| 摘要 |
PURPOSE:To attain to enhance accuracy for comparing tone quality, by imparting data from an automatic bias adder to frequency analytical data to be measured while allowing the added data to coincide with the frequency spectrum intensity of reference sound. CONSTITUTION:Data recorded from an object to be measured by a microphone 11 is supplied to a bias adding and subtracting apparatus 17 while analyzed by a frequency analytical apparatus 12 and the processed data is applied to a comparing processing apparatus 3 as a spectrum 28. An automatic bias adder 26 automatically adds and subtracts a predetermined bias value to operate the apparatus 17 and the difference of the spectrum 27 of reference sound and the spectrum 28 is compared at every frequency component by the apparatus while the compared value is counted by a number counter 25 and the number of the counter 25 of which the counted difference is within a predetermined value is supplied to the adder 26. Therefore, the intensities of spectra 27, 28 are coincided to make clear the discrimination of the same quality part and the different quality part of the analytical data of the frequency to be measured and the frequency of the reference sound and the comparison of tone quality can be performed with high accuracy. |
