Directional Speaker Audio Segmentation for Bass Quality
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Solution Overview
Problem
Highly directional speakers struggle to output sound in the bass range, leading to lower sound quality when used to simulate sounds coming from various directions compared to low directional speakers.
Innovation Solution
An information processing apparatus that acquires sound data including treble and bass audio, determines the volume of each based on distance from the reflection position and the user, and controls high and low directional speakers to output treble and bass audio accordingly, enhancing sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a highly directional speaker is used to output sound in a particular direction, then directional sound output is improved, but sound quality deteriorates due to inability to output bass range
Solution Approach 1:
The audio signal is segmented into treble and bass components, with the highly directional speaker handling only the treble audio. This allows the speaker to maintain its directional advantage while avoiding the bass frequency range it cannot reproduce effectively.
Solution Approach 2:
The system combines multiple speakers with different directional characteristics - a highly directional speaker for treble and a low directional speaker for bass - creating a multi-functional audio system that leverages the strengths of each speaker type.
2Adaptability or versatility
If a highly directional speaker is used to simulate sounds from various directions through reflection, then spatial audio effect is improved, but sound quality deteriorates compared to using only low directional speakers
Solution Approach 1:
The audio signal is separated into frequency bands, with treble audio directed to the highly directional speaker for spatial effects and bass audio directed to the low directional speaker for quality assurance.
Solution Approach 2:
Different frequency ranges are assigned to different speakers based on their directional characteristics - high frequencies to the highly directional speaker and low frequencies to the low directional speaker, optimizing the performance of each component.
3Reliability
If bass audio is assigned to a low directional speaker, then sound quality is improved, but directional recognition may be affected
Solution Approach 1:
The audio spectrum is segmented by frequency, assigning treble to the directional speaker for spatial localization and bass to the low directional speaker, leveraging the fact that high frequencies provide better directional cues.
Solution Approach 2:
The system changes the frequency parameter distribution across speakers, with the highly directional speaker handling high frequencies where directional perception is strongest and the low directional speaker handling low frequencies where directional perception is less critical.
Data Source
AI summary
To enhance the sound quality in the case where a directional speaker is used to allow a user to hear sounds coming from various directions. An information processing apparatus includes sound data acquisition means for acquiring data indicative of one piece of audio including treble audio and bass audio, volume determination means for determining a volume of the bass audio and a volume of the treble audio on the basis of a distance from a reflection position at which a sound from a high directional speaker is reflected to a user and a distance from a low directional speaker lower in directionality than the high directional speaker to the user, and speaker control means for making the low directional speaker output the bass audio and the high directional speaker output the treble audio on the basis of the determined volumes.