Graphic Phase Shifter for Digital Audio Editing

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Solution Overview

Problem

Current digital audio editing methods lack precision in adjusting audio features like phase differences and pan positions across frequency bands, leading to inaccuracies and unwanted noise or signal cancellation, especially in multi-channel audio systems.

Innovation Solution

A computer-implemented method that analyzes digital audio data by selecting portions, calculating feature values for frequency bands, and applying these values to adjust phase differences or pan positions, allowing for graphical representation and manual editing to create edited audio data with improved stability and spatial effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual editing methods are used to adjust audio features, then ease of operation is improved, but manufacturing precision (adjustment accuracy) deteriorates

Engineering Contradiction:

Improveease of operationVSAvoidadjustment accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The system automatically analyzes audio data and generates adjustment recommendations without requiring manual measurement. The audio editing system self-determines phase differences and pan positions across frequency bands, eliminating the need for manual operation while maintaining high precision through automated computational analysis.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical adjustment methods with automated computational analysis. Instead of manual measurement and adjustment, the system uses digital signal processing to automatically calculate phase differences and generate precise adjustment curves, substituting human operation with electronic computation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If automated adjustment methods are used, then manufacturing precision is improved, but ease of operation deteriorates

Engineering Contradiction:

Improveadjustment accuracyVSAvoidease of operation

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The system provides visual feedback through graphical representations of phase differences and pan positions across frequency bands. Users can view the analyzed audio data and adjustment recommendations displayed as curves, allowing them to understand and verify the automated analysis before applying changes, thus maintaining ease of operation while achieving high precision.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent segments the audio analysis by frequency bands, displaying and allowing adjustment of each frequency range independently. This segmentation enables users to easily identify and adjust specific problematic frequency ranges while maintaining overall audio quality, making the automated process user-friendly and controllable.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If phase adjustment is applied without frequency band analysis, then ease of operation is improved, but manufacturing precision deteriorates

Engineering Contradiction:

Improveease of operationVSAvoidphase adjustment precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The system divides the audio spectrum into multiple frequency bands and analyzes phase differences within each band separately. This segmentation allows for precise phase adjustment tailored to each frequency range, preventing unwanted interactions between frequency bands while maintaining ease of operation through automated analysis of each segment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different adjustment characteristics to different frequency bands based on their specific phase difference characteristics. Each frequency band receives localized adjustment treatment appropriate to its properties, with the system automatically determining the optimal adjustment parameters for each local region rather than applying a uniform approach.

Inventive Principle:

Principle #3Local quality

4Ease of operation

If pan position adjustment is applied without frequency band analysis, then ease of operation is improved, but manufacturing precision deteriorates

Engineering Contradiction:

Improveease of operationVSAvoidpan position adjustment precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The system segments the audio data by frequency bands and calculates pan positions independently for each band. This allows precise control over the spatial positioning of different frequency components, enabling accurate stereo field manipulation while maintaining ease of operation through automated analysis and graphical display of pan position curves.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8532802B1Graphic phase shifter

Publication Date: 2013.09.10 ADOBE INC

AI summary

Systems and methods for editing digital audio data are provided. In one implementation, a method is provided that includes receiving digital audio data. The computer implemented method includes receiving digital audio data and displaying a representation of the digital audio data. The method also includes receiving a selection including a portion of the digital audio data, analyzing a feature of the audio data for the selected portion with respect to a plurality of frequency bands in the digital audio data, calculating a feature value for each frequency band over a specified period of time, and using the feature value for each frequency band to adjust the feature of the audio data.