MUMBAI, India, July 24 -- Intellectual Property India has published a patent application (202611060215 A) filed by Manipal University Jaipur on May 12, 2026, for An Acoustic Traffic Density Estimation System.
Inventors include Soham Kolekar; and Dr Sandeep Kumar Sharma.
The application for the patent was published on July 17, 2026, under issue no. 29/2026.
Abstract: The present invention relates to an acoustic traffic density estimation. The system comprises an edge node mounted above a roadway and including a linear microphone array and an edge processing unit, wherein the microphones are arranged with predefined spacing inside a weatherproof enclosure and the edge processing unit captures audio signals and performs local processing; a signal processing module adapted to perform spectral isolation within 20 Hz to 200 Hz, determine spatial localization using time difference of arrival, apply beamforming with null steering to suppress cross-axis interference, and perform de-duplication by merging acoustic signals with greater than 95% similarity; a telemetry module adapted to transmit processed metadata using MQTT protocol; and a cloud orchestration module adapted to compute a traffic density index based on root mean square energy, dynamically extend traffic signal duration when a threshold is exceeded, detect siren frequencies between 700 Hz and 1.5 kHz for signal pre-emption, and estimate queue length using spatial acoustic mapping.
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