sentences:  There was a retention interval of 10 seconds between the final item and the recall of target items.Irrelevant sound took place when a male voice was spoken in the left headphone throughout the retention interval, right before the recall of items.The results from this study showed that there was a significant effect of irrelevant sound under articulatory suppression when the list items were followed by an auditory tone, but the effect was abolished when followed by a spoken suffix.