| 摘要 |
A system including a text memory (24) having stored therein digital information representing a given reading text having indices at a plurality of text-locations, a sound memory (22) having stored therein digital information representing a prerecorded speech corresponding to the given text and having indices at a plurality of speech-locations corresponding, respectively, to the plurality of text-locations, a main processor (26) associated with the sound memory and the text memory which correlates between the speech-indices and the text-indices such that each text-location and its respective speech-location are substantially simultaneously addressable, a sound processor (32) associated with the main processor which processes digital information from the sound memory and provides an output corresponding to a reproduction of the prerecorded speech, a sound producing unit (36) which plays-back the reproduced speech to a user and a rate controller (30) associated with the sound processor which controls the rate at which the speech is reproduced, wherein the sound processor maintains the pitch of the reproduced speech substantially the same as the pitch of the prerecorded speech.
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