Audio Device Frequency Band Cutting for Storage Optimization
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Solution Overview
Problem
Audio devices do not account for individual differences in audible frequency bands, leading to inefficient use of storage capacity and communication bandwidth when storing or transmitting audio data.
Innovation Solution
An audio device that compresses audio data by cutting frequency bands outside an individual's audible range, storing or transmitting only the necessary frequency bands based on user profile information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If audio data is stored or transmitted without cutting frequency bands, then sound quality is maintained, but storage capacity and communication bandwidth are wasted on inaudible frequency bands
Solution Approach 1:
The patent extracts and removes frequency bands that are outside the user's audible range from the audio data before storage or transmission. By identifying the specific audible frequency range for each user and eliminating frequencies below and above this range, the system reduces data volume while preserving all perceptible audio information, thus resolving the contradiction between storage efficiency and information retention.
Solution Approach 2:
The patent applies different frequency band cutting strategies to different users based on their individual audible frequency characteristics. Each user's audio data is processed according to their specific hearing range, with higher frequencies cut for elderly users and lower frequencies cut for young users. This localized customization optimizes storage and bandwidth usage for each user while maintaining sound quality within their perceptible range.
2Productivity
If frequency band cutting is applied to compress audio data, then storage capacity and communication bandwidth are optimized, but processing complexity increases
Solution Approach 1:
The patent performs frequency band cutting as a preliminary step during the audio data storage or transmission process, rather than adding complex real-time processing during playback. By pre-processing the audio data to remove inaudible frequency bands before storage, the system achieves compression and optimization without requiring complex processing during the more critical playback phase, thus balancing productivity improvement with acceptable processing complexity.
3Quantity of substance
If uniform frequency band handling is applied to all users, then device complexity is reduced, but storage capacity and communication bandwidth are underutilized
Solution Approach 1:
The patent implements user-specific frequency band handling by determining each user's audible frequency range and applying customized cutting parameters. The system identifies whether users are young (with poor low-frequency hearing) or elderly (with poor high-frequency hearing) and selectively removes only the inaudible portions for each user. This localized approach maximizes storage and bandwidth utilization while maintaining manageable complexity through automated user classification and standardized processing rules for each category.
Data Source
AI summary
[Problem] To provide an audio device with which it is possible to efficiently utilize the storage capacity of a storage device for storing audio data. [Solution] In this audio device 1, in accordance with user profile information stored in a profile information storage unit 102, audio data inputted to an audio data input unit 103 is subjected by a filter unit 104 to a process of cutting a frequency band higher than the highest frequency audible to the user) and/or a frequency band lower than the lowest frequency audible to the user, and the data is then encoded by a codec unit 105, and stored to an audio storage device 100. Audio data can thereby be stored in the audio storage device 100 in compressed form with no noticeable decline in sound quality to the user, making it possible to store more audio data, such as music, in the audio storage device 100.