SPL Meter is a professional-grade sound level meter, also known as a decibel or dB meter, for your iPhone or iPod touch. Modeled after a traditional analog SPL meter, we have faithfully reproduced all the characteristics and qualities found in those meters, including the ballistics, ranges, filters, and decay rates. But don't compare us to a Radio Shack meter, ours is much more accurate. SPL meter is included in our premier audio analysis App, AudioTools. Consider buying AudioTools rather than the standalone meter.
- Filters ANSI A and C weighting filters are provided, Just flip the switch to select the filter
- Decay flip the switch to choose ANSI fast or slow
- Slow will give you a better average reading, while Fast will follow peaks better
- Select 40dB to 120dB in 9 ranges, whatever range is selected, this is the value at the 0dB mark on the meter
- Most iOS devices allow us to control the input gain of the microphone
- With the internal iOS microphones, this will cover a range of approximately 30 - 100 dBA SPL
- This will extend the range to 50 - 120 dBA SPL
