RETRACTED: Investigation on the Extraction Methods of Timbre Features in Vocal Singing Based on Machine Learning

Table 2

Pitch frequency.

	0	1	2	3	4
C	16.254	32.547	65.375	130.247	261.354
D	18.657	36.547	73.145	146.215	294.314
E	20.864	41.357	83.145	167.432	327.364
F	21.634	43.861	87.347	179.658	349.127
G	24.427	48.984	96.997	196.385	392.347
A	27.439	55.451	111.457	221.321	441.217
B	30.876	61.247	123.214	246.254	493.435