Before & After Acoustic Treatment
Measured, Not Assumed
The following measurements were taken in the same room, same speaker position, and same measurement position, before and after applying proper acoustic treatment.
Understanding the Measurement Shown (RT60 & Decay)
Too long decay → muddy sound, poor dialogue clarity
Too short decay → dry, lifeless sound
Uneven decay across frequencies → tonal imbalance and listening fatigue
A well-treated room shows controlled and consistent decay across frequencies.
BEFORE Acoustic Treatment
(Untreated / Poorly Controlled Room)
What the Measurement Shows
RT60 ≈ 0.64 seconds
Excessively long decay, especially in low and mid frequencies
Energy persists for a long time after the sound stops
Uneven decay behaviour across the spectrum
What This Means Audibly
Bass sounds slow, boomy, and overlapping
Dialogue lacks clarity
Sound feels loud but not controlled
Effects and music smear together
Listening fatigue over longer sessions
In this condition, even the best speakers cannot perform correctly, because the room dominates the sound.
AFTER Acoustic Treatment
(Properly Designed & Treated Room)
What the Measurement Shows
RT60 reduced to ≈ 0.30 seconds
Faster and more uniform decay across frequencies
Excess energy is absorbed and controlled
Clean, predictable acoustic behaviour
What This Means Audibly
Bass becomes tight and articulate
Dialogue is clearer and easier to understand
Sound stops when it should stop
Better separation between effects, music, and vocals
Comfortable listening even at higher volumes
This is the foundation required for reference-level sound reproduction.
The Real Takeaway
Acoustic treatment alone achieved:
~50% reduction in decay time
Massive improvement in clarity and control
A room that now supports high-performance audio
No DSP, no EQ, no calibration can replace this step.
Why Acoustic Treatment Comes First
Acoustic treatment:
Controls reflections
Reduces resonances
Manages decay time
Makes the room predictable
Only after this stage does any electronic processing make sense.
Final Words
These measurements clearly demonstrate that:
Great sound does not start with equipment — it starts with the room.
At Great Sound Acoustics, our focus is on measurable acoustic performance, not assumptions or cosmetic solutions.
In this Project We completely used GreatSound Acoustics and Project done by SMART Home Cinema, Madurai, Tamil Nadu. INDIA.
