The current paper refers to the particular phonetic and phonological substance of the Chinese language. The key topics include the acoustic features of tonal languages, speech sound and audio-perception, as well as some issues of acquisition of Chinese language skills and reception conditions. The difficulties in tonal phonemes identification in hearing-impaired native Chinese and in non-tonal language users learning Chinese as a foreign language inspire the scientists to research the register of tones, acoustic features of tonal languages, the fundamental frequency (F0), tone contour and duration, and the speech signal – natural and subjected to filtration.
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