Electronic Device Frequency Division Sound Effect Processing

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Solution Overview

Problem

Electronic devices face challenges in applying sound effects to super-high-quality sound sources without losing high-frequency band signals due to limited capabilities such as computational power and memory, leading to inevitable signal loss during down-sampling.

Innovation Solution

The electronic device employs frequency division and reconstruction to apply sound effects, preserving the high-frequency band signals by determining a designated frequency band and multiplexing sound source data, allowing for the separation and synthesis of high and low-frequency bands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If down-sampling is applied to sound source data to match the capabilities of the electronic device and sound effect, then processing time and computational load are reduced, but high-frequency band signals are lost

Engineering Contradiction:

Improveprocessing speedVSAvoidhigh-frequency band signal

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The sound source data is segmented into multiple frequency bands (e.g., first frequency band, second frequency band, third frequency band) through frequency division. Different down-sampling rates are applied to different frequency bands, with higher bands using lower down-sampling rates to preserve high-frequency signals while lower bands use higher down-sampling rates to reduce processing load.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different quality levels (down-sampling rates) are applied to different parts (frequency bands) of the sound source data based on their specific requirements. High-frequency bands maintain higher quality with lower down-sampling to preserve signal integrity, while low-frequency bands use higher down-sampling rates to reduce computational complexity.

Inventive Principle:

Principle #3Local quality

2Device complexity

If down-sampling is applied to sound source data to match the capabilities of the electronic device, then computational power and memory requirements are reduced, but signal loss occurs

Engineering Contradiction:

Improvecomputational capability requirementVSAvoidhigh-frequency band signal

Core Design Contradiction:

Device complexityVSLoss of information

Solution Approach 1:

The sound source data is segmented into multiple frequency bands through frequency division. Different down-sampling rates are applied to different frequency bands, with higher bands using lower down-sampling rates to preserve high-frequency signals while lower bands use higher down-sampling rates to reduce processing load.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The down-sampling rate parameter is changed based on the frequency band. Different down-sampling rates (e.g., first down-sampling rate for first frequency band, second down-sampling rate for second frequency band) are applied to different parts of the sound source data to optimize both signal quality and processing requirements.

Inventive Principle:

Principle #35Parameter changes

3Manufacturing precision

If sound effects are applied to super-high-quality sound sources, then audio quality is enhanced, but processing time and power consumption increase

Engineering Contradiction:

Improveaudio qualityVSAvoidprocessing time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #35Parameter changes

4Manufacturing precision

If sound effects are applied to super-high-quality sound sources, then audio quality is enhanced, but power consumption increases

Engineering Contradiction:

Improveaudio qualityVSAvoidpower consumption

Core Design Contradiction:

Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP3401872B1Electronic device for providing content and control method therefor

Publication Date: 2023.07.12 SAMSUNG ELECTRONICS CO LTD

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AI summary

Disclosed is a control method for an electronic device. An electronic device according to an embodiment comprises: at least one speaker; and a processor. The processor may be configured to: obtain sound source data; obtain first sound source data, corresponding to a first designated frequency band, from the sound source data by using a filter; generate second sound source data by applying sound effect to at least a portion of sound source data corresponding to a second designated frequency band among the sound source data; generate synthesized sound source data corresponding to the sound source data by synthesizing the first sound source data and the second sound source data; and output the synthesized sound source data through the at least one speaker. Other embodiments may also be possible.