SoundRoom: Room Acoustics RT60

Note: You need a speaker to measure. The phone speaker works for mid and high frequencies; for bass (63–125 Hz) please use external speakers such as your hi-fi system or AV receiver.

SoundRoom measures your room's acoustics with just your phone and your speakers. The app plays a test signal, records how the room responds, and shows you how long the sound lingers and what you can do about it.

Great for home theaters, hi-fi listening rooms, home studios, rehearsal rooms and offices.

■ RT60 in 8 octave bands
• Reverberation time from 63 Hz to 8 kHz
• Compared with the target for your room type and volume
• Measurement confidence shown for each band
• Background noise per band, so you know how reliable the result is

■ Find standing waves
• Frequency response from 20 to 500 Hz
• Room modes (length, width, height) detected and rated
• Warning when the room shape puts you at risk of deep bass dips

■ Standing-wave 2D map
• See where the bass piles up in your room
• Drag speakers, subwoofers and your seat to try new positions

■ Concrete treatment advice
• Absorption area you need, in m²
• The best mix of materials to cover all frequency bands
• Suggestions by material type (bass traps, rock wool and glass wool boards, acoustic foam) with placement tips

■ EQ settings for your amp
• PEQ values (frequency, Q, gain) ready to enter into your AV receiver or DSP
• Export as CSV
• Export a correction filter as 32-bit float WAV (linear-phase FIR)

■ More features
• Waterfall view: see how each frequency dies away
• SPL meter
• Quick measurement without room setup
• Measurement history and side-by-side comparison
• PDF report to share
• Works with USB and external microphones

■ Privacy
• No ads, no tracking
• All data stays on your device

Accuracy depends on your microphone and speakers.