There are voice converting softwares that convert text to voice but voice recognition is identifying the user’s voice and responding to his/her queries. There are different needs and how the software responds to requirements like reading emails, giving alerts, get ticket for an event etc.,.
People when they are taking lengthy driving to reach their home or working place they want to spend their time usefully. Complex sound signal is broken into the smaller sub-sounds and different levels are created. At the top level one have complex sounds, which are made of several simpler sounds. On lower level, we create more basic and shorter and simpler sounds. The machine will check for simple and probability rules at lower levels. Upper level deterministic rule will be applied to trace meaning of complex expressions.
Computationally, it is a problem in which a sound pattern has to be recognized or classified into a category that represents a meaning to a human. Every acoustic signal can be broken in smaller more basic sub-signals.
Four steps in neural net work approaches
Digitalize the speech that we will like to recognize
Sampling rate will be 8000 samples per second
Computation to features of spectral domain of the speech
One 10msec section is called a frame
Neural Network classifies features into phonetic-based categories
This technology uses artificial intelligence to give quick reply to your voice based queries .Google Android and Apple Siri are the 2 applications of voice recognition technology. They are becoming popular. In future we hope to have much more application throughout the world that could be integrated with other 3rd party applications.
Why speech recognition has gained predominance?
There is increasing prevalence of laws that restrict the use of cell phones while driving. This has increased demand for these voice-based applications. Voice recognition software has been used in Google android, and Apple iOs. Their voice recognition gives results even when the sentences are not spoken in a low pitch also.
Apple iOs and Siri
Unlike past systems, though, you don’t need to use specific commands. One of Siri’s main features is it can understand natural language. You can ask, “Do I need a jacket today?” and Siri will pull up a weather report for you. The major downside to Siri, however, is that it only works on the iPhone 4S. Users with older iPhones or Android phones are out of luck. Some applications you can run that do similar things on your current phone.
Voice Actions doesn’t have Siri’s ability to understand natural language, but learning the preset commands isn’t hard. You can use Voice Actions to start calls, create and send email, listen to music, get directions, search Google and more. Siri can understand natural language. But it cannot tweet. It cannot undertake dictation. It can load a picture from Apple collections. It cannot read emails. Siri requires an internet connection when the phone does not have the net connection the system does not automatically switch from Siri to voice control.
Siri can only operate in English, French and German. Apple has assured that Chinese, Italian, Korean and Spanish will be integrated next year. Original Siri application was shut down by apple after the I phone 4 was released was able to accomplish tasks through other services, could order movie or concert tickets, book restaurant reservations using open table and call a local cab via taxi magic. Siri can pull up directions, transcribe written notes, create Calendar appointments and it will of day to day takes you are doing. Siri’s voice recognition technology is adept in interpreting even low volume speeches.
Apple favors yelp for local business reviews apple lists 18 applications Maps and yelp are meant for us users only. Siri is currently in the beta version and they may improve that inability for third party developers to tie their applications in to Siri.
Google voice actions
Google Voice Actions – Google Android had its own personal assistant option for a while now. It’s called Voice Actions, and it’s a part of the Google Voice Search app for Android phones. You do need Android 2.2 or above to run this application. Some common features such as Android’s built in Web browser and calendar, remained completely inaccessible to a blind or visually impaired user. Now other voice based applications are available in Google Majel
People with disabilities
People with disabilities can benefit from speech recognition programs. For individuals that are Deaf or Hard of Hearing, speech recognition software can be used to automatically generate a closed-captioning of conversations such as discussions in conference rooms, classroom lectures, and/or religious services.
Speech recognition is also very useful for people who have difficulty using their hands, ranging from mild repetitive stress injuries to involved disabilities that include using conventional computer input devices. In fact, people who used the keyboard a lot and developed RSI became an urgent early market for speech recognition. Speech recognition is widely used in deaf telephony, such as voicemail to text, relay services, and captioned telephone services. Individuals with learning disabilities will have problems with thought-to-paper communication can utilize the software for easy and effective communication.
Bing also offers applications that can be versatile with Google Android and Apple iOs. Voice recognitions has been steadily increasing since the year 2004 and now most of the countries are now eager to use either Google android or Apple iOs 5.I may reach new heights quickly.















