filt0250.h

EP931X系列的WinCE声卡驱动源代码

//****************************************************************************
//
// FILT0250.H - Polyphase sample rate conversion filter with a ratio of 0.25.
//
// Copyright (c) 2000,2001 Cirrus Logic, Inc.
//
//****************************************************************************
static const struct
{
    short sNumPolyPhases;
    short sSampleIncrement;
    short sNumTaps;
    short sUnused;
    short sCoefs[1][13];
} SRCFilter_0_25 =
{
    1,
    4,
    13,
    0,
    {
        {  -127,  -192,     0,  1224,  3699,  6375,  7546,
           6375,  3699,  1224,     0,  -192,  -127 }
    }
};