01The count
AVIXA — the Audiovisual and Integrated Experience Association — is the global standards body for commercial AV. It runs two advanced certifications: CTS-D for design, CTS-I for installation. Both are earned by individuals, not by companies. They are graded examinations with pass marks, not workshops that hand out a certificate at the end. They must be renewed every three years through verified continuing-education hours. If they are not kept up, they lapse.
In India, the number of professionals who hold either of these credentials is in the low double digits. On a conservative count, somewhere between twelve and twenty-four. Most of that small group is employed by equipment manufacturers — audio brands, display brands, control-system brands. The reason is straightforward. Certified design expertise is scarce, and manufacturers need it to write their own products credibly into tenders and competitive bids.
The result follows from this. When an Indian institution asks for independent design advice, most of the people qualified to give it are paid by a manufacturer whose product would benefit from a particular answer. The number of CTS-D and CTS-I professionals who sit outside that commercial setup — working for a system integrator whose loyalty is to the room rather than to a brand — is small. Two or three, at the time of writing.
EAPL holds both certifications at the leadership level. It is one of those two or three.
02What CTS-D examines
CTS-D is a three-hour written examination, taken in person at an approved test centre. It tests whether the candidate can design an AV system that will actually work in the room the institution is paying for. The test is whether the design holds up on calculation, before the room is built — not on hope, after.
The examined syllabus is a working picture of what serious AV design looks like. It covers, among other areas:
Sound
- Speech intelligibility Will the person at the back of the room hear the person at the podium? STI — the Speech Transmission Index — is the standard measure: a number between 0.0 and 1.0. A classroom needs to clear 0.60. A briefing room needs more. A design that carries no STI prediction is a design that has not asked the question. STI · IEC 60268-16
- Audio coverage uniformity Is every seat in the room hearing the same volume? A coverage map predicts the sound pressure at each chair. The aim is uniformity within about 3 decibels front to back. A room where the front row is 6 decibels louder than the back is not an audience — it is discomfort in the front, lost signal at the back. ANSI/AVIXA A102.01
- Room acoustics How long does sound take to fade in the room? How much background noise is the air-conditioning adding? Two measures answer this — RT60 for reverberation, NC for HVAC noise. No microphone or speaker can fix a room that echoes back at itself. The acoustic plan has to come first, otherwise the AV specification is fighting the room it sits in. ISO 3382 · ANSI S12.2
Vision
- Display sizing Can the person in the last row read the smallest item on screen? AVIXA’s DISCAS standard takes the farthest seat and the smallest required element — body copy, a row in a data table, fine video detail — and works back to the screen size you actually need. A 55-inch screen in a sixty-seat auditorium is a specification mistake, not a saving. DISCAS · ANSI/AVIXA V202.01
- Sight-line geometry Does every seat have an unobstructed view of the screen and the speaker? Sight-line analysis is geometry — eye height, screen height, room rake, the column behind row five — worked out before the chairs are bolted to the floor. Worked out after, it is no longer geometry; it is improvisation. ANSI/AVIXA design practice
- Ambient light against screen contrast Will the screen still be readable when the room lights are on? Display brightness is calculated against ambient illuminance — a panel that looks bright in a showroom can wash out under a 500-lux ceiling. Lighting placement, daylight handling, and dimming-zone design determine whether the screen is a screen or a problem. IES illuminance recommendations
Signal & infrastructure
- Distribution-backbone bandwidth Will the cabling, switching and control infrastructure carry every video source at full quality, all at once? A 4K source feeding multiple zones, with switching and live capture happening simultaneously, places real demands on the backbone. The math has to be done in advance. The other moment you find out the answer is during a live event — by which time fixing it is no longer an option. ANSI/AVIXA 2M
- Control and network architecture How does the room get controlled — and what happens when the network drops? AV-over-IP designs depend on bandwidth segmentation, QoS provisioning, and redundancy paths the IT department has agreed to support. Without that agreement at design stage, the system works on commissioning day and falters quietly when the network is reconfigured six months later. ANSI/AVIXA 2M
- Rack thermal load and power How much heat does the equipment rack actually produce, and is the room cooling specified to take it? An installed rack is a small server room. Calculated BTU output, isolated grounding, UPS sizing against runtime, and pathway separation between Class 1 and Class 2 cabling are the difference between equipment that lasts ten years and equipment that fails in three. NEC · IS 732 · manufacturer thermal data
Verification & accessibility
- Performance verification at commissioning At commissioning, does the system actually deliver the numbers the design predicted? STI measured against STI predicted. Coverage measured against coverage predicted. Display brightness measured against ambient lux. Verification at handover is what makes a design accountable to its own claims. ANSI/AVIXA 10:2013
- Assistive listening Can someone with hearing aids hear the room without removing them? Induction loops, FM systems, and infrared assistive listening are not afterthoughts in a serious design — they are infrastructure. Loop coverage, signal quality, and the placement that makes them work without making them visible are part of the specification, not added afterwards. IEC 60118-4
Each domain produces numbers. Each number rests on assumptions a qualified reviewer can audit. That is what design rigour looks like. It is open. It can be inspected. It can be challenged. A specification that cannot survive that kind of examination was assembled, not designed.
03What CTS-I examines
A design that cannot actually be installed is just paper. CTS-I is the certification for installation discipline — the work of turning the design into a working room.
It tests the questions that decide whether a system survives its first year and the next decade. Where does each piece of equipment sit in the rack, given how much heat it gives off? Are the cables run in a way the next technician can follow without a treasure map? Are the speakers hung against properly calculated weight and movement loads? At commissioning, does the installed system measure up to what the design predicted? Is the as-built documentation detailed enough that someone replacing a unit five or ten years later does not have to start with a fresh survey?
An integrator that holds CTS-D for design but not CTS-I for installation is common enough. A practice that holds both, kept current to the global standard and renewed on the three-year cycle AVIXA requires, is uncommon. Holding both matters because the pairing closes a loop. What was designed is what gets installed. What gets installed is what gets documented.
04Why independence matters
Look at how AV specifications are usually written in India today. An officer wants a conference room, a classroom, or a command centre. He invites two or three vendors to submit a design. Each design arrives reading as neutral engineering advice. On a closer read, each design specifies the products its author’s employer happens to make, distribute, or is authorised to sell. None of the three vendors is doing anything dishonest. None of them is independent either.
This is not bad behaviour. It is just how the market is built. Most design expertise in India sits inside the companies that sell the equipment. The question is not whether anyone is being dishonest. The question is what they are paid to recommend. A designer who works for Brand A will sincerely come to believe Brand A’s products are the right answer — because his job and his salary have shaped that belief over years. He cannot easily think his way out of it. The only way out of the pattern is to find design counsel that sits outside the manufacturer side of the industry entirely. In the Indian market, the count of qualified candidates for that role is the count given earlier on this page.
When EAPL recommends one product over another — audio, video, or control — there is no brand-side payment, distributor margin, or sales target that improves if you say yes. The designer’s salary does not move with the recommendation. The recommendation can still be wrong; any engineering recommendation can be. But it cannot be motivated by anything other than the room and the brief.
For an institution with a paper trail, a noting sheet to write and a committee to face, that is the difference between a specification you can defend on review and one you cannot.
05The person behind the credential
The certificate numbers above can be checked directly on the AVIXA CTS Registry by anyone who wishes to. Framed copies are on the wall at our Delhi office. We do not treat these certifications as a marketing line. They are the foundation on which the practice operates — the reason the BOQ follows the design, instead of the other way round.
06What this means on your project
Every EAPL project starts with a design document. That document is the reference point for everything that follows. The Bill of Quantities is built from the design, not assembled separately. If the design asks for a capability, the BOQ is built to deliver it. If the BOQ carries an item, it is there because the design called for it.
Commissioning is the moment the design meets the actual room. A serious specification predicts what commissioning will measure, and stands up to that check. A specification that cannot is a specification that was not engineered, only listed.
Independent certified design is not a slogan. It is a real scarcity in the Indian market. It is also the discipline behind every room EAPL designs. EAPL holds these certifications because the business was built to hold them — and because the institutions we serve have every right to expect them in a vendor.