Hi all,

It's been a long time since i ever login into lowyat , i even forgotten my username and password.But anyway i stumble upon this thread by coincidence.

I'm just wanted to share and gained some knowledge here about this area.I'm currently an Snr Engineer in of one of the leading manufacturer's of speakers in the market.I do not have any education background regarding this area but i work my way up early years at many AV and ELV companies till now.It's all just hands on experience during work.

I am a certified EASE and Smaart v8 user's and have license software in hand to work with which is one of my main task here.I also have a couple of equipments from NTI and Rational Acoustics for my work also.From my understanding of our current market here [SRS & PA SYSTEM] it's really a pathetic state of affairs i would say.

Not much people have any idea in regards of SPL or STIPA means.But i could not blame them as there is no specific guidelines in Malaysia or any specific laws governing on this.This is free for all market compared to other country's.Recent cases over the years of fire which cost life's happening in the country saddens me such as tahfiz school and the johor hospital recently.

As in regards of Voice Evacuation system standards Malaysia is governed by Uniform building By-Laws which have only this specified under Voice Communication System.

Clauses 239 – 241
Two voice communication systems to be provided [1] Bomba communications [2] pa system between control centre and public areas. Floor or zone of area over 929sqm of nett area to be provided with electrical isolation switches within staircases. Special visible fire alarm systems to be installed in addition to normal alarm for deaf persons or audible alarms undesirable.


Singapore - CP25
Australia - AS1670.4
Europe - EN60849

This is too simplified and to grey area of concern.There is just no monitoring in this area.No people would ask if the area SPL was ok or if STI Speech clarity is good.But anyway thats the state of affairs of our Voice Evacuation industry here.

But as for SRS is no much better house of wordship such as mosque has terrible speech clarity.One of the problems of course its due to architectural design of mosque and all or most of them are build without considering acoustic value.The another thing is of course sound.People tend to have this perception of more speaker more good mah idea.....they just shoved every speaker into every column available.No EASE simulation,No considering speaker types Wide of Line Array type.No wonder most mosque when you can just hear people complaint in regards of they cannot understand what the imam or bilal is preaching.

Seriously someone need to re-regulate this industry.

This post has been edited by sk_kenny_9242: Dec 14 2017, 02:51 PM