October 7, 2009 - AES New York, Credit Card, Network Audio White Paper, New Tutorial and Journal
Table of Contents
AES New York starts this Friday and is jam-packed with technical sessions and every type of audio gear you can imagine. We're also pleased to announce that Sunday night our Heyser lecture will be given by the legendary Phil Ramone. This event is open to all badge colors so make sure to arrive early and get a good seat.
You should also browse through the rest of our extensive technical program calendar and then register for your badge with the advance registration discount before we close registration later today. (If you read this message too late then you can still pay on-site.)
As a reminder, if you are only planning on attending the exhibition then we have a new member benefit for 2009: a FREE VIP "Exhibits Only" badge! All you have to do is register as a member and enter this VIP code: AESMEM2009 or you can simply login here and follow the instructions in the "VIP Registration" section. This offer is only good if you register in advance.
Show your support with every purchase you make!
Apply for the Audio Engineering Society credit card. Donate to our cause with your everyday purchases. This helps to support the AES's Educational, Technical and Standards activities. The AES will earn $25 with your first purchase and then 1% on all future purchases. Currently only available to AES supporters in the United States. Credit approval required. Apply today!
Analog audio needs a separate physical circuit for each channel. Each microphone in a studio or on a stage, for example, must have its own circuit back to the mixer. Routing of the signals is inflexible. Digital audio is frequently wired in a similar way to analog. Although several channels can share a single physical circuit (e.g., up to 64 with AES10), thus reducing the number of cores needed in a cable. Routing of signals is still inflexible and any change to the equipment in a location is liable to require new cabling.
Networks allow much more flexibility. Any piece of equipment plugged into the network is able to communicate with any other. However, installers of audio networks need to be aware of a number of issues that affect audio signals but are not important for data networks and are not addressed by current IT networking technologies such as IP. This white paper examines these issues and provides guidance to installers and users that can help them build successful networked systems.
The latest in our series of online tutorials continues with 'Large Room Acoustics', given by our forthcoming president, Diemer de Vries. In this detailed educational offering, containing numerous animated illustrations, the physical principles of room acoustics are explained. De Vries shows how by measuring or calculating impulse responses along arrays of receiver positions, the temporal and spatial properties of a sound field can be analyzed and understood, as well as how these properties are related to perceptual quality cues. Several models to calculate impulse responses are discussed. Architectural as well as electro-acoustical measures to correct for acoustical shortcomings are proposed. These aspects are illustrated with examples from practice.
These tutorials are currently only available for viewing by members online and cannot be downloaded for offline viewing.
Francis Rumsey, AES Tutorials Project
This issue includes: