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SoundPLAN-essential is a single document application including all the basic information for noise control modeling and planning. It calculates noise from roads, railways or industrial noise sources. The computation can include one or multiple noise sources.

The Company began operations in Anaheim, California in 1971 as Acoustic Power Systems, Inc. Initially, the Company specialized in the development of high power acoustic generators. Subsequently, the company focused on the development of electro-dynamic shakers and power amplifiers. The Company's name was changed in 1989 to APS Dynamics, Inc.

This module models the generation and propagation of low frequency sound in complex duct networks. The frequency range is limited to the plane wave region in the connecting pipes. It is based on linear acoustic theory and all elements, e.g., a complex muffler, are reduced to two-ports while terminations and sources are represented as one-ports.

The APS 0109 Zero-Position-Controller automatically controls the zero position of a vibration exciter irrespective of the payload. It is essential to employ a position controller of type APS 0109 especially when working with a vibration exciter without any integrated load compensation.

The APS Dynamics series of air bearing long stroke vibration exciters provide excellent properties for low frequency excitation of accelerometers and other low frequency instruments and sensors. Some models have a horizontal air bearing table coupled to the driver unit that allows high payloads up to 23 kg e.g.

SoundPLAN is an acoustic ray tracing program for noise propagation prediction written by the German acoustical consulting firm, SoundPLAN GmbH.