Ensemble System Volume Control for Simultaneous Tone Adjustment
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Solution Overview
Problem
Existing ensemble systems between compact disc players and automatic player musical instruments cannot simultaneously vary the loudness of acoustic and electric tones, limiting user control over the volume of both types of tones during music reproduction.
Innovation Solution
An ensemble system comprising a sound signal generator, volume control manipulator, volume control signal generator, first and second volume data changers, and a signal-to-sound converter, allowing users to simultaneously adjust the loudness of both audio and music data-coded tones through a single volume control mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a compact disc player and automatic player musical instrument are used in ensemble, then music reproduction capability is improved, but user control over volume of both tone types is limited
Solution Approach 1:
The volume control manipulator is designed to serve multiple functions: it controls the volume of electric tones from the compact disc player and simultaneously controls the loudness of acoustic tones from the automatic player musical instrument. This multi-functional design allows a single control element to manage both tone types, resolving the limitation of separate control mechanisms and improving ease of operation while maintaining ensemble capability
Solution Approach 2:
A volume control signal generator acts as an intermediary between the volume control manipulator and both the compact disc player and automatic player musical instrument. It receives a single volume control signal and distributes appropriate control signals to both devices, enabling coordinated volume control of electric and acoustic tones through a unified control interface
2Measurement precision
If separate control mechanisms are used for electric and acoustic tones, then individual tone control precision is improved, but system complexity increases
Solution Approach 1:
The control systems of the compact disc player and automatic player musical instrument are merged through a common volume control manipulator and volume control signal generator. This integration allows both electric and acoustic tones to be controlled by a single manipulator, reducing the number of control elements from two separate mechanisms to one unified system, thereby simplifying the overall device complexity while maintaining precise volume control capability
Data Source
AI summary
An audio playback apparatus, an automatic player musical instrument and a voltage controller form an ensemble system for producing music tunes in ensemble between the audio playback apparatus and the automatic player musical instrument, and the voltage controller is responsive to a volume control dial so as simultaneously to vary the loudness of electric tones radiated from the audio playback apparatus and acoustic tones produced through the automatic player musical instrument; when a user rotates the voltage control dial, an audio signal and a quasi audio signal are amplified, the audio signal is supplied to the sound system for converting the audio signal to the electric tones, and the quasi audio signal is demodulated to MIDI music data codes for changing the velocity from the original value to a new value for producing the acoustic tones or electronic tones through automatic playing or composition of waveform data.