IBT_SRATE_1X
av->av_srate = IBT_SRATE_1X;
adds_vect.av_srate = IBT_SRATE_1X; /* assume the minimum */
adds_vect.av_srate = IBT_SRATE_1X; /* assume the minimum */
adds_vec.av_srate = IBT_SRATE_1X;
adds_vect.av_srate = IBT_SRATE_1X; /* assume the minimum */
adds_vec.av_srate = IBT_SRATE_1X;