Hard Disk Drive Noise Reduction via Audio Synchronization
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Solution Overview
Problem
Current multimedia storage devices, such as digital video recorders, generate noise due to the rapid acceleration and deceleration of hard disk drives, which can disrupt the user's experience of audio and video content, and existing noise reduction techniques may compromise data throughput performance.
Innovation Solution
A system and method that utilize a processing unit to receive a content stream with volume and timing data, instructing the hard disk drive to adjust its read/write operations based on audio volume levels, moving at higher rates during high volume periods and lower rates during low volume or silent periods to minimize perceived noise while maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the hard disk drive operates at high speed with rapid acceleration and deceleration to maintain data throughput, then productivity is improved, but noise generated by the storage device increases
Solution Approach 1:
The system dynamically adjusts the hard disk drive's acceleration and deceleration rates based on real-time audio volume levels. During high-volume audio segments, the drive operates at higher speeds to maintain data throughput, while during low-volume or silent periods, it reduces speed to minimize noise. This dynamic adaptation resolves the contradiction by making the drive speed flexible rather than fixed, allowing simultaneous optimization of both productivity and noise reduction.
Solution Approach 2:
The invention changes the operational parameters of the hard disk drive (specifically acceleration and deceleration rates) based on external conditions (audio volume levels). By monitoring audio volume data and timing data, the system adjusts the drive's movement parameters in real-time, transitioning between high-speed and low-speed operational states. This parameter change strategy enables the drive to maintain high productivity when necessary while reducing noise when audio volume provides masking effect.
2Object-generated harmful factors
If the hard disk drive reduces acceleration and deceleration rates to minimize noise, then noise is reduced, but data throughput performance deteriorates
Solution Approach 1:
The system implements periodic action by alternating between high-speed and low-speed operational modes based on the periodic structure of audio content. During periods of high audio volume, the drive performs read/write operations at high speed, while during silent or low-volume periods, it operates at reduced speed. This periodic modulation of drive speed aligns with the temporal structure of audio content, ensuring that productivity is maintained during appropriate windows while noise is reduced during others.
Solution Approach 2:
The hard disk drive effectively serves itself by using the audio content being played as a resource to control its own operational characteristics. The audio volume data and timing data act as a feedback signal that the drive uses to autonomously adjust its acceleration and deceleration rates. This self-service mechanism eliminates the need for external intervention or complex additional hardware, allowing the drive to automatically optimize its performance and noise characteristics based on the current audio state.
3Object-generated harmful factors
If noise reduction techniques are applied to the hard disk drive, then the user's perception of noise is reduced, but system complexity increases
Solution Approach 1:
The processing unit performs multiple functions: it decodes audio data, analyzes volume levels, processes timing data, and generates control signals for the hard disk drive. By making the processing unit multi-functional, the system avoids adding dedicated noise reduction hardware, thereby minimizing the increase in system complexity while achieving effective noise reduction through software-based control.
Data Source
AI summary
A system for reducing a user's ability to perceive noise generated by a storage device. The system includes a processing unit and a storage device communicably coupled to the processing unit. The storage device may be, for example, a hard disk drive. The processing unit is provided with computer implemented instructions to: (i) receive a content stream comprising an audio component and a video component, wherein the content stream further comprises volume data and timing data relating to the audio component; and (ii) instruct the storage device to carry out read/write operations of the hard disk drive based, at least in part, on the volume data and the timing data.