In eight-channel surround sound reproduction, two of the channels are elevated above the listener and their signals are transformed to provide three listening conditions for the evaluation of spatial impression. The elevation channels are either unprocessed, convolved with a short impulse response of a dummy head, or convolved with a dummy head response and also equalized. The six horizontal channels remain the same for each of the overhead conditions and the loudness of the overhead channels is calibrated to be equal for all three conditions. Two anechoic monophonic sound sources are convolved with eight-channel impulse responses previously measured in two large rooms using eight microphones with the overhead information captured by a pair of bidirectional spaced-apart microphones angled 90° between them and pointing diagonally upwards. Listening tests conducted with ten expert subjects show a dependence of spatial impression (height, immersion, preference) on the nature of overhead signals, on the program (sound source), and the choice of room.
Authors:
Benson, David; Ko, Doyuen; Leonard, Brett; Woszczyk, Wieslaw
Affiliation:
McGill University, Montreal, Quebec, Canada
AES Conference:
40th International Conference: Spatial Audio: Sense the Sound of Space (October 2010)
Paper Number:
8-1
Publication Date:
October 8, 2010
Subject:
Spatial Audio: Surround Sound With Height
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 paper yet.
To be notified of new comments on this paper 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 paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.