Sound Processing Device Equalizer Configuration for Tone Reproduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sound processing technologies face challenges in accurately replicating the original sound field in different environments, as they require time-consuming user input for phase and frequency characteristics, or costly data mapping and sophisticated processing, leading to inadequate tone reproduction for multiple sound images.
Innovation Solution
A sound processing device with multiple equalizers, each tailored to specific sound localization directions, applies unique frequency characteristics to sound image signals, correcting amplitude and time differences between channels to replicate the original sound field's frequency characteristics in the listening environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a uniform equalizer process is applied to all sound signals, then the device complexity is reduced, but the tone reproduction accuracy deteriorates for sound images in different directions
Solution Approach 1:
The patent divides the sound signal processing into multiple independent equalizers (first equalizer, second equalizer, etc.), where each equalizer processes sound signals for specific sound image directions. This segmentation allows each equalizer to be optimized for its specific directional characteristics while maintaining overall system manageability.
Solution Approach 2:
The patent applies different frequency characteristics to different equalizers based on their respective sound image directions. Each equalizer has locally optimized frequency response characteristics tailored to its specific directional requirements, rather than using a uniform frequency characteristic across all equalizers.
2Manufacturing precision
If multiple equalizers with unique frequency characteristics are used for each sound image direction, then the tone reproduction accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent designs each equalizer to handle multiple functions: frequency characteristic adjustment, sound image positioning, and adaptation to different listening environments. This multi-functionality reduces the need for separate processing stages while achieving high tone reproduction accuracy.
Solution Approach 2:
The patent dynamically adjusts frequency characteristics of each equalizer based on the listening environment and sound image direction. By changing parameters (frequency response, gain, etc.) according to specific conditions, the system achieves high accuracy without requiring a fixed complex structure for all possible scenarios.
3Manufacturing precision
If manual direction tuning and equalizer adjustment are required, then the tone reproduction accuracy can be improved, but the ease of operation deteriorates
Solution Approach 1:
The patent enables the sound processing device to automatically adjust frequency characteristics based on detected listening environments and sound image positions. The system performs self-tuning without requiring manual user input, thereby maintaining high tone reproduction accuracy while significantly improving ease of operation.
Solution Approach 2:
The patent incorporates feedback mechanisms where the system detects actual sound reproduction conditions and automatically adjusts equalizer parameters to optimize tone reproduction. This closed-loop control eliminates the need for manual tuning while maintaining high accuracy through continuous adaptation.
Data Source
AI summary
A sound processing device includes an equalizer that tunes the frequency characteristic so that a frequency characteristic of the sound wave listened in a second environment replicates the frequency characteristic of a sound wave listened in a first environment. A plurality of the equalizers is provided corresponding to a plurality of sound image signals that has respective sound images to be localized in different directions. In addition, the equalizer performs a unique frequency characteristic changing process to the corresponding sound image signal. Each equalizer has a transfer function that cancels the unique change to the frequency characteristic caused in accordance with the sound localization direction of the sound image signal.