Speech Recognition System


Speech recognition system

Speech recognition is the process of converting a speech signal into digital information. It is considered one of the most difficult technical tasks associated with artificial intelligence systems. Machine speech recognition and audio responses to users are already widely used in life and mass-produced by businesses.

A decrease in the cost of computing resources has led to a leap in speech technology development. Today it has become profitable to create large neural networks and use them to process data for speech recognition and other tasks. People have already stopped noticing that they communicate with a machine, not a person when they call a telecom operator or a bank.

The latest advances in machine learning are used for high-quality speech recognition. Algorithms of neural networks with a high level of learning and large lexicons help achieve high recognition accuracy.

Speech Recognition

Where to use speech recognition systems

Today, there are four main areas in which the technology of speech recognition with machine learning can prove itself:

  1. Recognition for voice service and interactive voice response systems. They are common in call centres, self-service points, and online banking. Everyone is used to their greetings and voice menus.
  2. Voice recognition and verification. Large banks use it for the identification of customers by voice print, for voice signatures, and in security systems.
  3. Speech analytics of calls and negotiations. It is designed to assess customer reviews and satisfaction, improve the quality of operators’ work, and identify trends in contacting support services and sales departments.
  4. Voice control. We use voice control in many areas. In everyday life, it can control a smart home, electronic devices, even email or a browser. In the automotive industry, it is used for navigators now, and it will be helpful for driving unmanned vehicles in the near future.

What IT giants offer

Leading tech companies, namely Apple, Microsoft, Amazon, and Google, have been offering their speech recognition services for a long time. They are called Siri (2011), Cortana (2014), Alexa (2014), and Assistant (2016), respectively.

Apple Siri

Siri was the first mainstream voice-activated virtual assistant. In October 2011, when Apple first integrated it into the iPhone 4s, such a mobile assistant became a breakthrough. It allowed people to use voice to order a taxi, buy a ticket to a concert, or search for reviews of a restaurant of interest.

Today, Siri’s capabilities include advanced speech recognition features: fact-checking, translating texts, scheduling and making appointments, transferring money between bank accounts or cards, comparing stocks and monitoring quotes, managing other smart devices, and more. And thanks to new developments from Apple, such as the Overton machine learning system and the Shortcuts app, Siri can be improved.

Microsoft Cortana

Microsoft was the second corporation to introduce a voice-activated virtual assistant called Cortana. It had been developing the assistant since 2009, but it did not become a pioneer since Cortana was released only in April 2014 and first on desktops.

Today, Cortana also works on smart speakers and smartphones. It can handle a variety of tasks, from helping with calendar entries and taking notes to ordering groceries from an online store.

Amazon Alexa

For the first three years, the Alexa voice virtual assistant was only used in Amazon’s products. Since December 2017, the company has been providing businesses with access to it through the Amazon Web Services cloud. Amazon partnered with Intel to release Alexa Voice Service development kits allowing third-party companies to embed Alexa into their devices.

AWS also includes Amazon Transcribe, a simpler speech recognition and speech-to-text service. It allows developers to add speech transcription functionality to their applications. The service uses deep learning to automatically recognize speech and quickly and accurately convert it to text.

Google Assistant

Google also has a voice-activated virtual assistant called Google Assistant. It has a wide variety of functions. For example, it can make payments via Google Pay or troubleshoot a smartphone. Unlike analogues, it can participate in a two-way conversation using a natural language processing algorithm. Google also provides an SDK through Actions that allows third-party developers to embed voice functionality into their AI applications.

Besides Assistant, there is another Google speech recognition product called Speech-to-Text. It is an API for connecting to artificial intelligence via the cloud. Deep learning neural network algorithms are used for speech-to-text recognition. The tool works with 120 languages and allows you to control with voice, transcribe audio from call centres, process streaming or pre-recorded audio in real time.

How to improve the quality of service

There are many use cases for speech recognition, but most business people would like to manage the flow of contacts to filter potential buyers and thus influence sales. The automatic speech recognition system can increase customer loyalty through personalized offers and prompt responses from the call centre. After all, all the useful information is already in the customers’ speech, and you only need to process it.

Such systems are not limited to simple distribution of incoming and outgoing calls. They not only save time for call operators and reduce the burden on them but also facilitate the work of other departments and services of the company:

  • for the management, they improve the quality of order processing;
  • for couriers, they speed up delivery;
  • for service centre employees, they identify problems.

Replacing outdated methods with at least one speech-to-text recognition program will allow the company to reduce the cost of implementing and using call centres by 35%. And the analysis of the data provided by such a program will help increase sales at least twice.

Bring speech recognition to your business

Polygant offers advanced speech recognition technology solutions that can help you optimise your business processes. Our developers are ready to create or integrate a speech recognition program of any complexity with adaptation to your area of activity.

We have 8 years of experience in machine learning and automatic speech recognition. We develop applications and services for customers the same way we do it for ourselves. To find out the cost of work and the development time frame for specific tasks, fill out the application form, and we will immediately contact you.

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