exmp6_4.m

用dsp解压mp3程序的算法

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% exmp6_4.m - Decimate timit_1.asc from 16 kHz to 8 kHz
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

load timit_1.asc -ascii;    % load the data file
soundsc(timit_1, 16000)     % play the speech at 16 kHz
pause;
timit1 = decimate(timit_1,2,60,'fir'); % decimate to 8 kHz
soundsc(timit1, 8000)       % play the decimated speech