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Applications Of ADC In FPGA Implementation Of LMS Algorithm For Audio Applications

Adaptive filtering techniques are used in a wide range of applications. Adaptive noise canceller is one of the most interesting applications for adaptive filters, especially for the Least Mean Square (LMS) algorithm, due to its strength and calculus simplicity. Noise problems in signals have gained huge attention due to the need of noise-free output signal in numerous communication systems. The adaptive noise cancellation principle is used to remove an unwanted noise from corrupted signal by subtracting it from the corrupted signal. This paper presents an idea behind the hardware designing of ADC and simulation of ADC controller code used for FPGA Implementation of LMS Algorithm for Audio Applications. Since Xilinx Spartan3 FPGA doesn't have a facility of providing audio input directly designing of ADC is very important.