Sound Adjustment Device for Binaural Background Mixing

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing headphones do not effectively enhance the listening experience by inducing specific brainwave states through binaural beats, and the frequency adjustment of background audio signals is not integrated with external audio signals to maintain high-quality stereo listening.

Innovation Solution

A sound adjustment device with a background sound source, frequency adjuster, mixer, and output port that generates and adjusts mono background audio signals into frequency-differentiated left and right ear signals, mixing them with external audio signals to induce desired brainwave states while maintaining stereo quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If frequency adjustment is applied to background audio signals to induce binaural beats, then brainwave induction effect is improved, but stereo listening quality deteriorates

Engineering Contradiction:

Improvebrainwave induction effectVSAvoidstereo listening quality

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The audio signal is segmented into background audio signals and external audio signals, with frequency adjustment applied only to the background signals. This segmentation allows binaural beats to be induced in the background layer without affecting the fidelity of the external audio layer, resolving the contradiction between brainwave induction and stereo quality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Frequency adjustment is applied locally only to specific background audio signals rather than uniformly to all audio content. The external audio signals maintain their original frequency characteristics for high-quality stereo listening, while background signals receive frequency modulation for brainwave induction, achieving both goals simultaneously.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If background audio signals are processed with frequency adjustment, then listening experience enhancement is improved, but device complexity increases

Engineering Contradiction:

Improvelistening experience enhancementVSAvoidsignal processing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A frequency adjuster module is introduced as an intermediary component between the background audio source and the output. This dedicated module handles frequency adjustment specifically for background signals, isolating the complexity from the main audio processing chain and enabling enhanced listening experience without proportionally increasing overall device complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP4633196A1Sound adjustment device

Publication Date: 2025.10.15 COTRON CORPORATION

Figure 1

AI summary

A sound adjustment device (100) including a background sound source (110), an external sound source receiver (120), a frequency adjuster (130), a mixer (140), and an output port (150). A background audio signal (B10) provided by the background sound source (110) is a mono audio signal. The external sound source receiver (120) is used to receive an external audio signal (E10). The frequency adjuster (130) is used to receive and adjust the background audio signal (B10) into a left ear background audio signal (B12) and a right ear background audio signal (B14). A first frequency of the left ear background audio signal (B12) and a second frequency of the right ear background audio signal (B14) have a frequency difference. The mixer (140) is used to mix the external audio signal (E10) and the left ear background audio signal (B12) into a left ear audio signal (L10), and to mix the external audio signal (E10) and the right ear background audio signal (B14) into a right ear audio signal (R10).