Masimo has filed a patent for a compact soundbar that uses a transducer arrangement and signal processing system to generate a Stereo Dimensional Array (SDA) effect with effective interaural crosstalk cancelation. The system allows for the reproduction of stereo or multiple channels of home-theater audio using only three mid-bass drivers. GlobalData’s report on Masimo gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Masimo, Medical data analysis was a key innovation area identified from patents. Masimo's grant share as of September 2023 was 59%. Grant share is based on the ratio of number of grants to total number of patents.

A compact soundbar with multi-channel loudspeaker system

Source: United States Patent and Trademark Office (USPTO). Credit: Masimo Corp

A recently filed patent (Publication Number: US20230319478A1) describes a loudspeaker system that aims to improve sound quality and create a more immersive listening experience. The system includes a left transducer, a middle transducer, and a right transducer. The left and right transducers are offset from the middle transducer in opposite directions.

The system also includes signal processing electronics that receive left and right audio signals and generate crosstalk cancelation signals. These cancelation signals are inverted instances of the audio signals and are used to drive the transducers. The left transducer is driven based on the right crosstalk cancelation signal, while the middle transducer is driven based on both the left and right audio signals. The right transducer is driven based on the left crosstalk cancelation signal.

The signal processing electronics can also receive a center audio signal and drive the middle transducer based on this signal in addition to the left and right audio signals. The cancelation signals can be provided with a time delay between 0.1 ms and 0.3 ms.

The system is designed to produce sound that cancels out unwanted noise and creates a more realistic and immersive listening experience. It can create a phantom sound source that appears to be coming from a location separate from the transducers.

In another embodiment, the system includes only the left and right transducers, without the middle transducer. The signal processing electronics generate crosstalk cancelation signals that are inverted and time delayed instances of the audio signals. The left transducer produces sound that cancels out noise from the right transducer at the listener's left ear, while the right transducer cancels out noise from the left transducer at the listener's right ear.

Overall, this patent describes a loudspeaker system that utilizes signal processing techniques to improve sound quality and create a more immersive listening experience. It has potential applications in various audio systems, including soundbars.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies