based on hidden Karkov models which help in improving overall efficiency and accuracy.

Uses: -

Speech recognition has tons of applications in distinct industries. Some of them are listed below: -

  1. Military: - The military has been actively using this system in many operations such as training air traffic controllers, in helicopters as well as fighter jets. The pilots use this tech to give commands to the auto-pilot, set steering coordinates as well as adjust radio frequencies.
  2. Education: - Learning a second language, improving spoken proficiency skills, listening to new words pronunciation etc. are some uses of this technology in the education sector. Now the blind students are able to use the computer properly by giving and listening to spoken commands and messages. Having interactions about a particular topic with the computer helps the students to understand the subject better.
  3. Day-to-Day life: - Voice search, speech-to-text, voice calls etc. have made the life of the people really easy and more efficient.

Positives and Negatives: -
Although there are continuous developments in this sector every now and then to make it better, the speech recognition system still has a lot of work to be done in order to make it appeal to an even wider public. The biggest positive of this system is that it is easier to use and now is being more readily available to the public to test it out themselves.

The negative part is the lack of support to many languages other than English and its inability to capture and present words due to different accents and pronunciation style of the people which lead to a higher degree of inaccuracy. Plus, to use it properly, the users must have a quiet background with no noise other than their voice which is practically impossible to achieve.

Conclusion: -

Overall, the industry has seen some massive recent developments which are expected to increase in number in order to make this technology a success in the near future. Features like background noise cancellation, support to non-English languages etc. are required for it to appeal to the people.


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