Acoustic Parameter Adjustment for Enclosed Computing Devices

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Solution Overview

Problem

When mobile computing devices are secured to enclosures, their acoustic characteristics deteriorate due to changes in acoustic parameters, leading to issues like increased feedback and echo, which existing technologies fail to effectively address.

Innovation Solution

The method involves using an identifier associated with the enclosure to determine its physical parameters, allowing the computing device to adjust its acoustic parameters to maintain desired characteristics, including echo cancellation and noise reduction, by comparing generated and received audio signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If acoustic parameters are tuned for the computing device out of an enclosure, then the acoustic characteristics are optimized for portable use, but the acoustic characteristics deteriorate when the device is secured to an enclosure

Engineering Contradiction:

Improveacoustic characteristicsVSAvoidacoustic parameter adaptation

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic adjustment of acoustic parameters based on the device's operational context. The system automatically detects whether the device is in an enclosure or portable mode and adjusts acoustic parameters (such as echo cancellation, noise suppression, and equalization) in real-time to maintain optimal acoustic characteristics for each scenario.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes acoustic parameters (frequency response, gain, echo cancellation coefficients) based on the detected operational mode. When an enclosure is detected, the system applies a different set of acoustic parameters optimized for enclosed environments, thereby resolving the contradiction between portable and enclosed acoustic optimization.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If the computing device maintains acoustic parameters tuned for out-of-enclosure use while secured to an enclosure, then the device complexity remains low, but feedback and echo increase

Engineering Contradiction:

Improveacoustic parameter adjustment systemVSAvoidfeedback and echo

Core Design Contradiction:

Device complexityVSObject-generated harmful factors

Solution Approach 1:

The patent employs feedback mechanisms where the device continuously monitors acoustic characteristics (such as echo levels and feedback signals) and automatically adjusts acoustic parameters in response. This closed-loop system detects harmful acoustic effects and applies corrective parameter adjustments to eliminate feedback and echo while maintaining relatively simple device architecture.

Inventive Principle:

Principle #23Feedback

3Reliability

If acoustic parameters are adjusted based on enclosure physical parameters, then acoustic characteristics are preserved in enclosures, but the device complexity increases due to identifier processing and parameter determination

Engineering Contradiction:

Improveacoustic characteristics preservationVSAvoididentifier and parameter processing system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent performs preliminary actions by pre-storing acoustic parameter profiles for different enclosure types. Instead of complex real-time analysis, the system uses simplified identifier detection to look up and apply pre-determined acoustic parameters, thereby preserving acoustic characteristics while minimizing the processing complexity required at runtime.

Inventive Principle:

Principle #10Preliminary action

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 approach enhances the performance of audio processing features for voice communications by minimizing unwanted noise and echoes, ensuring that acoustic characteristics remain preserved even when the device is secured to an enclosure.

Implementation Method 1

In operation, the speaker 224 may generate audio signals that are received back by the microphone 228

Methodology Applied

Scientific EffectElectroacoustic transduction:

Implementation Method 2

The computing device can be tuned to account for feedback that occurs when the computing device is secured to an enclosure... comparing generated and received audio

Methodology Applied

Scientific EffectAcoustic signal detection and comparison:

Data Source

PatentUS10127920B2Acoustic parameter adjustment

Publication Date: 2018.11.13 GOOGLE LLC

AI summary

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for adjusting acoustic parameters. In one aspect, a method includes receiving an identifier associated with an enclosure for a computing device, transmitting data identifying the identifier associated with the enclosure for the computing device, and receiving one or more physical parameters of the enclosure for the computing device. The method also includes based on the one or more physical parameters of the enclosure for the computing device, determining, one or more acoustic parameter adjustments of the computing device in the enclosure, the one or more acoustic parameter adjustments being configured to preserve one or more acoustic characteristics of the computing device out of the enclosure while the computing device is in the enclosure, and based on the one or more acoustic parameter adjustments, adjusting the one or more acoustic parameters of the computing device.