Some of us use apps (FFT, ClapIR, etc.) for measurements and evaluations. I realize not the best but will give us corse order of magnitude feedback.
I would like to see some comparisons:
REW vs lab grade equipment vs FFT Spectrum app for example.
Accuracy of an iPhone (on-board mic and signal processing)
There is very little out there. When I've compared them against FLAC and CD test tones they seem pretty good?
Some examples
https://pubmed.ncbi.nlm.nih.gov/32108336/
Results: Nine apps were tested in total, with four out of nine providing a goodness-of-fit coefficient (R2 value) over 0.9. The most effective app was found to be the NIOSH (National Institute for Occupational Safety and Health) Sound Level Meter (EA LAB, Slovenia) with an R2 of 0.97.
https://signalessence.com/can-you-u...for-acoustic-testing-and-accurate-recordings/
My iPhone X falls off above 12 kHz and below 50 Hz. So if using pink noise I know only use valid 60-10k for example.
We can use this info. For example if we measure 14 kHz at - 3 dB (relative) we know it's the mic, so we don't over boost 3
I would like to see some comparisons:
REW vs lab grade equipment vs FFT Spectrum app for example.
Accuracy of an iPhone (on-board mic and signal processing)
There is very little out there. When I've compared them against FLAC and CD test tones they seem pretty good?
Some examples
https://pubmed.ncbi.nlm.nih.gov/32108336/
Results: Nine apps were tested in total, with four out of nine providing a goodness-of-fit coefficient (R2 value) over 0.9. The most effective app was found to be the NIOSH (National Institute for Occupational Safety and Health) Sound Level Meter (EA LAB, Slovenia) with an R2 of 0.97.
https://signalessence.com/can-you-u...for-acoustic-testing-and-accurate-recordings/
My iPhone X falls off above 12 kHz and below 50 Hz. So if using pink noise I know only use valid 60-10k for example.
We can use this info. For example if we measure 14 kHz at - 3 dB (relative) we know it's the mic, so we don't over boost 3
