语音分帧与加窗基于MATLAB

%实验要求一：语音分帧显示 clc clear all close all [x,Fs]=audioread('C3_1_y.wav'); % 读入数据文件 wlen=200; inc=100; % 给出帧长和帧移 N=length(x); % 信号长度 time=(0:N-1)/Fs; % 计算出信号的时间刻度 signal=enframe(x,wlen,inc)'; % 分帧 i=input('请输入起始帧号(i):'); tlabel=i; subplot 411; plot((tlabel-1)*inc+1:(tlabel-1)*inc+wlen,signal(:,tlabel),'b'); axis tight% 画出时间波形 xlim([(i-1)*inc+1 (i+2)*inc+wlen]) ylim([-0.1,0.1]) title(['(a)当前波形帧号：', num2str(i)]); ylabel('幅值'); xlabel('帧长'); tlabel=i+1; subplot 412; plot((tlabel-1)*inc+1:(tlabel-1)*inc+wlen,signal(:,tlabel),'b'); axis tight% 画出时间波形 xlim([(i-1)*inc+1 (i+2)*inc+wlen]) ylim([-0.1,0.1]) title(['(b)当前波形帧号：', num2str(i+1)]); ylabel('幅值'); xlabel('帧长'); tlabel=i+2; subplot 413; plot((tlabel-1)*inc+1:(tlabel-1)*inc+wlen,signal(:,tlabel),'b'); axis tight% 画出时间波形 xlim([(i-1)*inc+1 (i+2)*inc+wlen]) ylim([-0.1,0.1]) title(['(c)当前波形帧号：', num2str(i+2)]); ylabel('幅值'); xlabel('帧长'); tlabel=i+3; subplot 414; plot((tlabel-1)*inc+1:(tlabel-1)*inc+wlen,signal(:,tlabel),'b'); axis tight% 画出时间波形 xlim([(i-1)*inc+1 (i+2)*inc+wlen]) ylim([-0.1,0.1]) title(['(d)当前波形帧号：', num2str(i+3)]); ylabel('幅值'); xlabel('帧长');