What is beam steering in a line array?
Quick answer
Beam steering in a line array is the electronic control of the vertical coverage angle and direction of sound waves, achieved by adjusting the phase and amplitude of individual drivers to aim the audio beam without physically moving the array.
Beam steering is a technique used in advanced line array systems to precisely control the vertical dispersion of sound. By applying specific time delays (phase shifts) and level adjustments to each loudspeaker element, the array can electronically tilt or shape the sound beam, directing it toward the audience while avoiding reflective surfaces or sensitive areas. This allows for consistent coverage across different venue geometries without mechanical re-aiming.
SSOUNDS engineers implement beam steering in our line array systems to optimize coverage in challenging acoustic environments. The technology enables us to maintain uniform SPL and frequency response from the front to the back of the audience, even in venues with balconies or irregular shapes. It also reduces unwanted reflections and improves speech intelligibility, making it a powerful tool for both live sound and installed systems.
Beam steering is distinct from mechanical splay adjustments, which physically change the angle between cabinets. Instead, it uses digital signal processing (DSP) to create virtual acoustic sources. This capability is especially valuable in fixed installations where arrays cannot be moved, or in touring systems that need to adapt quickly to different venues. SSOUNDS integrates beam steering with our proprietary DSP algorithms to deliver predictable, repeatable results.
Key things to consider
- Beam steering electronically controls the vertical coverage angle of a line array by adjusting phase and amplitude per driver.
- It allows aiming sound toward the audience while avoiding walls or ceilings, reducing reflections and improving clarity.
- Unlike mechanical splay, beam steering uses DSP to create virtual acoustic sources without physically moving cabinets.
- SSOUNDS line arrays incorporate beam steering for consistent coverage in complex venues, enhancing intelligibility and SPL uniformity.
- This technology is ideal for fixed installations and touring systems requiring fast adaptation to different room geometries.
Need the right system specced for your venue?
SSOUNDS designs, supplies, installs and tunes professional AVL worldwide.