Speech signal detection method for hearing aid provides evaluation index from correlation between instant amplitude signal and instant frequency signal

摘要

The speech signal detection method has an analytical signal extracted from an input signal (Sin) and used for calculation of an instant amplitude signal (IA) and an instant phase signal, which is processed to provide an instant frequency signal, e.g. an instant angular frequency signal (IW). An evaluation function providing an evaluation index (n) is calculated from the instant amplitude signal and the instant frequency signal. An Independent claim for a device for detection of the presence of speech signals is also included.