Speech recognition analyser circuit - has multichannel filters operating into comparators to provide sampled values for memory

摘要

The accumulation of data as part of a speech recognition process is based upon a number of discrete frequency pass band stages. The input signal is amplified(LV) and transmitted to a multi-channel filter with a number of band pass stages. The filtered outputs are processed through low pass stages(S) before transmission to a comparator stage (VG). The final valves are stored in a memory bank (Sp) for further processing. A threshold switching stage is located between the low pass filters and the comparator stages.