Crackling noise when resampling from 22050Hz to 48000Hz

[bogru]

The issue also appears when resampling from 44100 to 48000Hz, but less often. It can be best observed when resampling a constant signal. Lets say a file with shorts of value 16384. Then, every several thousand samples a 0 will be present in the output. (and ripples around it). If the value of FFTFIRLEN is decreased to 65536/8, then the 0s are more often in the output signal.

[bogru]

The code used for test is:

    File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);//new File(RawRecordFilePath);
    File reSampled = new File(path, "resampled_22050_16384val_ssrconly_00.raw");
    File beforeResampleFile = new File(path,"22050_16384val.raw");
    try {
        FileInputStream is = new FileInputStream(beforeResampleFile);
        FileOutputStream os = new FileOutputStream(reSampled);

        new SSRC(is, os, 22050, 48000,
                2,//short
                2,//short
                1, Integer.MAX_VALUE, 0, 0, true);
    }catch...