What the study did
Ravi Mehta and colleagues at the University of Illinois published the study in the Journal of Consumer Research in 2012. Participants did creative problem-solving tasks under different levels of background noise. The result was an inverted U.
| Noise level | Creative task result |
|---|---|
| About 50 dB (quiet) | Baseline |
| About 70 dB (moderate) | Better creative performance |
| About 85 dB (loud) | Worse, as processing was disrupted |
The researchers’ explanation: moderate noise is mildly distracting, which nudges people toward abstract thinking and helps creativity. Loud noise disrupts thinking altogether.
Match the noise to the task
| Task | Suits | Why |
|---|---|---|
| Brainstorming, outlining, planning | Moderate background noise | Closest to what the study tested |
| Memorizing, close reading, math | Quiet | Accuracy matters more |
| Routine work, tidying notes | Personal taste | Noise matters less |
One more catch: the study used steady background sound. Real cafes have neighbors talking, grinders and changing music. Intelligible speech is especially distracting when you are reading.
Check your actual seat
- A cafe you think is "about 70 dB" may be in the low 60s or close to 80. You will not know until you measure.
- If Max often jumps above 80, the seat regularly goes past "moderate".
- Phone readings are not A-weighted and not the study’s conditions, so read them as rough bands.
Measuring with the app
Sit down and measure for ten minutes
In Focus Noise Meter, 50 to 65 dB shows as Moderate (about cafe level) and 65 to 75 as Noisy. For idea work, aim for Moderate to low Noisy; for memorizing, Quiet or below.
Match good days to the log
Use the times and averages in Records to find the noise range on days when studying went well.
| App reading | Focus suitability | What the app says |
|---|---|---|
| Below 40 dB | Very quiet | Library-level silence |
| 40 to under 50 | Quiet | A quiet space that suits focus |
| 50 to under 65 | Moderate | About cafe level |
| 65 to under 75 | Noisy | Easy to lose focus |
| 75 and above | Very noisy | Consider moving |
FAQ
Does playing cafe sounds through earbuds work the same?
The study played sound through speakers. With earbuds the sound goes straight into your ears, so keep the volume low. See safe earphone volume.
The library is so silent I cannot focus.
That happens. Look for a seat with steady ventilation noise, as in finding the quietest seat.
Focus Noise Meter - dB Sound Level
It never records audio, only calculates dB levels, and your history stays on your phone. Free on Android.