Petralex

Petralex is an Android application to amplify the regular volume of your smartphone. It is oriented to people with certain hearing problems.

Customization

At the first launch the program will offer to test the auditory perception. The tests take about two minutes and allow you to customize the application's mode of operation to the user's hearing. For the test it is necessary to use headphones that will be used in the future. The test is a sequential set of signals with different intensities, the upper limit is 35 decibels. Several passes with different signal frequencies are used. This allows you to form an individual profile to select a comfortable mode of operation.

Application

The main purpose of the program is to increase the volume level. It is possible to adjust the left and right channels separately, which allows you to take into account all the peculiarities of a person. There is a built-in mode of suppressing external noise. The built-in algorithm allows you to amplify only quiet sounds, there is also protection from sudden bursts of signal in the headphones. A separate option allows you to customize the low frequencies. You can activate the suppression of your own voice, which is useful when communicating through a headset. It is worth considering that some of the tools and functions are available only in the paid version of the program. To switch to it, you need to activate a subscription beforehand. If you encounter difficulties in the process of customization, you can refer to the help section. All available options and features of the application are described. There is a selection of recommendations and a list of possible errors.

Features

• the utility allows you to increase the volume level;
• pre-test mode;
• you can separately customize channels;
• support for wireless headsets;
• noise reduction function;
• some features are available after subscribing.