Most measurements are performed on audio products during the development of the first prototype and at the end of the production line. Physical measurements and perceptional evaluation in the target application (e.g., car interior) are also required to define the target performance, to finish successfully the development and to evaluate the reliability and robustness of the product under the influence of climate, aging, and other external factors. This paper discusses evaluation techniques that are useful in the different phases of the product life cycle to generate a successful product that provides the maximum benefit to the end user.
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