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Natural Language
Processing (NLP) Solution

The Pioneer and Powerful Bangla (bn-BD) Spell & Grammar Checker with Integrated STT & TTS Functionalities

REVE Systems has developed a powerful Spell & Grammar Checker along with fully functional Speech-to-text (STT) and Text-to-speech (TTS) applications to advance the use of the Bangla (bn-BD) language in information technology. Powered by Machine Learning and AI, these tools empower users to seamlessly communicate in Bangla across digital platforms, much like how Grammarly and Google Assistant serve English speakers.

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Web API
Mobile Apps (Android & iOS)
Desktop Apps
Plugins
Browser Extensions
Mobile Service (Android)

Spell & Grammar Checker Features

  • Detects errors and provides corrections with the help of AI.
  • Provides an option to view the total number of errors in a text, accompanied by error cards with up to 10 suggestions, and includes color-coded error types and descriptions
  • Has the first ever Bangla input system or virtual keyboard with Quickboard V2 layout to support very swift Bangla typing for mobile platforms (Android and iOS).
  • Has a prediction engine with the virtual keyboard which predicts what the next Bangla word would be while typing.
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STT/TTS Features

  • Smoothly recognizes and processes human speech
  • Uses re-trainable Machine Learning models
  • Synchronized and/or non-synchronized speech recognition
  • Provides options to save or display an output
  • Supports all/vast number of platforms (Windows, Linux, Android, iOS, etc.)
  • Ease of use with different services like Android apps, office plugins, and web extensions
  • Deep learning techniques to outstand traditional STT/TTS

Highly Effective NLP Tool

Speech-to-text (STT)

Our dataset includes an impressive 10,000 hours of sentence-level annotated and validated gold standard data, along with 4,500 hours of word-level annotation and 300 hours of phoneme-level annotations. We also have an infinite volume of silver standard data to enhance the robustness of our models.

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Text-to-speech (TTS)

The tool is enriched with 1,000 hours of sentence and word-level annotated gold standard data, plus 200 hours of phoneme-level annotations. Additionally, there is an infinite volume of silver standard data. All of our gold standard data has been collected from both male and female speakers, ensuring it aligns with standard Bangla pronunciation guidelines.

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Completed Projects

Development of Bangla (bn-BD)
Spell & Grammar Checker, STT/TTS Applications

What Challenges Did the Client Face?

  • Bangla (bn-BD) is the official language in Bangladesh and West Bengal but there were no/limited Bangla spell & grammar checkers to use
  • It is one of the most difficult languages in the world and the applications needed to be accurate and highly effective
  • Different government offices and officials could use the STT/TTS for automated document preparation
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What Solution We Came Up With

  • A comprehensive, powerful, and easy-to-use Bangla Spell & Grammar Checker that works on the web as a browser extension, Windows, MS Office Add-in, Android, and iOS
  • STT/TTS applications for Windows/Linux/Mac, Android & iOS apps, web plug-ins, and MS Office add-ins
  • Support both Unicode and UNSI
  • Updated with the latest Bangla Academy Guideline and are capable of identifying contextual errors in Bangla (Bengali)

What are the Impacts?

  • Seamless and convenient document preparation
  • API integration across government apps and programs ensures hassle-free implementation
  • Streamlined workflows in government offices enhance efficiency
  • Cost-reduction on manpower yet better output
  • TTS is a great tool for visually impaired people
  • STT-TTS NLP-tasks can be utilized in automated Voice-Bot (for Bangla language)

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