Schroders has been granted a patent for a headphone system that enhances spatial audio rendering. It utilizes databases for impulse response data and rotation filters, allowing efficient generation of binaural audio signals. The system reduces data sampling frequency, streamlining the creation of impulse response databases through interpolation techniques. 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 June 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 outlines a system and method for generating binaural audio responses tailored to specific spatial audio configurations. The system includes a first database containing Binaural Room Impulse Response (BRIR) or Binaural Room Transfer Function (BRTF) data for a target room, and a second database with 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 and a head sensor to measure head orientation, enhancing the spatial audio experience.
The methods described 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 appropriate transfer functions. The methods further detail the creation of a second database through interpolation and the generation of personalized BRIRs based on individual listener characteristics. Additionally, the patent specifies that the second database may include rotation filters and filters derived through division operations. Overall, the patent presents a comprehensive approach to spatial audio rendering, focusing on adaptability and personalization in audio experiences.
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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.
