Dual-Orientation Speaker for Immersive Audio Rendering
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Solution Overview
Problem
Existing surround sound systems require multiple speaker types and specific placements, which limits flexibility and increases complexity and cost, especially when trying to incorporate immersive audio with height cues without using ceiling or high wall speakers.
Innovation Solution
A dual-orientation speaker system that can be placed vertically or horizontally, wirelessly transmitting its orientation to a renderer and receiving updated speaker feeds, featuring both upward-firing and front-firing drivers, and using sensors to adjust audio signals based on orientation, allowing for flexible placement and immersive audio rendering without the need for additional height speakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple speaker types with specific placements are used to achieve immersive audio with height cues, then audio immersion quality is improved, but system complexity and installation cost increase
Solution Approach 1:
The patent applies universality by designing a single speaker type that can perform multiple functions: it can be placed in different orientations (vertical, horizontal, angled) and the renderer dynamically assigns different audio feeds to the same speaker based on its detected orientation. This eliminates the need for multiple specialized speaker types (front, side, height speakers) while maintaining immersive audio quality with height cues, directly resolving the contradiction between audio immersion and system complexity
Solution Approach 2:
The patent applies dynamics by implementing a system where the speaker's functional role is not fixed but changes dynamically based on its physical orientation. The orientation detection mechanism (sensor) and real-time feed assignment by the renderer allow the same speaker to dynamically switch between providing front, side, or height sound cues, enabling immersive audio without permanent physical installations or multiple speaker types
2Reliability
If ceiling or high wall speakers are installed to provide height sound components, then immersive audio performance is improved, but installation complexity and cost increase
Solution Approach 1:
The patent applies inversion by reversing the traditional approach to height sound projection. Instead of placing speakers physically above the listener (ceiling/high wall), the system uses floor-standing or wall-mounted speakers at normal listening height that project sound upward at angles. The upward-firing drivers reflect off the ceiling to create height cues, inverting the spatial arrangement while achieving the same immersive audio effect and dramatically simplifying installation
3Adaptability or versatility
If a single speaker type is used for all positions, then system flexibility and ease of placement are improved, but the ability to accurately render height cues may be compromised
Solution Approach 1:
The patent resolves this contradiction through dynamic feed assignment based on real-time orientation detection. The single speaker type includes sensors that detect its physical orientation, and the renderer dynamically assigns appropriate audio feeds (front, side, or height cues) based on this detected orientation. This dynamic adaptation ensures that height cues are accurately rendered when the speaker is in the correct orientation while maintaining system flexibility and ease of placement
Solution Approach 2:
The patent applies feedback by implementing a closed-loop system where the speaker's physical orientation is continuously detected and this information feeds back to the renderer. The renderer uses this feedback to dynamically adjust which audio feed is assigned to which speaker, ensuring that height cues are only projected when speakers are in orientations suitable for upward-firing drivers, thus maintaining rendering accuracy while using a single flexible speaker type
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
Enables flexible speaker arrangement and immersive audio playback with reduced complexity and cost by using a single type of speaker that can adapt its orientation and audio feed configuration, effectively projecting both direct and height sound components.
Implementation Method 1
upward-firing drivers to reflect sound off of an upper surface (e.g., ceiling) of a listening environment
Implementation Method 2
a sensor sensing an orientation of the cabinet, a wireless transmitter sending orientation information of the cabinet to an external renderer
Data Source
AI summary
Systems and methods are described for an adaptive audio system that renders reflected sound for adaptive audio systems in different ways depending on the orientation of at least one speaker in a set of speakers. A speaker of the system may comprise an integrated speaker having front-firing and upward-firing drivers, a sensor to determine the orientation of the speaker (e.g., horizontal or vertical) and a transceiver and control unit that transmits the orientation to a decoder and receives updated speaker feeds from the renderer based on the orientation.