Introduction to Electronic Variable Acoustics

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Variable Acoustics

Variable acoustics refers to the ability to modify the acoustic characteristics of a space, such as reverberation time, sound diffusion, reflection patterns and sound envelopment. Traditional fixed acoustic spaces are designed with a specific set of acoustic properties that remain constant. In contrast, electronic variable acoustic systems introduce flexibility by allowing adjustments to these properties, providing tailored sound environments for different purposes. In general they are much more efficient and economical then creating a variable acoustics via physical and mechanical solutions.  Variable acoustics systems (also called: VAS – Virtual Acoustic System and AAS – Active Acoustic System and EAS – Electronic Acoustic System – Acoustic Enhancement or variable acoustic system) are today widely accepted due to the high sound quality which has proven itself the last decade.

Siap Acoustics: Leaders in Variable Acoustic Solutions

Siap Acoustics, a leading provider of acoustic technology solutions, brings the benefits of variable acoustics within reach. SIAP’s electronic variable acoustic systems utilize advanced technology to control and modify acoustic properties. With a comprehensive range of components, including microphones, speakers, signal processors, and user-friendly interfaces, SIAP ensures precise adjustments for adaptable and optimized acoustic environments. The electronic components work in harmony to capture and analyze the sound within the space, apply processing algorithms, and reproduce sound that modifies the acoustic characteristics in real-time as how it should sound in a natural acoustic environment by utilizing innovative patented technology. Siap Acoustics is able to transform the sonic characteristics of a space at the touch of a button.

Understanding Variable Acoustics

Variable acoustics allows for the modulation of sound reflections in a room. By adjusting factors such as the absorption, reflection, and diffraction of sound waves, the acoustics of a space can be changed to match different requirements. This enables the production of different acoustic ambiences ranging from a dry, non-reverberant sound ideal for speech, to a warm, reverberant tone perfect for musical performances.

Siap Acoustics’ Approach to Variable Acoustics

Siap Acoustics has developed its own unique approach to variable acoustics. The SIAP system is unique because the reverberation which is generated by the processor to increase the reverberation time of an auditorium, is composed of sound reflections like in a real concert hall or opera theatre. In other words, SIAP reverberation is fully natural (contrary to artificial reverberation processors and/or acoustic feedback based systems which can sound unnatural or “amplified”). As a result of this natural process the SIAP system is patented worldwide.

Benefits of Variable Acoustics

A variable electronic acoustic system offers additional benefits compared to a standard electronic acoustic system. Here are some advantages of a variable electronic acoustic system:


A variable electronic acoustic system allows for greater customization and adaptability. It provides users with more control over parameters such as the shape of the sound field, sound distribution, and acoustic characteristics of the space. This means the system can be adjusted to suit different room sizes, acoustic conditions, and specific audio requirements.

Optimized sound quality:

By adjusting variables such as delay, reverberation time, and frequency response, a variable electronic acoustic system can optimize the sound quality in a particular environment. It can compensate for unfavorable room acoustics and improve speech intelligibility, musical clarity, and overall listening experience.

Spatial effects and immersion: With variable controls for sound distribution, directionality, and ambience, a variable electronic acoustic system can create immersive and spatial effects. It can simulate surround sound, directional audio, and even 3D audio experiences, enhancing the audience’s sense of presence and immersion.


Given all the advantages and the increasing demand for flexible and multifunctional venues, it is reasonable to expect that electronic variable acoustic systems will be more and more implemented in the future, allowing venues to optimize their acoustics and accommodate a wide variety of events with ease. Besides this, electronic variable acoustic systems can contribute to sustainability in several ways when implemented in venues to make them multipurpose.