9.1.3 Noise Cancelation What is the practical scenario for such a noise cancellation paradigm? 1)KARAOKE Bar. 2)Noise-cancellation Headphone Signal s(n)+(n） e(n) source Primary input Noise 2物 Filter source Reference input FIGURE9.6 Principle of adaptive noise cancellation using a reference input.FIGURE 9.6 Principle of adaptive noise cancellation using a reference input. 9.1.3 Noise Cancelation What is the practical scenario for such a noise cancellation paradigm? 1) KARAOKE Bar. 2) Noise-cancellation Headphone