Accompaniment Control Circuit Volume Synchronization
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Solution Overview
Problem
Conventional electronic musical instruments with accompaniment functions struggle to naturally synchronize and control the sound emission states of accompaniment sounds with melody sounds, often resulting in an unnatural or incongruous musical experience due to similar sound pitches and volumes.
Innovation Solution
An accompaniment control device and method that detects the input state of melody sounds for each sound range and adjusts the sound emission state of accompaniment sounds accordingly, using a control circuit to synchronize and control the emission of both melody and accompaniment sounds across different sound ranges, ensuring the accompaniment sounds are appropriately volume-adjusted relative to the melody sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the sound volume of accompaniment sounds is increased to provide rich accompaniment, then the accompaniment function becomes more prominent, but the melody sounds become less distinguishable and the overall musical naturalness deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the sound emission control for different sound ranges. The control circuit divides sounds into melody sound range and accompaniment sound range, and applies different volume control strategies to each range based on the detected melody sound input state, rather than applying uniform volume control to all sounds.
Solution Approach 2:
The patent changes the sound emission parameter (volume) of accompaniment sounds dynamically based on the detected input state of melody sounds. The control circuit adjusts the accompaniment sound volume in real-time according to the presence and intensity of melody sounds in corresponding sound ranges, creating a dynamic parameter adaptation that resolves the contradiction between rich accompaniment and melody distinguishability.
2Device complexity
If the sound emission state of accompaniment sounds is controlled uniformly across all ranges, then the control system remains simple, but the musical naturalness and coherence deteriorate due to inability to highlight melody sounds
Solution Approach 1:
The control system implements local quality control by segmenting the sound spectrum into different ranges and applying differentiated volume control to each range. This allows the system to maintain relative simplicity while achieving natural musical coherence through range-specific adjustments that highlight melody sounds without requiring complex overall restructuring.
Solution Approach 2:
The patent segments the sound emission control into different sound ranges (melody sound range and accompaniment sound range). The control circuit detects melody sounds in specific ranges and independently controls the volume of accompaniment sounds in corresponding ranges, creating a segmented control approach that balances system simplicity with musical naturalness.
Data Source
AI summary
An electronic musical instrument having an accompaniment function which detects the sound volume of inputted melody sounds for each sound range, and controls the sound volume of accompaniment sounds for each sound range in accordance with the detected sound volume of the melody sounds for each sound range.