A study of the opposition in terms of duration between long and short vowels in the German phonological system. Tables, graphs and analyses accompany the conclusions discussed. Since physical time is not the only distinctive feature, loss of the temporal cue is compensated for by spectral cues. (Text is in French.) (AMH)

This article describes an experiment in which the following hypothesis was tested and supported: that tension serves to reinforce the phoneme's articulatory characteristic, whether it be closure or openness; and that audibility interferes with perception of tension. (Text is in French.) (AM)

This article analyzes three studies undertaken to scientifically define error patterns, and outlines a methodology for investigating them. The studies concern native English speakers learning French. (Text is in French.) (CLK)

Proposes a scientific methodology for investigation into corrective phonetics, making use of a phonologic roster to classify foreign realizations according to a linguistic pertinence criterion. (Text is in French.) (AM)

This article attempts, through a study on the acoustic and the perceptual level of the contrast between two Dutch vocalic phonemes, to present a rigorous methodology for contrastive phonetics to be used by language teachers. (Text is in French.) (AM)