Digital Electronic Organ Function: Each Musical Note Corresponds to a Specific Frequency Signal
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Resource Overview
A digital electronic organ generates sound by mapping each musical note to a specific frequency signal. It utilizes a digital signal generator to produce sounds at specified frequencies, simulating a virtual keyboard interface with 15 keys labeled A through O. Sound is triggered on mouse press and stops on release. Additionally, the system can generate common waveforms such as sine, square, and triangle waves through a graphical interface for selecting waveform type, frequency, amplitude, and phase parameters. The implementation involves generating digital signals based on user-defined parameters, writing them to the sound card's buffer, and finally outputting the audio through the sound card hardware.
Detailed Documentation
The digital electronic organ functions by invoking a digital signal generator to produce sounds at specific frequencies, thereby realizing a virtual keyboard instrument. The interface includes 15 keys labeled A through O, where sound generation is activated on mouse press and terminated on release. Beyond basic keyboard functionality, the system can generate common waveforms including sine waves, square waves, and triangle waves. A graphical interface enables selection of waveform parameters such as waveform type, frequency, amplitude, and phase. Based on user-specified waveforms and parameters, the digital electronic organ generates corresponding digital signals, writes them to the sound card's buffer, and ultimately outputs the audio through the sound card. This implementation provides diverse musical expression and performance capabilities through digital signal processing techniques.
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