Table 3 iSDR(0.07dB), iPESQ(1.514),...

Table 3

iSDR(0.07dB), iPESQ(1.514), iSTOI(0.734), iDNSMOS(2.356), results of three stage methods for Libri2Vox test set. Values in ‘()’ represent baseline performance metrics of original mixture signals compared WITH the clean target. “Real only” means use of only real data with cosine similarity less than 0.5 in 1st stage (about 71% of all data).

Model	Method	Stage 1	Stage 2	Stage 3	iSDR	iPESQ	iSTOI	iDNSMOS
Conformer	w/o CL (Real only)	✓			15.42	1.325	0.198	0.650
	w/o CL (Real+SynVox2)	✓			15.46	1.295	0.196	0.640
	w/o CL (Real+SALT)	✓			15.43	1.287	0.194	0.635
	w/1-stage CL (Real only)	✓			15.39	1.401	0.203	0.664
	w/2-stage CL (Real only)	✓	✓		15.89	1.424	0.205	0.664
	w/3-stage CL (Real only)	✓	✓	✓	16.01	1.420	0.205	0.664
	w/3-stage CL (Real + SynVox2)	✓	✓	✓	16.20	1.470	0.206	0.692
	w/3-stage CL (Real + SALT)	✓	✓	✓	16.20	1.466	0.207	0.683
BLSTM	w/o CL (Real only)	✓			12.34	0.852	0.157	0.495
	w/o CL (Real+SynVox2)	✓			12.53	0.903	0.164	0.501
	w/o CL (Real+SALT)	✓			12.54	0.885	0.161	0.491
	w/1-stage CL (Real only)	✓			11.73	0.794	0.149	0.473
	w/2-stage CL (Real only)	✓	✓		12.50	0.922	0.162	0.520
	w/3-stage CL (Real only)	✓	✓	✓	12.65	0.932	0.165	0.531
	w/3-stage CL (Real + SynVox2)	✓	✓	✓	13.07	0.997	0.171	0.554
	w/3-stage CL (Real + SALT)	✓	✓	✓	13.06	0.986	0.170	0.544
SpeakerBeam	w/o CL (Real only)	✓			11.62	0.804	0.150	0.489
	w/o CL (Real+SynVox2)	✓			12.01	0.915	0.156	0.503
	w/o CL (Real+SALT)	✓			12.07	0.887	0.153	0.501
	w/1-stage CL (Real only)	✓			11.17	0.753	0.144	0.473
	w/2-stage CL (Real only)	✓	✓		11.76	0.869	0.159	0.512
	w/3-stage CL (Real only)	✓	✓	✓	11.88	0.899	0.163	0.519
	w/3-stage CL (Real + SynVox2)	✓	✓	✓	12.35	0.974	0.171	0.547
	w/3-stage CL (Real + SALT)	✓	✓	✓	12.34	0.959	0.168	0.533
Voicefilter	w/o CL (Real only)	✓			11.92	0.818	0.158	0.453
	w/o CL (Real+SynVox2)	✓			11.41	0.747	0.149	0.402
	w/o CL (Real+SALT)	✓			11.46	0.728	0.147	0.398
	w/1-stage CL (Real only)	✓			11.34	0.709	0.149	0.414
	w/2-stage CL (Real only)	✓	✓		12.10	0.847	0.161	0.463
	w/3-stage CL (Real only)	✓	✓	✓	12.15	0.856	0.164	0.468
	w/3-stage CL (Real + SynVox2)	✓	✓	✓	12.39	0.927	0.169	0.493
	w/3-stage CL (Real + SALT)	✓	✓	✓	12.26	0.908	0.166	0.476

Model	Method	Stage 1	Stage 2	Stage 3	iSDR	iPESQ	iSTOI	iDNSMOS
Conformer	w/o CL (Real only)	✓			15.42	1.325	0.198	0.650
	w/o CL (Real+SynVox2)	✓			15.46	1.295	0.196	0.640
	w/o CL (Real+SALT)	✓			15.43	1.287	0.194	0.635
	w/1-stage CL (Real only)	✓			15.39	1.401	0.203	0.664
	w/2-stage CL (Real only)	✓	✓		15.89	1.424	0.205	0.664
	w/3-stage CL (Real only)	✓	✓	✓	16.01	1.420	0.205	0.664
	w/3-stage CL (Real + SynVox2)	✓	✓	✓	16.20	1.470	0.206	0.692
	w/3-stage CL (Real + SALT)	✓	✓	✓	16.20	1.466	0.207	0.683
BLSTM	w/o CL (Real only)	✓			12.34	0.852	0.157	0.495
	w/o CL (Real+SynVox2)	✓			12.53	0.903	0.164	0.501
	w/o CL (Real+SALT)	✓			12.54	0.885	0.161	0.491
	w/1-stage CL (Real only)	✓			11.73	0.794	0.149	0.473
	w/2-stage CL (Real only)	✓	✓		12.50	0.922	0.162	0.520
	w/3-stage CL (Real only)	✓	✓	✓	12.65	0.932	0.165	0.531
	w/3-stage CL (Real + SynVox2)	✓	✓	✓	13.07	0.997	0.171	0.554
	w/3-stage CL (Real + SALT)	✓	✓	✓	13.06	0.986	0.170	0.544
SpeakerBeam	w/o CL (Real only)	✓			11.62	0.804	0.150	0.489
	w/o CL (Real+SynVox2)	✓			12.01	0.915	0.156	0.503
	w/o CL (Real+SALT)	✓			12.07	0.887	0.153	0.501
	w/1-stage CL (Real only)	✓			11.17	0.753	0.144	0.473
	w/2-stage CL (Real only)	✓	✓		11.76	0.869	0.159	0.512
	w/3-stage CL (Real only)	✓	✓	✓	11.88	0.899	0.163	0.519
	w/3-stage CL (Real + SynVox2)	✓	✓	✓	12.35	0.974	0.171	0.547
	w/3-stage CL (Real + SALT)	✓	✓	✓	12.34	0.959	0.168	0.533
Voicefilter	w/o CL (Real only)	✓			11.92	0.818	0.158	0.453
	w/o CL (Real+SynVox2)	✓			11.41	0.747	0.149	0.402
	w/o CL (Real+SALT)	✓			11.46	0.728	0.147	0.398
	w/1-stage CL (Real only)	✓			11.34	0.709	0.149	0.414
	w/2-stage CL (Real only)	✓	✓		12.10	0.847	0.161	0.463
	w/3-stage CL (Real only)	✓	✓	✓	12.15	0.856	0.164	0.468
	w/3-stage CL (Real + SynVox2)	✓	✓	✓	12.39	0.927	0.169	0.493
	w/3-stage CL (Real + SALT)	✓	✓	✓	12.26	0.908	0.166	0.476

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