Test suites are useful for evaluating one or several sub-components independently of the rest of the system. Use of test suites for component evaluation should always be accompanied by rigorous and explicit consideration of the match between the testsuite evaluation conditions and the actual operating conditions for the component in the integrated system. Any mismatch, such as lack of representativeness of the test suite **data** or of the acoustic signal conditions, may render the test suite evaluation results irrelevant to judging the appropriateness of the component for the task it is to perform in the integrated system. Test suites are a natural part of glass-box and black-box evaluation.