Schroders has been granted a patent for a headphone system that utilizes databases of impulse response data and rotation filters to enhance spatial audio rendering. The system efficiently generates binaural audio signals by sampling impulse responses at coarser intervals and interpolating data, improving the process of creating audio response databases. GlobalData’s report on Schroders 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 Schroders, was a key innovation area identified from patents. Schroders's grant share as of July 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
Spatial audio rendering headphone with efficient impulse response generation
The granted patent US12022277B2 describes a system and method for generating binaural audio responses tailored to specific spatial audio configurations. The system includes a first database that stores Binaural Room Impulse Response (BRIR) or Binaural Room Transfer Function (BRTF) data for a target room, and a second database containing filters that facilitate the conversion of BRIR data from one reference position to another. A processor is employed to combine these filters with impulse responses from the first database, enabling the generation of BRIRs for various virtual speaker locations, which may correspond to different rooms. The system also incorporates audio rendering circuitry for outputting binaural signals and a head sensor to capture head orientation data, enhancing the spatial audio experience.
The methods outlined in the patent involve receiving input spatial audio directions and determining deviations from a reference position, which are then used to access the first database for transfer functions. The methods also include creating a second database through interpolation and generating personalized BRIRs based on individual listener characteristics. Additional features include the use of rotation filters and the application of division operations to derive filters in the second database. Overall, the patent presents a comprehensive approach to spatial audio processing, focusing on adaptability and personalization to improve the listener's auditory experience in various environments.
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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 across the world’s largest industries.
