CPC G10K 15/02 (2013.01) [B60Q 5/008 (2013.01); H04R 1/025 (2013.01); H04R 2499/13 (2013.01)] | 9 Claims |
1. A combined-wave data generation method for generating plural combined-wave data pieces each representing a data series indicating one combined wave obtained by combining plural sound data pieces having mutually different frequencies, the combined-wave data generation method comprising:
a first step of obtaining a reference time length which is a time length of the one combined wave, a sampling interval time, and a frequency fluctuation rate of the one combined wave;
a second step of calculating a total number of samples in the data series indicating the one combined wave on the basis of the reference time length, the sampling interval time, and the frequency fluctuation rate;
a third step of calculating a rotation angle with respect to the sampling interval time on the basis of the total number of samples for each of the plural sound data pieces having the mutually different frequencies;
a fourth step of calculating combined values for the total number of samples, the combined value being obtained by combining respective values of the plural sound data pieces having the mutually different frequencies, the values being calculated on the basis of the rotation angles for the respective sampling interval times;
a fifth step of generating a series of the combined values for the total number of samples for the respective sampling time intervals as a data series of the one combined-wave data piece; and
a sixth step of generating data series representing the respective combined-wave data pieces by performing a sequence of the processes of the second step, the third step, the fourth step, and the fifth step by a predetermined times while changing the frequency fluctuation rate every time when the sequence of the processes is executed once.
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