Simple tone generator 1.15 [免费版]

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Use this application to generate tone from 1 to 20000 Hz. Also use subwoofer test to check your subwoofer.

Wake lock	Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Internet	Allows to access internet network.
Access network state	Allows to access information about networks.
com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE	App customer permission.
com.google.android.c2dm.permission.RECEIVE	App customer permission.

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