SNR	方法	N1	N2	N3	N4	N5	N6	N7
−5	STFT	0.6186	0.5492	0.4894	0.6675	0.6902	0.9271	0.6955
−5	GFT	0.5949	0.5308	0.4715	0.6445	0.6572	0.9075	0.6817
0	STFT	0.7503	0.6996	0.652	0.7927	0.8108	0.9461	0.7813
0	GFT	0.7309	0.685	0.6291	0.7724	0.7837	0.9317	0.7757
5	STFT	0.8377	0.8117	0.7759	0.8662	0.8814	0.9554	0.8407
5	GFT	0.8241	0.8045	0.7586	0.8507	0.8635	0.945	0.8406
10	STFT	0.8879	0.8787	0.8507	0.9034	0.9182	0.9599	0.8823
10	GFT	0.8789	0.8768	0.8384	0.8908	0.9054	0.9515	0.8845
15	STFT	0.9157	0.915	0.8908	0.9216	0.9367	0.9622	0.911
15	GFT	0.9094	0.9143	0.8802	0.9092	0.9256	0.9543	0.9128
20	STFT	0.9311	0.9338	0.9119	0.9307	0.9461	0.9634	0.9298
20	GFT	0.926	0.9329	0.9009	0.917	0.935	0.9553	0.9305