ANALOG SIGNAL REPRODUCER
PURPOSE:To apply an analog signal reproducer to a sound synthesizer and to realize the effective use of the storage capacity of a memory, by providing a means to obtain the sound frequency information out of the sound information read out of the memory and a means to vary the reading speed of the me...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To apply an analog signal reproducer to a sound synthesizer and to realize the effective use of the storage capacity of a memory, by providing a means to obtain the sound frequency information out of the sound information read out of the memory and a means to vary the reading speed of the memory in response to the above-mentioned frequency information. CONSTITUTION:A memory 101 to which the sound information is recorded is loaded to a reproducer 301. An address counter 302 is connected to an address terminal of the memory 101, and the clock pulse having variable frequency is applied to the counter 302 from a voltage control oscillator (VCO) 303. An A/D conversion is given to the frequency information of 2 bits which is read out of the memory 101, and the oscillating frequency of the VCO303 is controlled by the output voltage of the A/D conversion. The oscillating frequency of the VCO303 is set in response to the oscillating frequency of a VCO113 which is obtained in a writing mode. In such a constitution, the memory 101 performs the reading at a speed corresponding to the stored frequency information. Thus an effective application is possible for a memory element. |
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