Speaker Device with Delay Section for Sound Synchronization
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Solution Overview
Problem
Existing speaker devices do not effectively adjust the timing of sound arrivals from speaker units installed on different surfaces, such as the back, front, and upper surfaces, requiring separate measurements and additional equipment for corner and wall installations.
Innovation Solution
A speaker device with a housing having openings on the back, upper, and front surfaces, including a first speaker unit on the back, a second speaker unit on the upper or front, and a delay section, along with a remote controller for inputting installation modes and back surface distances to calculate and set the delay time for synchronized sound arrival.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If speaker units are installed on back surface and front/upper surfaces, then the speaker device can provide novel design and multi-directional sound emission, but the control of timing for sound arrival from different surfaces becomes complex and was not previously addressed
Solution Approach 1:
The speaker device is segmented into multiple speaker units positioned on different surfaces (back surface, front surface, upper surface). Each speaker unit is independently controllable with individual delay time settings, allowing separate timing adjustment for sound emission from each surface segment. This segmentation enables the system to handle the timing control complexity by treating each surface as an independent unit that can be adjusted separately.
Solution Approach 2:
The delay times for each speaker unit are made dynamically adjustable based on installation mode. The system provides multiple installation modes (corner installation, wall installation, free installation) with different delay time configurations. The delay times can be changed according to the selected installation mode and distance parameters, making the timing control adaptive rather than fixed, thus managing complexity through dynamic reconfiguration.
2Measurement precision
If delay times are adjusted through separate measurement using microphones and measurement circuits, then accurate sound synchronization can be achieved, but the device complexity and cost increase due to additional equipment
Solution Approach 1:
The speaker device performs self-adjustment of delay times based on installation mode selection and distance input. Instead of requiring external microphones and measurement circuits, the system uses its own processing capabilities to calculate and apply appropriate delay times. The controller automatically adjusts the delay parameters when the installation mode is changed or distance is modified, enabling the device to serve itself without additional measurement equipment.
Solution Approach 2:
The system adjusts delay time parameters based on changes in installation mode and distance parameters. When the user selects a different installation mode or inputs a different distance value, the delay time parameters are automatically recalculated and modified accordingly. This parameter-based approach allows accurate sound synchronization without physical measurement equipment, as the delay parameters are adjusted based on the configured installation conditions.
3Ease of operation
If multiple installation modes are provided with adjustable delay times, then the ease of operation and adaptability improve, but the device complexity increases due to additional control functions
Solution Approach 1:
The speaker device incorporates multiple installation modes (corner installation, wall installation, free installation) within a single universal control system. The same speaker units and delay section serve multiple functions by being reconfigured according to the selected installation mode. This multi-functionality allows the device to adapt to different installation scenarios without requiring separate control systems for each mode, managing complexity through a unified multi-purpose architecture.
Solution Approach 2:
The system provides pre-configured delay time settings for each installation mode. When a user selects an installation mode, the appropriate delay time parameters are automatically applied without requiring manual adjustment. The delay times are prepared in advance for each mode scenario, and the system simply activates the pre-calculated parameters when the mode is selected, making operation easy while managing complexity through pre-prepared configurations.
Data Source
Figure 1(A)~1(C)
Figure 2
Figure 3(A)~3(B)
AI summary
The present invention addresses the problem of providing an audio reproduction system capable of adjusting the timings of arrival of a sound emitted from a back surface and a sound emitted from a front surface at a user. An audio reproduction system comprises a speaker device (1) and a remote control device. The speaker device (1) is provided with a first speaker unit (210) provided in the back surface of a housing (11), a second speaker unit (211 C) provided in the upper surface or the front surface of the housing (11), and a delay unit (231 C) which delays a sound emitted from the second speaker unit (211C). The remote control device accepts inputs of an installation mode of the speaker device (1) and a back surface distance to a wall (80), calculates the delay time of the delay unit (211 C) on the basis of the inputted installation mode and back surface distance , and transmits the delay time to the speaker device (1). The speaker device (1) sets the delay time received from the remote control device in the delay unit (211C).