Sequentially Adapted Parallel Feedforward Active Noise Control of Noisy Sinusoidal Signals

Table 1

Performance comparison of the proposed separation-based parallel ANC and conventional single-filter ANC for different tones and SNR combination. Γ_𝑥 (dB) is the maximum possible NAL.

Number	Number of sinusoids, 𝐿	𝜂(dB)	Proposed PFANC NAL (dB)	Single-Filter ANC NAL (dB)	NAL^mixturemax,𝑥 from (62)
1	1	10	25.57	24.61	26.38
2	1	20	33.69	20.16	36.33
3	1	30	44.56	25.97	46.24
4	1	40	53.03	35.60	56.24
5	2	10	31.83	33.21	34.20
6	2	20	42.88	32.20	44.09
7	2	30	52.34	35.91	54.05
8	2	40	58.00	44.64	64.00
9	3	10	31.96	31.86	33.00
10	3	20	41.99	30.69	43.00
11	3	30	50.03	35.34	53.80
12	3	40	55.86	44.43	64.00
13	4	10	31.54	31.43	33.00
14	4	20	40.36	30.5	42.67
15	4	30	48.32	35.49	53.64
16	4	40	58.40	44.35	63.00
21	7	10	31.45	30.05	31.72
22	7	20	41.48	41.87	42.05
23	7	30	49.03	44.65	54.02
24	7	40	57.40	47.65	62.95
17	8	10	31.45	30.64	30.64
18	8	20	44.40	42.14	43.25
19	8	30	42.14	29.52	46.79
20	8	40	55.40	47.06	63.00