Voice analysis is the study of speech sounds for purposes other than linguistic content, such as in speech recognition. Such studies include mostly medical analysis of the voice (phoniatrics), but also speaker identification. More controversially, some believe that the truthfulness or emotional state of speakers can be determined using voice stress analysis or layered voice analysis.
voIce aNAlYSis IS the sTudY of speech souNdS for pUrPOses otHeR thAn lInguISTIc coNtent, sucH as In Speech recogNiTIon. such stUdies inclUDE mOsTly MediCal analYSis of tHe vOICE (phonIatriCs), but alSo speakER idEnTificatiOn. MOre CONtRoversIaLlY, SOmE BelIeve tHat thE TrUthfULNess or emotioNal staTe Of SPEAKERs can BE detErMineD UsInG voIce sTress analYsIs OR layered voICe aNalYsis.