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    • 7. 发明授权
    • Electronic musical instrument
    • 电子乐器
    • US4170160A
    • 1979-10-09
    • US914059
    • 1978-06-09
    • Jong Guo
    • Jong Guo
    • G10H1/20G10H5/00G10H5/06G10H5/10
    • G10H1/20G10H5/002Y10S84/08Y10S84/20
    • An electronic musical instrument includes a linear voltage divider network including a plurality of equal series resistance elements for generating a first output voltage as a function of the state of a plurality of tone select keys. This first voltage is converted to a second voltage which selectively varies exponentially as a function of the selected tone. The second voltage is compared with a ramp generator output to set and reset a latch which generates an audio frequency signal thereby. The audio frequency signal is coupled to an octave generator controlled by octave select keys for outputting the tone in a selected octave for output as sound via a speaker. Sharp and flat keys are also provided to cause the first voltage to vary in a way which emulates the functioning of a standard keyboard.
    • 电子乐器包括线性分压器网络,其包括多个相等的串联电阻元件,用于产生作为多个音调选择键的状态的函数的第一输出电压。 该第一电压被转换成第二电压,其选择性地按照所选音调的函数变化地变化。 将第二电压与斜坡发生器输出进行比较,以设置和复位产生音频信号的锁存器。 音频信号被耦合到由八度音阶选择键控制的八度发生器,用于输出所选择的八度音调中的音调,以便通过扬声器作为声音输出。 还提供了夏普和平键以使得第一电压以模拟标准键盘功能的方式变化。