Construction of Vocal Timbre Evaluation System Based on Classification Algorithm

Table 1

Time-frequency inverse spectral domain-based timbre correlation features.

Musical signal characteristics	Specific gravity	Feature dimension
Start time	3	2
Recession time	4	4
Release time	3	2
Logarithmic start time	6	4
Slope	9	5
Downward slope	8	7
Time focus	4	6
Effective duration	5
Amplitude modulation	2
Frequency modulation	1