Abstract: Three experiments were carried out to investigate the effects of normalization of the speaker and contextual compensation on tone perception, usingthe paradigm of Garner speed classification. It was shown that the speakerand contextual variation produced significant Garner Interference (GI) withtone perception,and tone variation produced the same degree of GI with voicediscrimination, when the speaker and context variated in an experimentbolck, GI indexed by reaction time was approximately equal to the sum ofGI produced soparately by the speaker and contextual variation, GI indexedby percentage of correct responses was greater than the sum of GI by the twovariations.

Key words: Speaker normalization, contextual compensation, the paradigm of Garner speed classification, tone perception