p3.rar_语音信号 复用

function y = draw(d1, d2, d3, data, rd, fs) d = {d1, d2, d3}; M = size(rd, 2); % 画出数据图像，包括编码前信号波形，频谱，合成信号的波形，频谱以及解码后的信号的波形与频谱。 figure for i = 1:3 subplot(310 + i); X = (1:size(d{i}, 2)) * fs / size(d{i}, 2); stem(X, abs(fft(d{i})), '.'); end figure; for i = 1:3 subplot(310 + i); plot((1:size(d{i}, 2))/fs, d{i}); axis([0, M/fs, -1, 1]); end figure; X = (1:size(data, 2)) * fs / size(data, 2); stem(X, abs(fft(data)), '.'); figure; plot((1:size(data, 2))/fs, data); R = max(max(abs(data)), 1); axis([0, M/fs, -R, R]); figure; for i = 1:size(rd, 1) subplot(310 + i); X = (1:M) * fs / M; stem(X, abs(fft(rd(i, 1:M))), '.'); end figure; M = size(rd, 2); for i = 1:size(rd, 1) subplot(310 + i); plot((1:M)/fs, rd(i, 1:M)); axis([0, M/fs, -1, 1]); end end