A connection system for conduits, fittings or assemblies which are intended for carrying a fluid acted upon by a pressure, in particular for systems carrying carbon dioxide. A recording and searchreproduction of speech information is ensured without manual designation and classification and without the requirement of a vocabulary. In addition, the two layers of photoresist exhibit different etch resistant properties, for subsequent selective reactive ion etching steps. If the excerpt are deemed satisfactory, DVD’s are developed and provided to the practitioner. In a multiple-sample implementation, the samples may be used for timing phase selection, for detection of a known initial pattern of a burst of information to thereby detect the start time of a an information burst, or both.