Objective Evaluation Method of Broadcasting Vocal Timbre Based on Feature Selection

Table 1

Subjective evaluation terms and objective parameters of vocal quality.

Serial number	Subjective evaluation terms	Description of objective parameters
1	Wide	Advantages of wide frequency band, small distortion, large dynamic range, uniform frequency distribution, and outstanding energy in medium and low frequency band
2	Narrow	Narrow frequency band, lack of high and low frequency, medium frequency too; prominent, short reverberation time
3	Bright	Moderate medium and low frequency, enough high frequency energy,; small distortion, and rich harmonic decay process
4	Dark	Lack of medium and high frequency, 5-6 KHz has obvious attenuation and short reverberation time
5	Thin	Lack of medium and low frequency, 300-500 Hz has obvious attenuation,; and the sound energy is insufficient
6	Thick	Medium and low frequency energy is strong, low frequency is full, high frequency is moderate, distortion is small, and reverberation is moderate
7	Soft	Low and medium frequency response range is wide, and distortion is small
8	Hard	Lack of low frequency, medium and high frequency, and high frequency harmonic decay too fast
9	Thorough	Advantages of small distortion, good transient response, enough medium and high frequency reverberation, wide and uniform frequency response
10	Paste	Adequate low frequencies, long reverberation time, and lack of medium and high frequencies
11	Pine	High frequency, low frequency, good transient response
12	Real	The medium and low frequency energy is enough, the high frequency is moderate,; the distortion is small, and the loudness is high
13	Crude	Low frequency energy is large, and medium and high frequency energy is small
14	Fine	Lack of low frequency, moderate medium and high frequency,; insufficient reverberation, and low loudness
15	Tip	Lack of low frequency, medium and high frequency,; high frequency energy is too large, and distortion is large
16	Circular	Wide frequency band, minimal distortion, good transient response, and moderate reverberation
17	Hair	Adequate high frequency and medium high frequency components, and the distortion is large
18	Sand	The passband distortion is large and accompanied by transient distortion
19	Stuffy	Lack of medium and high frequency, serious attenuation above 3-4 KHz,; and excessive low frequency energy
20	Brittle	Lack of low frequency, medium and high frequency partial, frequency response is uneven
21	Clear	Wide and uniform frequency response, rich medium and high frequency, moderate reverberation
22	Muddy	Lack of medium and high frequency, excessive reverberation, and poor transient response
23	Plump	Rich in medium and low frequencies, moderate in high frequency, and appropriate in loudness
24	Shriveled	Lack of medium and low frequency reverberation, reverberation aftersound is too short
25	Clean	Small distortion, good transient response, and moderate reverberation
26	Three-dimensional	Wide frequency response, small distortion, moderate reverberation, and large dynamic range