| 摘要 |
Disclosed is an audio source data generating system including a central process unit(22) which controls the overall system by scanning a key information selected at a keyboard(21), a mantissa portion data memory(23) which outputs the audio source data of a mantissa portion according to a designated address of the central process unit(22), an exponential portion data memory(24) which outputs the audio source data of an exponential portion according to the counting value of a counter(26), a comparator(25) which generates a count pulse to the counter(26) when compares a range designation address with the sample point address designated by the central process unit(22) and it is identical, a multiplier(27) which multiplies the mantissa portion data and the exponential portion data to an information value of the keyboard touch speed input from a touch function generation portion(29), an adder(28) which adds the mantissa portion data and the exponential portion data to an information value of the keyboard touch speed input from a touch function generation portion(29), and a signal level determining portion(31) which determines the wave level of an output signal by adding the exponential portion data to the value of the mantissa portion data converted into a analog signal through a D/A converter(30). Thus, the audio source data can be generated without effect of determination area of resolution.
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