Using pink noise for speaker level checks
A practical workflow for using pink noise with a sound meter while avoiding claims that an iPhone can guarantee room SPL.
Before you measure
Keep system volume fixed.
Write down distance and room state.
Use the same meter weighting.
Treat results as practical comparisons.
Pink noise is a common starting point when people want to compare speaker levels because it spreads energy across the spectrum in a way that is useful for listening rooms and meter workflows.
SignalProof can provide the repeatable noise source. Your meter provides the reading.
What to keep consistent
- the phone or speaker playing the signal
- system volume
- distance from source to meter
- meter weighting and time setting
- room state, including open doors, windows, curtains, and people in the space
Changing any of these can change the result.
What to compare
For a home theater or soundbar check, play pink noise and compare one speaker or channel position at a time. The practical goal is usually consistency between readings, not proof of an absolute calibrated output level.
For a window or door comparison, play the same noise from the same position, then measure the other side before and after the change.
What not to claim
Do not treat the result as a certified building acoustic rating, professional calibration certificate, or hearing safety diagnosis. SignalProof helps make the source repeatable so the measurement workflow has less guesswork.