d&b audiotechnik Introduces HeadroomCalc Available in ArrayCalc V11 at ISE 2023

HeadroomCalc 1d&b audiotechnik today introduced HeadroomCalc, available in ArrayCalc V11. Using patent-pending HeadroomCalc, technology now predicts the reaction of a d&b system to a specific audio signal, providing a more precise sound pressure level (SPL) and headroom calculation than any other solution currently available.

Accurate prediction of the system’s performance is required for a number of reasons:

  • To choose the right system and/or system amplifier, both of which influence the budget needed for a project.
  • To comply with health and safety regulations at live events that specify the limits regarding onsite sound exposure levels.
  • To prove that pre-recorded alarm messages can be reproduced with a certain SPL to satisfy tenders or legal requirements.

The latest update to d&b´s ArrayCalc simulation software now includes HeadroomCalc, a patent-pending and advanced time-domain (calculation) model.

HeadroomCalc predicts the reaction of a d&b system to specific audio signals, providing a more precise SPL calculation by processing any user-defined audio file through a simulation of the configured audio system in the following three separate steps:

1) The input signal — often a pre-recorded alarm message or a recording of the band — is fed into the simulated loudspeaker processing of the selected d&b system amplifiers in the time domain. The intermediate results are output voltage and gain reduction signals for every amplifier channel within the system over time.

2) The output voltages are combined with the simulated impulse responses of the connected loudspeakers. This yields the sound pressure signals for every loudspeaker at up to five individual definable receiver points.

3) The total sound pressure signal is created for all receiver points, which is the sum of all sound pressure signals at each point. This is then used to derive the SPL metrics in the same manner a portable SPL meter would operate at each defined measurement point.