ECE5775 Final Project: Real-Time-Vocal-Processor Chengxiang Ren, Lingbo Kou, Kang Li 1 Download the whole folder into amdpool. 2 Type in . ./setup in command line 3 Type in make to compile the project 4 Type in ./combine to check the result Note: 1 combine.cpp is the main function which combines fft and pitchshifting together. fft.cpp is the implementation of FFT and IFFT. pitchshifting.cpp is the implementation of pitch shift algorithm. cordic.cpp is the modified version of CORDIC from Assignment 1. The cordic_general function is to calculate the sin and cos of a given fixed_type number. All the blocks are synthesizable. 2 The cordic version of sqrt and arctan is in cordic.cpp 3 The data set "currentFrame.dat" is the input file and "wn.dat" is the look up table of the window function. The output is the time domain signal after pitch shift. Debug Log After executing the line 67 of PitchShifting.cpp: output[m] = real[m] * wn[m] * sqrt_result_reverse; the output will become 0. There is something wrong with the IFFT, after IFFT, the real part became all Zeros. The interpolation result is not good, there are a lot of spikes and hears noisy.