HillPoint Insight

Acoustic Insights

Practical notes on the acoustic problems that show up in offices, meeting rooms, classrooms, and commercial interiors.

Infographic showing how ceiling reflections spread sound across an entire office floor compared to contained wall reflections, with ceiling treatment options including baffles, clouds, and performance tiles

Office Acoustics

Why ceiling acoustic treatment matters more than wall panels

Everyone treats the walls. Almost everyone forgets the ceiling. That's backwards, because the ceiling is often the largest uninterrupted hard surface in the room.

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Infographic explaining NRC ratings, showing frequency range limitations, panel thickness impact on absorption, flush mount vs air gap mounting comparison, and material NRC comparison chart from marble to acoustic panels

Acoustic Basics

NRC ratings: what the number actually means (and what it hides)

NRC tells you what percentage of sound a material absorbs, but the number hides frequency, thickness, and mounting details that matter in real rooms.

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Infographic comparing treated vs untreated conference rooms for video calls, showing RT60 values, Speech Transmission Index scale, microphone reflection diagram, and recommended treatment placement

Meeting Rooms

Why your video calls sound terrible (it's not your platform, it's your room)

Most bad video-call audio is not the platform or the microphone. It is the conference room sending reflections into the mic.

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Infographic showing sound reflection patterns in glass conference rooms, NRC comparison of glass, concrete, drywall and acoustic panels, and balanced design approach with ceiling absorption

Office Acoustics

The glass wall trap: beautiful design, terrible acoustics

Glass makes offices look open and modern, but it reflects almost all sound and can turn meeting rooms into loudspeakers for the whole floor.

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Infographic showing focused brain vs distracted brain in open offices, conversation bandwidth of 1.6, decibel scale from 40 dB to 70 dB, and acoustic treatment strategies for the 3-6 foot speech zone

Office Acoustics

Open office acoustics: why one conversation costs you 66% of your focus

Open office speech is uniquely distracting because the brain is wired to process language, even when employees are trying not to listen.

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Infographic showing RT60 targets for different room types from meeting rooms at 0.4 seconds to concert halls at 2.2 seconds, with Sabine formula, WELL and ANSI standards marked, and speech vs music reverb comparison

Acoustic Basics

Reverberation time (RT60): the number that defines how your room sounds

RT60 measures how long sound lingers in a room, and it explains why a boardroom, classroom, office, and concert hall need very different acoustic targets.

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