Designing for Product Sound Quality (Mechanical Engineering by Richard Lyon

By Richard Lyon

"Provides formerly unavailable fabric in sound caliber the most important for a greater layout strategy. provides all features of product sound caliber, resembling ""rules of thumb"" and layout formulation and charts. Covers sound radiation and concentrating on, resolving, and checking out layout features."

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Many consumers are not experienced in listening with headphones, and unless the sound is binaurally recorded, the auditory images will not be properly located in space. Loudspeakers provide a localized auditory image, which may be suitable, particularly for listening to appliance sounds, but not when the sounds surround the listener, as when one is seated inside an automobile. In such cases binaural listening is preferred. It is possible to provide binaural sound using loudspeakers for a single listener, but not for a group of listeners.

The user will not regard such a sound in the same light as sounds characteristic of the fan. Such a sound might be the result of a problem that will lead to the failure of the fan or a danger of overheating. The user will have concern about using such a product. Even if somehow the user becomes convinced that a breakdown or danger is not imminent, the sound will be attention grabbing and make the fan unsatisfactory as a product. It is not the loudness of uncharacteristic sounds that is the problem, it is their presence that is the problem.

This requires that the sounds of mechanisms be separated, which may be accomplished by both mechanical and electronic means. The duration of the sounds, the time between presentations, the sequencing of sounds, and other details of how sounds are presented are a part of the experimental design. Various designs, such as central composite and factorial are popular. 4)The next step is to conduct the listening tests. The first issue is how to present sounds to the jury. Although headphones are convenient, there can be problems.

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