TABLE VII.

ESTOI (%) scores for different two-stage and single-stage DFNs, LSTMs and BLSTMs in recorded reverberant conditions.

T60 (s)		0.32		0.47		0.68		0.89
TIR (dB)		−12	−6	−12	−6	−12	−6	−12	−6	Average
Unprocessed		22.2	33.0	17.4	27.2	20.9	32.1	16.3	26.7	24.5
DFN	Single-stage Mapping	39.4	50.3	33.5	44.7	38.2	49.7	28.6	39.7	40.5
	Single-stage Masking	47.5	59.8	40.0	52.2	46.3	59.1	35.5	48.2	48.6
	Mapping+Mapping	41.3	51.8	35.7	46.6	41.4	52.9	30.8	41.6	42.8
	Mapping+Masking	47.2	59.2	39.8	51.7	46.3	59.0	35.1	47.6	48.2
	Masking+Mapping	44.9	55.0	39.0	49.7	45.3	56.3	33.1	44.0	45.9
	Masking+Masking	50.1*	62.0*	42.3*	54.1*	49.4*	61.8*	36.8*	49.5*	50.7*
LSTM	Single-stage Mapping	44.1	53.8	38.2	49.0	44.6	55.3	33.1	43.8	45.2
	Single-stage Masking	50.9	62.6	43.7	55.6	50.4	62.7	38.3	51.1	51.9
	Mapping+Mapping	44.2	53.8	38.6	49.3	45.1	56.0	33.6	44.3	45.6
	Mapping+Masking	49.9	61.2	42.8	54.5	49.6	61.9	38.0	50.4	51.0
	Masking+Mapping	47.2	57.0	41.6	52.2	47.9	58.6	35.5	46.4	48.3
	Masking+Masking	51.7	63.3	44.5	56.3	51.3*	63.6*	39.0	51.5	52.6
BLSTM	Single-stage Mapping	48.1	57.8	42.0	52.7	47.5	58.6	36.1	47.3	48.8
	Single-stage Masking	52.5	64.0	45.2	57.0	50.8	63.1	40.1	52.9	53.2
	Mapping+Mapping	49.7	59.8	43.1	54.1	49.3	60.5	35.6	49.1	50.1
	Mapping+Masking	50.6	62.1	43.4	55.0	50.1	61.9	37.8	52.1	51.6
	Masking+Mapping	51.1	61.2	44.7	55.8	50.8	61.9	37.6	49.4	51.6
	Masking+Masking	53.2	64.7*	46.0	57.8*	52.8*	64.9*	39.9	53.0	54.0*