3D Sound Orientation Adaptability via Dynamic Filter Selection

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Solution Overview

Problem

Conventional portable electronic devices with integrated microphones struggle to maintain consistent 3D audio quality due to variations in microphone locations and orientations, leading to poor audio performance and misalignment of the sound scene during playback.

Innovation Solution

An apparatus and method that utilize orientation data to select and apply specific filters for signal processing of 3D sound data, ensuring enhanced audio quality by compensating for changes in device orientation during both capture and playback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple microphones are integrated at various locations and orientations in a portable device, then 3D audio capture capability is enabled, but audio quality varies across different portions of the sound field

Engineering Contradiction:

Improve3D audio capture capabilityVSAvoidaudio quality consistency

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting filter selection based on device orientation parameters. The system receives orientation data and selects different filters from a set of filters corresponding to different orientations, thereby adapting the audio processing parameters to maintain consistent audio quality across varying device orientations and microphone configurations

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by making the audio filter selection dynamic rather than static. The filter selection changes in real-time based on the device's orientation data, allowing the system to adapt to changing conditions during capture and playback, thereby maintaining audio quality consistency despite variations in microphone locations and orientations

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the device orientation changes during recording, then operational flexibility is improved, but the sound scene appears to rotate during playback

Engineering Contradiction:

Improvedevice orientation flexibilityVSAvoidsound scene orientation stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary anti-action by pre-defining a set of filters that correspond to different device orientations. When orientation data indicates a change in device orientation, the system selects the appropriate filter from this pre-configured set to counteract the orientation change effect, thereby preventing the sound scene from appearing to rotate during playback

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The patent implements feedback by continuously receiving orientation data and using this information to dynamically select appropriate filters. This closed-loop approach ensures that the sound scene orientation remains stable during playback by constantly adjusting the filter selection based on the current device orientation, counteracting any rotational effects

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250031000A13D sound orientation adaptability

Publication Date: 2025.01.23 QUALCOMM INC

AI summary

An apparatus includes one or more processors configured to receive orientation data and to select, based on the orientation data, a particular filter from among multiple filters. The one or more processors are configured to perform signal processing operations associated with three-dimensional (3D) sound data based on the particular filter.