Table 4.

Performance of periodicity enhancement on LP residual signals under different input noise conditions.

Noise & Input Speech SNR(dB)		Residual SegHarm			Residual SNR (dB)
		Noisy	Enhanced($F_0^C$)	Enhanced($F_0^N$)	Noisy	Enhanced($F_0^C$)	Enhanced($F_0^N$)
White Noise	5	1.30	2.10	1.95	−7.87	−1.17	−1.21
	0	1.06	1.80	1.57	−12.27	−3.16	−3.56
	−5	0.74	1.47	1.12	−16.67	−6.94	−7.79
AR Noise	5	1.14	1.83	1.59	−4.46	1.84	1.27
	0	0.83	1.54	1.26	−8.10	−1.88	−2.86
	−5	0.60	1.23	1.07	−12.71	−4.09	−5.10
mean		0.94	1.66	1.43	−10.35	−2.32	−2.96