VOICE ACTIVITY DETECTOR FOR INTEGRATED TELECOMMUNICATIONS PROCESSING

摘要

Disclosed is an integrated voice activation detector for detecting whether voice is present. In one embodiment, the integrated voice activation detecto r includes a semiconductor integrated circuit having at least one signal processing unit to perform voice detection and a storage device to store signal processing instructions for execution by the at least one signal processing unit to: detect whether noise is present to determine whether a noise flag should be set, detect a predetermined number of zero crossing to determine whether a zero crossing flag should be set, detect whether a threshold amount of energy is present to determine whether an energy flag should be set, and detect whether instantaneous energy is present to determi ne whether an instantaneous energy flag should be set. Utilizing a combination of the noise, zero crossing, energy, and instantaneous energy flags the integrated voice activation detector determines whether voice is present.