Sound quality assessment of sewing machines

This paper presents the sound quality analysis of six sewing machines. The machines range in consumer market segments from entry-level, thru mid-level machines, to high-end computer controlled units. Two brands at the three levels are evaluated and compared. The two methods used to determine the sound quality of these machines are jury based listening tests and quantitative sound quality metrics. The details of these methods are presented and discussed. Sound quality results are presented and suggest that metrics can successfully give an indication of customer preference. The results also reaffirm that sound quality analysis can be useful in product design.