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US 5,325,872 AGranted
Tinnitus masker
AssigneeTopholm & Westermann ApS
InventorSoren E. Westermann
Life of this patent
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Abstract
The invention relates to a tinnitus masker with one or more signal generators, a controllable amplifier (2), one or two electroacoustic transducers (3) for conversion of electrical signals into acoustic signals and a voltage source, whereby at least one of the signal generators (1) generates a continuously repeated, sinusoidal pure tone signal which slowly moves through the audio frequency range and whose cycle duration can be adjusted between 0.1 and 1000 seconds.
Claims13
In a tinnitus masker for inhibiting tinnitus comprising:
- at least one signal generator (1), a controllable amplifier (2) connected to said at least one signal generator, at least one electroacoustic transducer (3) connected to said controllable amplifier for conversion of electrical signals to acoustic signals, and a voltage source, the improvement wherein said at least one signal generator (1) comprises means for generating a continuously repeated, sinusoidal pure tone signal which continuously and slowly moves through an audio frequency range in a cyclic manner to remove tinnitus for a period of time.
In a tinnitus masker for inhibiting tinnitus comprising:
- at least one signal generator (1), a controllable amplifier (2) connected to said at least one signal generator, at least one electroacoustic transducer (3) connected to said controllable amplifier for conversion of electrical signals to acoustic signals, and a voltage source, the improvement wherein said at least one signal generator (1) comprises means for generating a continuously repeated, sinusoidal pure tone signal which continuously and slowly moves through an audio frequency range in a cyclic manner to remove tinnitus for a period of time, and wherein said controllable amplifier includes an adjustable output amplifier (13) connected to said at least one electroacoustic transducer, and wherein said at least one signal generator (1) comprises a first voltage-controlled oscillator (5) for generation of the continuously repeated, sinusoidal pure tone signal which continuously and slowly moves through the audio frequency range, means for applying an output signal of said first voltage-controlled oscillator via a first potentiometer, together with an output signal of a second potentiometer (7), to a second voltage-controlled oscillator (10) via a summing amplifier (8a, 8b, 9), an output signal of said second voltage-controlled oscillator (10) being supplied to said variable output amplifier (13) and thus to said at least one transducer (3).
Dependencies are inferred from the claim text.