Rotating Speaker Array for Dynamic Sound Alignment

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Solution Overview

Problem

Existing audio play systems using speaker arrays struggle to consistently increase volume effectively due to uncertainty in listener position, leading to reduced audio quality and increased costs without corresponding improvement in sound experience.

Innovation Solution

An audio play optimization method that involves acquiring position information from a microphone array, determining the sound source position, calculating the rotation angle for the speaker array to align with the sound superimposition area, and rotating the speaker array to ensure optimal sound delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If a speaker array is used to increase volume, then the volume should be increased, but the audio quality deteriorates due to uncertain listener position causing sound cancellation

Engineering Contradiction:

ImprovevolumeVSAvoidaudio quality

Core Design Contradiction:

PowerVSReliability

Solution Approach 1:

The speaker array dynamically adjusts its orientation by rotating to different angles based on real-time listener position detection. The system calculates optimal rotation angles and executes rotations to align the speaker array with the listener's position, ensuring consistent sound delivery quality regardless of initial positional uncertainty.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system incorporates feedback from the microphone array that detects listener position and audio characteristics. This feedback is continuously processed to determine optimal speaker array orientation, creating a closed-loop control system that adapts to changing listener positions and maintains high audio quality.

Inventive Principle:

Principle #23Feedback

2Device complexity

If the speaker array is fixed in position, then the device complexity is reduced, but the adaptability to different listener positions deteriorates

Engineering Contradiction:

Improvespeaker array configurationVSAvoidlistener position adaptation

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The speaker array transitions from a fixed configuration to a dynamic, adjustable configuration. The system calculates optimal rotation angles based on listener position and physically rotates the speaker array to align with the listener, enabling adaptability to different positions without requiring multiple fixed speaker arrays.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

A single speaker array unit performs multiple functions by rotating to different orientations. Instead of requiring separate fixed speaker arrays for different listener positions, the system uses one versatile speaker array that can adapt its orientation to serve various listener locations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If the speaker array rotates to align with the sound superimposition area, then the audio quality improves, but the device complexity increases due to rotation control mechanisms

Engineering Contradiction:

Improveaudio qualityVSAvoidrotation control system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system replaces complex mechanical rotation control mechanisms with electronic control. Instead of using complex mechanical linkages or multiple fixed speaker arrays, the system uses electronic calculation of rotation angles and electronic control of the speaker array orientation, simplifying the overall system while achieving the same audio quality improvement.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 method ensures that the sound is directed into the sound superimposition area, thereby consistently improving the volume and audio quality of the speaker array, overcoming the limitations of uncertain listener positions and reducing the risk of sound cancellation.

Implementation Method 1

calculating to obtain delay information between the first audio signal and the second audio signal

Methodology Applied

Scientific EffectTime difference of arrival:

Implementation Method 2

calculating to obtain a first signal energy of the first audio signal, a second signal energy of the second audio signal

Methodology Applied

Scientific EffectSignal energy detection:

Implementation Method 3

determining a sound superimposition area of the speaker array; calculating a rotation angle of the speaker array according to an offset angle between the sound source position and the sound superimposition area

Methodology Applied

Scientific EffectSound wave superposition: Interference

Data Source

PatentUS20250048026A1Audio play optimization method, device and readable storage medium

Publication Date: 2025.02.06 GEER TECH CO LTD

AI summary

The present disclosure provides an audio play optimization method, an electronic device and a readable storage medium. The audio play optimization method comprises: acquiring first position information of a microphone array and an audio signal obtained by means of the microphone array, and determining a sound source position according to the first position information and the audio signal; determining a sound superimposition area of the speaker array; calculating a rotation angle of the speaker array according to an offset angle between the sound source position and the sound superimposition area; rotating the speaker array by the rotation angle, and playing a to-be-played preset audio to the audio source by means of the speaker array after rotating.