Electronic Keyboard Instrument Sequential Switch Sound Control
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Solution Overview
Problem
Electronic keyboard instruments fail to individually control and reproduce noise sounds and main musical sounds effectively, resulting in inadequate representation of noise sounds generated in acoustic musical instruments.
Innovation Solution
An electronic keyboard instrument with a processor that sequentially activates first and second switches to produce noise and main musical sounds using distinct envelopes, allowing independent control over noise and main musical sound production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single switch is used to trigger sound production in electronic keyboard instruments, then the device complexity is reduced, but the ability to reproduce noise sounds and main musical sounds separately deteriorates
Solution Approach 1:
The single switch is segmented into multiple switches (first switch and second switch) that are turned on sequentially when a key is pressed. The first switch triggers noise sound production while the second switch triggers main musical sound production, enabling separate control of different sound components without excessive complexity
Solution Approach 2:
The first switch is designed to be turned on before the second switch during key pressing. This preliminary action allows noise sounds to be generated before the main musical sounds, accurately reproducing the natural attack characteristics of acoustic instruments where noise precedes the sustained tone
2Device complexity
If noise sounds and main musical sounds are not individually controlled, then the device complexity is reduced, but the fidelity of acoustic instrument reproduction deteriorates
Solution Approach 1:
The sound production system is segmented into separate noise sound production and main musical sound production pathways. Each pathway is controlled by dedicated switches and envelope settings, allowing independent control of noise and musical components to accurately reproduce acoustic instrument characteristics
Solution Approach 2:
Different envelope parameters are applied to noise sounds and main musical sounds. The noise sound envelope is configured with specific attack and decay characteristics that differ from the main musical sound envelope, enabling realistic reproduction of how acoustic instruments produce sound with initial noise followed by sustained tone
Data Source
AI summary
An electronic keyboard instrument includes: a keyboard including a plurality of keys; a plurality of switches that are provided for each key and include a first switch and a second switch that are sequentially turned on by pressing of the key; and a processor. The processor instructs that a noise sound corresponding to a selected musical instrument sound be produced in accordance with a prescribed first envelope upon detecting turning on of the first switch by pressing of the key, and instructs that a main musical sound corresponding to the selected musical instrument sound be produced after detecting turning on of the second switch.