Effect of Rear Microphone Spacing on Spatial Impression for Omnidirectional Surround Sound Microphone Arrays
The effect of rear microphone spacing in a five-channel omni-directional array was evaluated in respect of the subjective attributes 'envelopment', 'spaciousness' and 'naturalness'. Preference results were also obtained and a range of different programme material types was evaluated. Results suggest that, although large differences were not noticed, spacing has a statistically significant effect on envelopment and spaciousness, with spacings larger than the critical distance of the room giving rise to higher levels of these attributes. Distinct preference was shown for spacings of three and four metres as opposed to the extremes of two and five metres, in the particular acoustic environment tested, suggesting that beyond a certain microphone spacing the reproduced spatial impression becomes less pleasing or natural.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is temporarily free for AES members.