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×î½üÓÃmatlab²É¼¯Êý¾ÝÓöµ½Ò»¸öÎÊÌ⣬ÇóÖú£¡ ²»ºÃÒâ˼£¬½ð±ÒʵÔÚÌ«ÉÙ£¬£¬Ã»°ì·¨¸ø¶à£¬£¬¼ûÁ£¡ ÎÒÓõÄem32 Eigenmike microphone array ²É¼¯Êý¾Ý£¬ ²É¼¯Êý¾ÝΪ32ͨµÀ£¬²É¼¯µ½µÄÊý¾Ý±£´æÎªwav¸ñʽ£¬µ«ÊÇÈ´²»ÄÜͨ¹ýmatlab¶ÁÈ¡³öÀ´£¬ÏÔʾ: ÎÒÓ㺠[x,fs,Nbits] =wavread('C:\Documents and Settings\Administrator\×ÀÃæ\wav\file1') ÌáʾÎÒ£º ??? Error using ==> wavread at 166 Data compression format (Format #65534) is not supported. ºóÀ´ÎÒÔÚÍøÉÏËÑÁËËÑ£¬·¢ÏÖÓÐÈËÓöµ½ÏàͬµÄÎÊÌ⣬µ«ÊÇËûµÄ»Ø´ðÎÒ²»Ì«Ã÷°×£¬£¬Çë´ó¼Ò°ïÎÒ¿´¿´£¡ The problem is that the file is not actually "normal PCM data", like they write in the source, but actually in the "exstensible" format (which is 0xfffe) - see WAVE header documentation. Later in the header (as part of the GUID field) it is specified that the PCM is saved in IEEE float format. Changing the "compression code" to 0x0003 (eg. in a hex editor), you can now read the wav in matlab and it actually looks like a wave file in 4 channels... A small matlab hack, that does the trick is: fname='out.wav';f=fopen(fname,'r+'); fseek(f,20,0); fwrite(f,[3 0]); fclose(f); y=wavread(fname); (overwrite the compression code in the file with one matlab understands before loading it) - you could also just do the open-seek-write-close to a bunch of recorded wav files to fix them... after "fixing" the file it now also works in standards compliant audio players like VLC and not just in windows media player... Edit: Fixed contents to match the truth rather than my initial guess so noone get's confused and merged in my second post... |
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