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function demoai_fft(varargin) %% DEMOAI_FFT FFT display of an incoming analog input signal. % % DEMOAI_FFT creates an analog input object associated with the % winsound adaptor with device

//////// Standard Header file for the PIC18F4550 device //////////////// #device PIC18F4550 #nolist //////// Program memory: 16384x16 Data RAM: 2048 Stack: 31 //////// I/O: 35 Analog Pins: 13

TMS320C24x Evaluation Board Jumper Settings for all programs in this directory. Jumper Jumper Name Position Description Analog supply JP1 1

### uVision2 Project, (C) Keil Software ### Do not modify ! Target (Target 1), 0x0000 // Tools: 'MCS-51' Group (Source Group 1) File 1,1, 0x0 File 1,1,

/******************************************************************************* Copyright(c) 2000 - 2002 Analog Devices. All Rights Reserved. Developed by Joint Development Software Application Tea

/* * Analog conversion stuff for 16C71 - see adc.c for more info */ /* * Read the adc on the specified channel - result is in ADRES */ extern void adc_read(unsigned char channel);

//**************************************************************************** // @Module Analog / Digital Converter (ADC) // @Filename ADC.H // @Project svm.dav //--------------

% Analog Signal Dt = 0.00005; t = -0.005:Dt:0.005; xa = exp(-1000*abs(t)); % % Continuous-time Fourier Transform Wmax = 2*pi*2000; K = 500; k = 0:1:K; W = k*Wmax/K; Xa = xa * exp(-j*t'*W) * D

% Chapter 8: Example 8.6 % Chebyshev-1 Lowpass Analog filter design % Wp = 0.2*pi; Ws = 0.3*pi; Rp = 1; As = 16; Ripple = 10 ^ (-Rp/20); Attn = 10 ^ (-As/20); % Analog filter design:

% Chapter 8: Example 8.4 % Butterworth Lowpass Analog filter design % Wp = 0.2*pi; Ws = 0.3*pi; Rp = 7; As = 16; Ripple = 10 ^ (-Rp/20); Attn = 10 ^ (-As/20); % Analog filter design: