The paper deals with the sound quality problem with an emphasis on the sound design within a product design process. Physical properties of sound are introduced. By means of psychoacoustic evaluation of sound quality, basic characteristics for sound evaluation are provided. Both linear and frequency signal changes in a closed area are discussed. Within the process of psychoacoustic sound quality evaluation, computation of suspended ceiling sound absorption is presented, taking into account resonant character of absorption. Sound quality evaluation process is analyzed. An engineer solution to the problem has been proposed regarding the psychoacoustic evaluation of sound quality. A concept of sound quality as a psychological topic is introduced. Psychological methods of sound quality evaluation are given as well as their comparison with physical evaluation criteria. Sound evaluation procedure in a production process is described. Instruments for sound quality evaluation and corresponding measuring procedures are analyzed. Sound quality of a real product – car is analyzed by experimental analysis. Sound design examples of car components have been observed in practice. An application of the annoyance index to the engine sound quality has been studied. The total product sound quality is discussed. On the basis of all performed analyses in this work, some directions are given for the application of sound quality design in new products engineering.