Reflective Speaker Acoustic Control for Sound-Image Alignment
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Solution Overview
Problem
Reflective speakers face issues with volume reduction and discomfort due to distance and material properties of the reflection position, as well as misalignment with image display positions, leading to unsatisfactory sound experience.
Innovation Solution
An information processing apparatus that includes an acoustic control unit to adjust the output sound based on the reflection position, using a map generation unit to create a space map with reflection characteristics, and an image control unit to synchronize sound and image positioning, allowing for variable output direction and volume control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the reflective speaker outputs sound toward a distant reflection position to achieve flexible virtual sound source positioning, then the position freedom is improved, but the sound volume becomes too small
Solution Approach 1:
The system performs preliminary scanning of the space to detect reflection characteristics before actual sound output. The map generation unit creates a space map in advance that stores reflection position information and reflection characteristics, allowing the acoustic control unit to select optimal reflection positions that ensure sufficient sound volume while maintaining position freedom.
Solution Approach 2:
The system uses feedback from the detected reflected sound to adjust the output sound control. The map generation unit detects reflected sound and uses this feedback information to build the space map, which then guides the acoustic control unit to select reflection positions and adjust output sound based on actual reflection characteristics, ensuring adequate volume.
2Adaptability or versatility
If the virtual sound source is positioned far from the display position to achieve flexible sound positioning, then the position freedom is improved, but a feeling of discomfort occurs due to misalignment with the image
Solution Approach 1:
The system applies local quality by making the virtual sound source position dependent on the specific location of the image display. The acoustic control unit determines the reflection position based on the display position of the image, ensuring that the sound and image are locally aligned. This creates a coordinated relationship where the sound position adapts to the specific image location rather than being freely positioned anywhere.
3Manufacturing precision
If the acoustic control unit adjusts output sound based on reflection position to improve sound quality, then the sound satisfaction is improved, but the device complexity increases due to map generation and space scanning
Solution Approach 1:
The system performs self-service by automatically scanning the space and generating the space map without requiring external calibration or manual setup. The map generation unit autonomously detects reflection characteristics and builds the space map, which then enables the acoustic control unit to automatically adjust output sound based on the stored reflection position information, improving sound quality without proportionally increasing operational complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves user satisfaction by optimizing sound output and alignment with visual elements, preventing discomfort and enhancing the sense of realism.
Implementation Method 1
the reflective speaker outputs the output sound of an ultrasonic wave
Implementation Method 2
causing an output sound from a speaker to hit against and be reflected at a wall or the like
Data Source
AI summary
The present technology relates to an information processing apparatus, an information processing method, and a program that can improve satisfaction with a sound of a reflective speaker. An audio visual (AV) system includes an acoustic control unit that controls an output of an output sound from a reflective speaker on the basis of a reflection position of the output sound. The present technology can be applied to, for example, an AV system using a drive-type projector and a drive-type speaker. Further, the present technology can be applied to, for example, an AV system using a drive-type projector including a reflective speaker.