MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202631030964 A) filed by Dr Srirupa Das; Prof. Dr Abhijit Das; and Prof. Dr Debashis De, Kolkata, West Bengal, on March 14, for 'a smart singing accuracy enhancer system.'
Inventor(s) include Dr Srirupa Das; Prof. Dr Abhijit Das; and Prof. Dr Debashis De.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a system and method for enhancing singing accuracy during Indian Classical Music practice. The system receives vocal input either through a live microphone or a pre-recorded audio source along with parameters including selected raga, reference pitch, and starting note. The analog vocal signal is converted into a digital frequency stream using an analog-to-digital conversion unit and processed by an analysis module. The system extracts the fundamental frequency of each sung note and compares it with reference data stored in a raga database containing attributes such as ascending notes, descending notes, and forbidden notes. If a forbidden note is detected, the system generates a wrong-note alert with a corresponding time-stamp. In the absence of such violations, a pitch deviation detection module determines whether the note is correctly pitched, over-pitched, or under-pitched using a deep pattern analysis algorithm, and provides corrective feedback with time-stamp to the learner."
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