Binaural Hearing Effects of Mapping Microphone Arrayâ s Responses to a Listenerâ s Head-Related Transfer Functions
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This thesis focuses on the mapping of the microphone arrayâ s response to match the characteristics of a human subjectâ s Head-Related Transfer Function (HRTF). The mapping of the response is first explored with a â monaural HRTF matchingâ that filters the response independent of the arrival angles. For arbitrary array geometry with the listener external to the acoustic, the monaural HRTF matching did not provide listeners with enough spatial information to precisely localize sound sources. To correct this, a preprocessor control algorithm was added to the HRTF matching, a â binaural HRTF matchingâ process. The binaural HRTF matching increased the listenersâ performance in perceiving the location of a sound source. With the addition of simulated head movement, the listenersâ perception increased by 20%. An issue with this approach is the use of HRTFs other than the listenersâ measured HRTF, creating a psychoacoustic based error in localization, i.e., front/back confusion.
- Masters Theses