Methods and Limitations of Line Source Simulation
Stefan Feistel1, Ambrose Thompson2, Wolfgang Ahnert1; "Methods and Limitations of Line Source Simulation"; Convention paper presented at the 125th AES Convention, October 2 to 5, 2008, San Francisco, CA, USA. https://www.aes.org/e-lib/browse.cfm?elib=14676
1: Ahnert Feistel Media Group, Berlin, Germany
2: Martin Audio, Bucks, United Kingdom
Although line array systems are in widespread use today, investigations of the requirements and methods for accurate modeling of line sources are scarce. In previous publications the concept of the Generic Loudspeaker Library (GLL) was introduced. We show that on the basis of directional elementary sources with complex directivity data finite line sources can be simulated in a simple, general and precise manner. We derive measurement requirements and discuss the limitations of this model. Additionally, we present a second step of refinement, namely the use of different directivity data for cabinets of identical type based on their position in the array. All models are validated by measurements. We compare the approach presented with other proposed solutions.