What is it? And a WARNING!

Earful is an app designed to measure and evaluate the lower threshold of hearing across a frequency spectrum. It is designed to run on Windows and support ASIO, WASAPI, and Direct Sound audio devices. Use with headphones is recommended for greater accuracy and noise elimination.

In addition, with version .10, Earful now supports two other types of tests:

• Equal-loudness testing using the same device and 1kHz reference tone
• Two devices equal-loudness testing, using a reference device, such as speakers, and a test devices, such as headphones

The app is free to use, but to use it, you must agree to do so AT YOUR OWN RISK ONLY. Make sure that the volume settings are set such that any loud sounds played through your system will not damage your equipment or your hearing! This is important. Set the frequency range in Earful correctly, and also specify the maximum volume setting at a low number to avoid surprises (default is -20dBFS).

Features:

• Pick your own frequency range for the test
• Specify any number of logarithmically spread points to test along the frequency axis
• Compare your results to others, compare to your older tests to check for changes, or compare to any of the industry standard, published curves
• Test with a single tone, a warble tone, or a band-limited white noise
• Using a simple text format supported by REW, so the result can be loaded into that tool directly
• Supports ASIO, WASAPI exclusive/shared, and Direct Sound device drivers
• Display in dB SPL or in db FS with configurable dBSPL calibration
• Apply a flat calibration curve to account for variations in headphones or speakers
• Equal-loudness testing using a 1kHz reference or a separate audio device

distortaudio.org/earful

Use is entirely at your own risk.