Speech Enhancement Systems – An overview
General System Principle
The Speech Enhancement system is designed to ‘electronically’ assist in replacing the losses encountered by the physical glazed barrier between client & staff.
The system consists of speakers & microphones on both sides of the ‘physical’ barrier. These can take the form of separate items or in the case of the staff side, a Combo Unit’ where the speaker & microphone are ‘combined’ in the same unit to increase performance & reduce the counter ‘footprint’ required.
The system operates in what is known as ‘Duplex Mode’, that is, conversations are 2 way without switching disruption, as per how normal conversation & the telephone operates.
The system has been designed to be a Speech Enhancement product, & not a public address system. This should be established at the earliest point in the specification of the equipment, or as soon as possible to avoid potential problems prior to or immediately following the system being installed.
Specialised microphones / speakers and calculated placement of these items used are the key elements to successful operation and performance of the Speech Enhancement System.
The electronics speech processor / amplifier is an integral part of the system and has been designed using advanced acoustic design to maximise the operation when in use. The system allows in operation, volume levels approaching the physical limits of ‘acoustic feedback’. This is where the microphone picks up the sound from the opposing speaker and as it is then re-amplified by the system resulting in the familiar ‘screeching’ sound we hear. The Advanced Acoustic & Electronic design allows this to be lessened with correct installation & operation.