Re: [alsa-devel] Alsa buffer

On Tue, 14 Jul 2009 08:55:58 +0700 arif setiawan n.arif.setiawan@gmail.com wrote:

into file and open it in Matlab. I want to know if this is correct, because when I try saving alsa buffer on a from recording I still get noise not the voice.

// directly save
FILE *fp1 = fopen("sineout1", "w");

FILE *fp1 = fopen("sineout1", "wb");

for (int i = 0; i < periodsize; i++)
{
    fprintf_s(fp1, "%d\n", data[i]);

You are printing formatted text data here, it needs to be binary. fwrite

}

fclose(fp1);

// with bit shifting from char to short
FILE *fp2 = fopen("sineout2", "w");

FILE *fp2 = fopen("sineout2", "wb");

for (int i = 0; i < num_frames; i++)
{
    short newval = data[2*i+1] << 8;
    newval += data[2*i];

    fprintf_s(fp2, "%d\n", newval);

You are printing formatted text data here, it needs to be binary. fwrite

}

fclose(fp2);

return 0;

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