Acoustic Volume Mapping for Multi-Speaker Balance Control
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Solution Overview
Problem
When multiple acoustic apparatuses with different output characteristics are controlled simultaneously using a remote controller, volume balance issues arise due to sudden changes in sound volume, causing discomfort to listeners.
Innovation Solution
An acoustic processing apparatus with a connecting unit for wireless communication, a situation obtaining unit, a receiving unit, a storage unit, a determining unit, and a changing unit that compares and adjusts parameter settings to maintain volume balance across connected devices, preventing sudden changes in set values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple acoustic apparatuses are controlled simultaneously by a remote controller, then the volume value can be set uniformly across all apparatuses, but sudden volume changes occur causing unpleasant sensation and discomfort
Solution Approach 1:
The system performs preliminary actions by detecting when a new acoustic apparatus is added to the network and proactively adjusting its volume parameter before the remote controller issues a volume change command. This preliminary adjustment ensures the new apparatus starts with an appropriate volume level, preventing sudden volume changes when users first interact with it through the remote controller.
Solution Approach 2:
The system implements feedback by continuously monitoring the connection status of acoustic apparatuses and their volume parameters. When a new apparatus is detected, the system receives feedback about its current state and automatically adjusts its volume setting. This closed-loop feedback mechanism ensures that volume changes are smooth and controlled, preventing unpleasant sudden changes while maintaining uniform control across all apparatuses.
2Measurement precision
If the volume parameter is directly changed to match the remote controller instruction, then the remote control function works accurately, but the set value changes suddenly causing discomfort
Solution Approach 1:
Instead of directly applying the remote controller's volume instruction when a new apparatus is detected, the system performs a preliminary adjustment by setting the volume to an intermediate or default value first. This preliminary action prevents the sudden jump to the full instructed volume, while still maintaining the ability to achieve the target volume setting through controlled steps.
Solution Approach 2:
The system applies beforehand cushioning by introducing a buffer mechanism in the volume parameter change process. When a new acoustic apparatus is detected, the volume parameter is adjusted with cushioning that prevents sudden changes - either by using intermediate values, gradual steps, or temporary clamping of the parameter change rate. This cushioning effect protects users from unpleasant sudden volume changes while preserving accurate remote control functionality.
3Ease of operation
If all acoustic apparatuses use the same volume instruction value, then remote control operation is simplified, but volume balance is disrupted due to different output characteristics of each apparatus
Solution Approach 1:
The system applies local quality by allowing each acoustic apparatus to have its own optimized volume parameter setting while still being controllable through a single remote controller. When a new apparatus is detected, the system adjusts its specific volume parameter based on its individual output characteristics, rather than forcing a uniform value on all devices. This enables simplified remote operation while maintaining proper volume balance across devices with different characteristics.
Data Source
AI summary
An acoustic processing apparatus includes: a connecting unit to which an instructing device is connected; a situation obtaining unit obtaining information indicative of whether a number of apparatuses connected to the instructing device is a plural number or not, from the instructing device; a receiving unit receiving an instruction value from the instructing device; a storage unit in which a set value is stored; a determining unit, in a case where the information indicates that the number of apparatuses connected to the instructing device is a plural number, comparing the instruction and set values, and determines correspondence relationship between the values in accordance with a result of comparison; a changing unit, when the receiving unit receives a instruction value after the correspondence relationship is determined, specifying a set value which corresponds to the instruction value, based on the correspondence relationship, and changes the set value stored in the storage unit to the specified set value; and an acoustic processing unit which applies an acoustic process on an input audio data in accordance with the set value.