syf6 / signal-processing-1-sampling-and-quatisizing

We process the signal of audio

signal-processing-1-sampling-and-quatisizing

We process the signal of audio

1. Basic MATLAB Language

a. Create a 5 seconds sinusoidal signal of 1kHz; Sampling frequency: 48kHz; use command plot;

b. Plot the symmetrical FFT of the signal; use command fft and fftshift;

c. Quantize the signal with 4 bits;

d. Save and listen to the signal; use function wavwrite;

Extra point: load an audio file and quantize it with fewer bits until the quantization noise is audible.