Matlab用viocebox中readwav函数读wav格式文件出问题，求人解决~

cmj278

由于matlab里面wavread函数读不了我要处理的那个wav格式文件，我在网上下载了viocebox，用里面带的readwav能读那个wav文件了，但我plot画出的波形明显限幅了。我把那个wav文件传上来了。
     希望有人帮忙解决一下，或者贴上程序，在此谢过。

我的程序：
[clear all
close all
clc
%%%%提取‘.WAV’信号%%%%%%
[Y,FS,WMODE,FIDX]=readwav('E:\cmj\DC.wav');
Y_length=length(Y);
t=0:1/FSY_length-1)/FS;
figure(1);
plot(t,Y);]


在matlab里help readwav后是这样的：
>> help readwav
READWAV  Read a .WAV format sound file [Y,FS,WMODE,FIDX]=(FILENAME,MODE,NMAX,NSKIP)

  Input Parameters:

        FILENAME gives the name of the file (with optional .WAV extension) or alternatively
                  can be the FIDX output from a previous call to READWAV
        MODE                specifies the following (*=default):

     Scaling: 's'    Auto scale to make data peak = +-1
              'r'    Raw unscaled data (integer values)
              'q'    Scaled to make 0dBm0 be unity mean square
              'p' *        Scaled to make +-1 equal full scale
      Offset: 'y' *        Correct for offset in <=8 bit PCM data
              'z'    No offset correction
    File I/O: 'f'    Do not close file on exit

        NMAX     maximum number of samples to read (or -1 for unlimited [default])
        NSKIP    number of samples to skip from start of file
                (or -1 to continue from previous read when FIDX is given instead of FILENAME [default])

  Output Parameters:

        Y        data matrix of dimension (samples,channels)
        FS       sample frequency in Hz
        WMODE    mode string needed for WRITEWAV to recreate the data file
        FIDX     Information row vector containing the element listed below.

            (1)  file id
                                (2)  current position in file
            (3)  dataoff        byte offset in file to start of data
            (4)  nsamp        number of samples
            (5)  nchan        number of channels
            (6)  nbyte        bytes per data value
            (7)  bits        number of bits of precision
            (8)  code        Data format: 1=PCM, 2=ADPCM, 6=A-law, 7=Mu-law
            (9)  fs        sample frequency

    If no output parameters are specified, header information will be printed.

    For stereo data, y(:,1) is the left channel and y(:,2) the right

    See also writewav.

haidasuchao

这位大哥有没有考虑声道的影响啊？
如果是双声道的wav则需要去掉一个声道：
x=y([1:length(y);1]);