Viking DLE-300 Manuel d'installation télécharger pdf (Page 7)

The information contained herein is proprietary to Lencore Acoustics Corp. and copyright protected. No part of this manual can be

copied, used or distributed without prior authorization from Lencore Acoustics Corp.

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How Does Sound Masking Work?

Sound masking works because it changes the ‘dynamic range’ of sound in an

environment.

Typically, the dynamic range in most environments is large, meaning that there is a

great degree of difference between the lowest, or ambient, sound level and the highest

levels of sound, when people are actively speaking and working. Work environments

are perceived as noisy precisely because of this large dynamic range because here, the

higher dB sound of normal speech is easily heard in a backdrop of a lower, ambient

background sound.

Sound masking works by subtly raising the ambient background sound level, thereby

reducing sound’s dynamic range. This effectively “masks” unwanted noise, makes

speech unintelligible (creating privacy), and makes the work environment acoustically

comfortable.

What are the Criteria for Performance?

The sound from a masking system must accomplish two things:

1. It must mask speech (providing measurable speech privacy)

2. It must not be a distraction (must be a “comfortable” sound).

Getting a Comfortable Sound

How do you add sound with a masking system so the system itself is not distracting or

annoying? This is the most nuanced aspect of sound masking and consequently, is

where most sound masking systems fail.

A sound masking system must be tuned so that the frequencies fall within the preferred

sound masking curve with tight tolerances for sound uniformity for all frequencies.

Lencore has mastered these nuances and has asked you to provide the right sound for

the project that you are installing. Following the tuning section carefully and please call

Lencore’s main office if you have any questions.

To learn more about sound masking and Lencore’s technologies, visit

www.lencore.com

, or contact Lencore at (516) 682-9292.

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Viking DLE-300 Manuel d'installation Page 7