Creative Technology Ltd (20240305949). METHOD FOR GENERATING CUSTOMIZED SPATIAL AUDIO WITH HEAD TRACKING simplified abstract
Contents
METHOD FOR GENERATING CUSTOMIZED SPATIAL AUDIO WITH HEAD TRACKING
Organization Name
Inventor(s)
Teck Chee Lee of Singapore (SG)
Geith Mark Benjamin Leslie of London (GB)
Mark Anthony Davies of Middlesex (GB)
Toh Onn Desmond Hii of Singapore (SG)
METHOD FOR GENERATING CUSTOMIZED SPATIAL AUDIO WITH HEAD TRACKING - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240305949 titled 'METHOD FOR GENERATING CUSTOMIZED SPATIAL AUDIO WITH HEAD TRACKING
The abstract describes a headphone for spatial audio rendering that utilizes databases, sensors, and digital signal processing to generate binaural audio signals for transducers in the headphone.
- The headphone includes a first database with impulse response pairs for a reference speaker location.
- A head sensor provides head orientation information to a second database with rotation filters for different azimuth and elevation positions.
- A digital signal processor combines the rotation filters with the impulse response pair to create the binaural audio signal.
- Efficiency is achieved by sampling the impulse response less frequently, reducing data measurements and time needed to capture impulse responses.
- Interpolation in the frequency domain generates impulse responses for data points between sampled points.
- Potential Applications:**
- Virtual reality gaming - Immersive audio experiences - Audio production and mixing
- Problems Solved:**
- Efficient creation of impulse response databases - Enhanced spatial audio rendering - Improved user experience in virtual environments
- Benefits:**
- High-quality spatial audio - Reduced data processing time - Enhanced realism in audio playback
- Commercial Applications:**
Spatial audio headphones could be used in gaming, virtual reality experiences, audio production studios, and entertainment venues to provide immersive sound experiences.
- Prior Art:**
Researchers in the field of spatial audio technology have explored various methods for creating realistic audio environments, including the use of head-related transfer functions (HRTFs) and impulse response databases.
- Frequently Updated Research:**
Ongoing research in spatial audio technology focuses on improving the accuracy and efficiency of rendering spatial audio for various applications.
- Questions about Spatial Audio Headphones:**
1. How does the use of rotation filters enhance the spatial audio experience? 2. What are the potential limitations of sampling impulse responses at coarser intervals?
Original Abstract Submitted
a headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. a head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. a digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. efficiencies in creating impulse response or hrtf databases are achieved by sampling the impulse response less frequently than in conventional methods. this sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
