What makes Audiostat different from other Ambient Noise Compensation Devices:

All other devices that we know of require a calibration process which must be rerun each time any part of the sound system or the acoustic environment is changed (such as amplifier settings, number of loudspeakers, in-store displays, installation of new factory equipment, location of the sensing microphone, crowd size etc.) In contrast Audiostat continually monitors PA system intelligibility/audibility conditions as determined by the environmental noise and calibrates itself if required.


What is the difference between Audibility and Intelligibility:

Intelligibility is the measure of the human ability to comprehend a speech signal in any given environment. It is expressed as a percentage of the number of the words understood correctly to the total number of words heard. That is to say that if an announcement containing 20 words came over the PA and you heard only 10 of those words, then the intelligibility would be measured at 50%. You might have heard the other words but couldn't quite make them out. Those words were audible but not intelligible! Where the comprehension of delivered speech is important, intelligibility - not audibility -defines the efficiency of a PA system. Overall, less than 85% intelligibility is generally considered to be inadequate for most PA applications. All of this works for music too!


What causes Loss of Intelligibility:

In public environments, the most important cause of intelligibility loss is the interference caused by ambient noise. The impact of ambient noise on speech intelligibility depends in a complex way on several statistical properties of the noise, such as average amplitude, amplitude fluctuation, frequency spectrum etc.
Audiostat takes care of all of this stuff!


How does Audiostat work:

The core of Audiostat is a DSP (Digital Signal Processing) chip. The DSP algorithm first determines what effect the ambient noise is having on how well we hear and understand what is being broadcast over the sound system. In this respect it monitors several statistical properties of noise, its frequency spectrum, average amplitude, amplitude fluctuation, etc. while simultaneously, making continuous, subtle adjustments to the signal level to ensure that the messages remains intelligible without being annoyingly loud. The changes it makes provide the optimal sound level setting based on the interaction of the background noise and the PA signal. In effect it rides on the background noise up and down and adjusts the sound level of the PA system AND it does it seamlessly without ever needing any fiddling!


What does Audiostat do for YOU:

Audiostat will significantly improve the audibility and intelligibility of your PA systems output - and, it will never be too loud. The vast majority of todays PA systems are non reactive with no means of automatically adjusting for signal audibility let alone intelligibility!

Audiostat utilizes the latest in digital signal processing technology to transform your passive sound system into a reactive system that compensates seamlessly for large fluctuations in ambient noise.

Audiostat creates a comfortable yet effective audio environment for everyone in all situations.