AES E-Library

AES E-Library

Acoustical Characteristics of a Sound Screen for HDTV

Document Thumbnail

The HDTV Multichannel Sound Study Group, under the sponsorship of the Hoso Bunka Foundation, has organized approximately 30 members since 1991. To obtain a practical guideline at the multichannel sound production stage is the group's final goal. This paper describes current activity in this regard. The group has developed an acoustically transparent screen (pantent pending) which is useful for HDTV surround sound studios, cinemas, etc. Perforated screens have been used in cinemas, but their transmission coefficients are insufficient for high-fidelity sound reproduction. Studies of the relationships between the holes and transmission characteristics confirm that transmission losses at high frequencies are lower when the holes are smaller and closer together. The transmisThe HDTV Multichannel Sound Study Group, under the sponsorship of the Hoso Bunka Foundation, has organized approximately 30 members since 1991. To obtain a practical guideline at the multichannel sound production stage is the group's final goal. This paper describes current activity in this regard. The group has developed an acoustically transparent screen (pantent pending) which is useful for HDTV surround sound studios, cinemas, etc. Perforated screens have been used in cinemas, but their transmission coefficients are insufficient for high-fidelity sound reproduction. Studies of the relationships between the holes and transmission characteristics confirm that transmission losses at high frequencies are lower when the holes are smaller and closer together. The transmission coefficient is about the same as jersey cloth or Saran nets used in front of loudspeakers. The sound can be monitored in exactly the same direction as the video image with the installation of front loudspeakers positioned at the same height behind the screen.

Authors:
Affiliation:
AES Convention: Paper Number:
Publication Date:
Subject:
Permalink: http://www.aes.org/e-lib/browse.cfm?elib=6484

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 free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!


AES - Audio Engineering Society