Larsen & Toubro has filed a patent for a method and system for noise cancellation. The system includes a sensor positioned near the equipment to detect and generate a signal indicative of the noise. A speaker, processor, and memory are also included to generate a noise cancellation signal and produce corresponding sound. GlobalData’s report on Larsen & Toubro gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Larsen & Toubro, solar-powered EVs was a key innovation area identified from patents. Larsen & Toubro's grant share as of September 2023 was 32%. Grant share is based on the ratio of number of grants to total number of patents.
The patent is filed for a noise-cancellation system
A recently filed patent (Publication Number: US20230298557A1) describes a noise-cancellation system that includes a first sensor positioned near equipment to detect noise generated by the equipment. The first sensor generates a signal indicative of the noise, which is then used by a processor to generate a noise cancellation signal. A speaker positioned near the equipment is triggered by the processor to generate a sound corresponding to the noise cancellation signal.
The system can also include a second sensor positioned near the speaker to detect the sound generated by the speaker. The second sensor generates a signal indicative of the sound, which is used by the processor to determine the effectiveness of the sound generated by the speaker for noise cancellation. This determination is made by comparing the second signal with the first signal and the noise cancellation signal. Based on this comparison, the processor can tune the noise cancellation signal to improve its effectiveness.
Another embodiment of the invention is a noise cancellation system integrated into a cooling device. This system includes a plurality of sensors positioned near noise-generating sources and a plurality of speakers. The sensors detect the noise generated by the sources, and the speakers generate sound corresponding to a noise cancellation signal generated by the processor. The system can also include sensors to detect the sound generated by the speakers, allowing the processor to determine the effectiveness of the speakers for noise cancellation. The noise cancellation signal can be tuned based on this determination.
Additionally, the patent describes a method of noise cancellation that involves receiving a signal indicative of the noise generated by equipment, generating a noise cancellation signal based on this signal, and triggering a speaker to generate sound corresponding to the noise cancellation signal.
Overall, this patent presents various noise cancellation systems and methods that utilize sensors, speakers, and processors to detect and counteract noise generated by equipment or noise-generating sources. The systems aim to improve noise cancellation effectiveness by analyzing sensor data and tuning the noise cancellation signal accordingly.