Patent ID: 8046218
Filing Date: 2011-10-25
Classification: G10L

Abstract:
1. A system for phone detection, the system comprising: a microphone configured to receive a speech signal in an acoustic domain and convert the speech signal from the acoustic domain to an electrical domain; a filter bank coupled to the microphone and configured to receive the converted speech signal and generate a plurality of channel speech signals corresponding to a plurality of channels respectively; a plurality of onset enhancement devices configured to receive the plurality of channel speech signals and generate a plurality of onset enhanced signals, each of the plurality of onset enhancement devices being configured to receive one of the plurality of channel speech signals, enhance one or more onsets of one or more signal pulses for the received one of the plurality of channel speech signals, and generate one of the plurality of onset enhanced signals; one or more across-frequency coincidence detectors configured to receive the plurality of onset enhanced signals and generate one or more coincidence signals, each of the one or more coincidence signals capable of indicating a plurality of channels at which a plurality of pulse onsets occur within a predetermined period of time, the plurality of pulse onsets corresponding to the plurality of channels respectively; an event detector configured to receive the one or more coincidence signals, determine whether one or more events have occurred, and generate an event signal, the event signal being capable of indicating which one or more events have been determined to have occurred; a phone detector configured to receive the event signal and determine which phone has been included in the speech signal received by the microphone.