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DrWangZhengsheng-LectureNotesDrWangZhengsheng-LectureNotesDrWangZhengsheng-LectureNotesDrWangZhengsheng-LectureNotesDrWangZhengsheng-LectureNotesDrWangZhengsheng-LectureNotesDrWangZhengsheng-LectureNotesExample:Recordandplayback5secondsof16-bitaudiosampledat11.025kHz.Fs=11025;y=wavrecord(5*Fs,Fs,'int16');wavwrite(y,Fs,‘d:\matlab.wav’);%存储录音wavplay(y,fs);%播放录音DrWangZhengsheng-LectureNotesDrWangZhengsheng-LectureNotesExample:Recordandplayback5secondsof16-bitaudiosampledat11.025kHz.Fs=11025;y=wavrecord(5*Fs,Fs,'int16');wavwrite(y,Fs,‘d:\matlab.wav’);%存储录音wavplay(y,fs);%播放录音%读取录音文件[y,Fs,nbits]=wavread('d:\matlab.wav');DrWangZhengsheng-LectureNotesSupporteddatatypesforYandthecorrespondingnumberofbitspersampleusedduringplaybackineachformatareasfollows:DataTypebits/sample'double'16'single'16'int16'16'uint8'8Example:Recordandplayback5secondsof16-bitaudiosampledat11.025kHz.Fs=11025;y=wavrecord(5*Fs,Fs,'int16');wavwrite(y,Fs,‘d:\matlab.wav’);%存储录音wavplay(y,fs);%播放录音%读取录音文件DrWangZhengsheng-LectureNotesExample:对获取的语音信号进行傅里叶变换.……N=length(y);%求语音信号的长度Y=fft(y,N);%傅里叶变换DrWangZhengsheng-LectureNotesExample:将频域函数经傅里叶逆变换变为时域函数.……语音“matlab,matlab,matlab”的语音波形和频谱。语音“湖南师大”的语音波形和频谱。
