Sound Source System for Authentic Keybed Hitting Sound
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Solution Overview
Problem
Electronic keyboards struggle to accurately replicate the keybed hitting sound of acoustic pianos, leading to a sense of incompatibility during key operations due to distinct sound-producing mechanisms for string striking and keybed hitting sounds.
Innovation Solution
A sound source system that calculates and generates sound signals based on key position detection, using sensors to determine key behavior at specific positions, adjusting output levels and amplification factors to simulate the keybed hitting sound more accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate sound-producing mechanisms are used for string striking and keybed hitting sounds, then the acoustic piano experience is better replicated, but a sense of incompatibility occurs during key operations
Solution Approach 1:
The patent combines the string striking sound and keybed hitting sound into a single integrated sound production system. The keybed hitting sound is generated simultaneously with the string striking sound when a key is depressed, creating a unified auditory experience that eliminates the sense of incompatibility between separate sound mechanisms while maintaining authenticity.
Solution Approach 2:
The patent generates the keybed hitting sound in advance as part of the key depression process. By producing the keybed hitting sound simultaneously with the string striking sound at the moment of key depression, the system prepares the complete acoustic piano-like sound profile before the player completes the key stroke, ensuring seamless integration.
2Reliability
If keybed hitting sound is added to electronic piano, then authenticity is improved, but device complexity increases
Solution Approach 1:
The patent introduces a sound generator specifically dedicated to producing keybed hitting sounds. This intermediary component receives control signals when a key is depressed and generates the appropriate keybed hitting sound, separating the complexity of dual sound production into manageable, independent modules while maintaining overall system integration.
Solution Approach 2:
The sound generator is designed to perform multiple functions: it can produce both string striking sounds and keybed hitting sounds depending on the control signals received. This multi-functional approach allows a single device to handle different sound production requirements without proportionally increasing overall system complexity.
Data Source
AI summary
A sound source includes: a processor that implements instructions to execute a plurality of tasks, including: a first calculating task that calculates a first estimated value based on a detection result yielded by a detecting device that detects passage of a key through a first, a second, and a third positions, the first estimated value pertaining to behavior of the key at a predetermined position; a second calculating task that calculates a second estimated value based on the result, the second estimated value pertaining to behavior of the key at a fourth position; a signal generating task that generates a first and a second sound signals; a first adjusting task that adjusts an output level of the first sound signal based on the first estimated value; and a second adjusting task that adjusts an output level of the second sound signal based on the second estimated value.