Headphone Audio Reproduction Using Dual-Range Channel Providers
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Solution Overview
Problem
Conventional surround sound systems fail to accurately reproduce auditory events close to the listener's head, lacking the ability to create proximity effects, which limits the immersion and realism in audio experiences, especially in virtual reality and interactive gaming scenarios.
Innovation Solution
An arrangement and method for a headphone assembly that includes a first and second headphone channel, driven by a basic channel provider and a proximity channel provider, respectively, to create multidimensional sound effects by subdividing the acoustic scene into distant and close ranges, using head-related transfer functions and binaural room impulse responses to simulate audio signals corresponding to audio objects and sound sources at varying distances and angles, allowing for natural perception of audio objects and sound sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional surround sound systems are used, then distant sound effects can be reproduced, but proximity effects for close-range audio objects cannot be achieved
Solution Approach 1:
The acoustic scene is divided into two distinct ranges: a distant range for conventional surround sound reproduction and a close range for proximity effects. This segmentation allows each system to optimize for its specific spatial zone, resolving the contradiction between general reproduction capability and precise close-range spatial accuracy.
Solution Approach 2:
The invention adds a new spatial dimension by introducing close-range audio objects that appear in front of the listener's ears, complementing the traditional horizontal surround sound arrangement. This dimensional extension enables proximity effects while maintaining distant sound reproduction, thereby improving overall adaptability without sacrificing spatial accuracy.
2Ease of operation
If conventional surround sound systems are used, then audio can be reproduced in a sweet spot, but immersion and realism are limited
Solution Approach 1:
By segmenting the audio reproduction into distant and close ranges, the system maintains the ease of operation (sweet spot positioning) for conventional surround sound while simultaneously enhancing immersion quality through close-range proximity effects that create more realistic spatial perception.
Solution Approach 2:
The invention merges conventional surround sound systems with close-range audio object technology, combining the ease of operation of traditional systems with the enhanced immersion of proximity effects. This fusion allows the system to maintain both characteristics without compromising either.
3Adaptability or versatility
If more loudspeakers are added to create focused sources, then proximity effects can be achieved, but system complexity increases
Solution Approach 1:
The invention introduces an intermediary processing system that generates close-range audio objects through signal processing rather than requiring additional physical loudspeakers. This intermediary approach enables proximity effects while avoiding the complexity of adding more hardware components.
Solution Approach 2:
The invention replaces the mechanical approach of adding more loudspeakers with a signal processing-based solution. By using digital signal processing to create close-range audio objects, the system achieves enhanced spatial reproduction capability without increasing the physical complexity of the loudspeaker arrangement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the reproduction of realistic 2D or 3D sound effects that simulate audio objects and sound sources at any distance and angle, enhancing the immersion and realism in audio experiences by providing both distant and close-range sound effects, effectively addressing the limitations of conventional surround sound systems.
Implementation Method 1
using head-related transfer functions and binaural room impulse responses to simulate audio signals corresponding to audio objects and sound sources at varying distances and angles
Implementation Method 2
using head-related transfer functions and binaural room impulse responses to simulate audio signals corresponding to audio objects and sound sources at varying distances and angles
Data Source
AI summary
An arrangement, for reproducing audio data of an acoustic scene, adapted for generating audio signals for at least a first and a second headphone channel of a headphone assembly, the audio signals corresponding to at least one audio object and/or sound source in the acoustic scene comprising at least one given close range and at least one given distant range arranged around a listener, the arrangement comprising a first headphone channel; a second headphone channel; a basic channel provider comprising at least a basic system adapted for reproducing audio signals corresponding to at least one audio object and/or sound source arranged in at least one distant range; a proximity channel provider comprising at least a proximity system adapted for reproducing audio signals corresponding to at least one audio object and/or sound source arranged in at least one close range.