Evaluation of Room Speech Transmission Index and Modulation Transfer Function by the Use of Time Delay Spectrometry
نویسنده
چکیده
The literatureshowsthat the modulationtransfer function(MTF) and speech transmissionindex(STI)can becomputedfrom thesquaredimpulseresponseof a linear passivesystem. Thispaper describesan extensionof this methodto measurementsof systemsusing time delay spectrometry(TDS). The new methodmakesuseof boththe realand imaginarypartsof the complexanalytic impulse responseof the system(the energy-timeresponse).This allowsmore accuratedeterminationof STI andMTF becausethe calculationsare basedon measurements thatmorecloselyfollowthe true energydecayin the room.
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