HPI_METER_MINIMUM
phr->u.c.an_log_value[0] = HPI_METER_MINIMUM;
phr->u.c.an_log_value[1] = HPI_METER_MINIMUM;
an_peakdB[i] = HPI_METER_MINIMUM;
an_rmsdB[i] = HPI_METER_MINIMUM;