Volume Adjustment Control for Preventing Excessive Sound Jumps
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Solution Overview
Problem
Existing sound volume adjustment systems often result in unintended high sound levels due to excessive volume changes, either by setting an upper limit that restricts desired volume levels or failing to accurately follow user adjustments, leading to a sense of strangeness in volume changes.
Innovation Solution
A sound volume adjuster system that includes a storage for initial volume settings, a receiver for change requests, a determiner to assess if the change exceeds an allowable maximum change amount, and an adjuster to limit changes to this amount, preventing unintended high volume levels and ensuring volume changes align with user intent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an upper limit of volume setting value is set, then unintended high sound volume is prevented, but desired high volume level cannot be adjusted
Solution Approach 1:
The patent applies dynamics by making the volume adjustment behavior adaptive based on operation speed. When the slider is moved quickly (exceeding threshold), the system dynamically limits the volume change to prevent unintended high volume. When moved slowly (within threshold), the system allows full volume adjustment range. This dynamic response resolves the contradiction by adapting the volume control behavior to the user's operation characteristics.
2Reliability
If the sound volume is slowly changed, then unintended high sound volume is prevented, but the volume change cannot follow user's operation, causing sense of strangeness
Solution Approach 1:
The system dynamically adjusts the volume change rate based on the slider movement speed. When the user moves the slider quickly, the volume changes rapidly to match the operation. When moved slowly, the volume changes gradually. This dynamic adaptation ensures the volume change always follows the user's operation intent, eliminating the sense of strangeness while still preventing unintended high volume through speed-based threshold detection.
Solution Approach 2:
The patent changes the parameter of volume adjustment rate based on the operation speed threshold. By monitoring the change amount of slider position and comparing it to a threshold, the system adjusts the volume setting value at different rates. This parameter change approach allows the system to maintain followability for normal operations while limiting volume changes that would cause unintended high sound levels.
3Ease of operation
If volume setting value changes rapidly, then user's operation is followed accurately, but unintended high sound volume level occurs
Solution Approach 1:
The patent applies preliminary anti-action by detecting rapid slider movement (change amount exceeding threshold) before the volume reaches an unintended high level. When such rapid operation is detected, the system preemptively limits the volume change amount, counteracting the potential harmful effect of unintended high sound volume before it occurs. This allows accurate following of user intent while preventing harmful outcomes.
Data Source
AI summary
A sound volume adjuster includes: a storage which stores a first value of a volume setting value and an allowable maximum change amount; a receiver which receives a change request indicating a second value of the volume setting value; a determiner which, when a change amount of the volume setting value between the first value and the second value exceeds the allowable maximum change amount, determines that the change request is an excessive request; and an adjuster which, when the determiner determines that the change request is the excessive request: changes the first value stored in the storage by a change amount which is equal to or smaller than the allowable maximum change amount to set a third value of the volume setting value; and adjusts a sound volume by the third value.