Audio Reproduction Device Occupancy-Based Room Correction
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Solution Overview
Problem
Conventional audio reproduction devices struggle to provide consistent sound quality in enclosed spaces due to variations in frequency responses caused by listener distance and environmental factors like sound absorption and reflection.
Innovation Solution
An audio reproduction device that detects occupancy using sensors and retrieves pre-calibrated room correction presets to dynamically adjust audio output, ensuring optimal sound quality based on the number of people present in the space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio reproduction device plays audio content in enclosed space, then audio content is reproduced, but frequency response varies due to listener distance and environmental factors
Solution Approach 1:
The patent applies dynamics by making the audio reproduction system adaptive to changing conditions. The system dynamically adjusts equalization parameters based on detected occupancy levels (1-person, 2-person, or group presets), transforming a static audio system into one that automatically adapts to different listening scenarios and environmental conditions.
Solution Approach 2:
The patent implements parameter changes by modifying equalization parameters (frequency, gain, Q-factor) based on occupancy detection. Different presets with specific parameter values are applied depending on the number of people detected in the room, thereby compensating for variations in sound absorption and reflection caused by different occupancy levels.
2Reliability
If room correction is applied to compensate for environmental factors, then sound quality improves, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing multiple equalization presets for different occupancy scenarios before actual use. Instead of performing complex real-time calculations, the system has prepared correction parameters in advance for 1-person, 2-person, and group situations, reducing the computational burden during operation.
Solution Approach 2:
The patent implements feedback by using occupancy detection (via sensors or manual input) to automatically select and apply the appropriate equalization preset. This closed-loop approach ensures the system continuously adapts to the current room conditions without requiring complex real-time acoustic analysis.
Data Source
AI summary
An audio reproduction device and method for room correction based on occupancy determination is provided. The audio reproduction device includes a speaker which reproduces audio, and includes a memory which stores a plurality of room-correction (RC) presets. The audio reproduction of the speaker is controlled within an enclosed physical space based on each of the plurality of RC presets. The audio reproduction device receives an occupancy signal from at least one sensor communicatively coupled with the audio reproduction device. The audio reproduction device further determines a number of people of a set of people, present in the enclosed physical space, based on the received occupancy signal. The audio reproduction device retrieves first room-correction (RC) preset from the stored plurality of RC presets based on the determined number of people. The audio reproduction device further controls the audio reproduction of the speaker based on the retrieved first RC preset.