Discriminating between stationary and non-stationa

专利名称：Discriminating between stationary and non-stationary signals

发明人：Karl T. Wigren申请号：US08/248714申请日：19940525公开号：US05579432A公开日：19961126

摘要：A discriminator discriminates between stationary and non- stationary signals.The energy E(T.sub.i) of the input signal is calculated in a number of windows T.sub.i.These energy values are stored in a buffer, and from these stored values a test variableV.sub.T is calculated. This test variable comprises the ratio between the maximum energyvalue and the minimum energy value in the buffer. Finally, the test variable is testedagainst a stationarity limit &ggr;. If the test variable exceeds this limit the input signal isconsidered non-stationary. This discrimination is especially useful for discriminatingbetween stationary and non-stationary background sounds in a mobile radiocommunication system.

申请人：TELEFONAKTIEBOLAGET LM ERICSSON

代理机构：Burns, Doane, Swecker & Mathis, LP.

更多信息请下载全文后查看