Perception-based elevation filters allow illusory sound source elevation in loudspeaker listening. The filters are applied to early-reflection parts of two-channel stereophonic room impulse responses to augment spatially the perception of the reverberant field. Two types of elevation filters are applied to the early reflections, both targeting 60? elevation: a frequency-weighting filter based on Blauert’s directional band theory and a difference-spectrum filter. A listening test examines the effect on perceived spatial ‘extension’ and spectral ‘colouration’ compared to the unfiltered reference stimulus. The results show that the elevation filters extend the auditory space slightly, and the perceived colouration by those filters is within an acceptable level. However, a higher extension level tends to yield more prominent colouration. Additionally, elongated reverberation time or amplified early reflection levels result in a more significant extension, allowing control of the elevation filter applications to a desired extension level while restraining colouration to a tolerable level.
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this Spatial Perception yet.
To be notified of new comments on this Spatial Perception you can
subscribe to this RSS feed.
Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this Spatial Perception then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.
