A speech recognition system comprising a speech input device an analyzer for analyzing input speech to produce analyzed parameters and a discriminator for recognizing the input speech based on lthe analyzed parameters, has store/matching circuit at an input or output port of the analyzer for adjusting write time and read time. The store-matching circuit acts as a buffer with independent read and write addressing.
The distance computation represents a central, constantly recurrent task in sample and speech recognition. It is used in speech recognition as a degree of similarity between a part of a speech utterance and a speech reference. In picture processing and sample recognition, it is used for data compression. The distance computation requires the longest computation time so that a reduction of the computation time results in a considerable efficiency improvement. A reduction of the computation time is achieved by the integration of the distance computation in a memory module in which particularly the reference data are stored. Due to this integration, the other components of the overall system are relieved of this constantly recurrent task and are available for more complex processes in this period of time. This integration makes the distance computation essentially shorter because the communication between memory sections and computation unit takes place directly without utilizing a busy system.
