A headset system comprising: a headset comprising: an outer microphone configured to receive environmental sound from an outside environment, and to convert the environmental sound to a first electrical signal, an inner microphone configured to receive spoken sound from a human voice present in front of an ear drum, and to convert the spoken sound to a second electrical signal, and a speaker configured to transmit sound; a wire system coupled to the headset and comprising a wire; and a control unit coupled to the wire system and configured to: receive the first electrical signal, receive the second electrical signal, process the first electrical signal and the second electrical signal, determine that the first electrical signal, the second electrical signal, or a combination of the first electrical signal and the second electrical signal is mixed with a spurious signal, wherein the spurious signal is a non-aural signal that occurs as a result of a failure, and detect the failure of the wire system based on the determining, characterized in that to process the first and second electrical signals the control unit is configured to: determine a first peak value from the first electrical signal, determine a second peak value from the second electrical signal, and perform a comparison of the first peak value and the second peak value, wherein the determination that the first electrical signal, the second electrical signal, or the combination of the first electrical signal and the second electrical signal is mixed with a spurious signal is based on the comparison. a headset comprising: an outer microphone configured to receive environmental sound from an outside environment, and to convert the environmental sound to a first electrical signal, an inner microphone configured to receive spoken sound from a human voice present in front of an ear drum, and to convert the spoken sound to a second electrical signal, and a speaker configured to transmit sound; an outer microphone configured to receive environmental sound from an outside environment, and to convert the environmental sound to a first electrical signal, an inner microphone configured to receive spoken sound from a human voice present in front of an ear drum, and to convert the spoken sound to a second electrical signal, and a speaker configured to transmit sound; a wire system coupled to the headset and comprising a wire; and a control unit coupled to the wire system and configured to: receive the first electrical signal, receive the second electrical signal, process the first electrical signal and the second electrical signal, determine that the first electrical signal, the second electrical signal, or a combination of the first electrical signal and the second electrical signal is mixed with a spurious signal, wherein the spurious signal is a non-aural signal that occurs as a result of a failure, and detect the failure of the wire system based on the determining, receive the first electrical signal, receive the second electrical signal, process the first electrical signal and the second electrical signal, determine that the first electrical signal, the second electrical signal, or a combination of the first electrical signal and the second electrical signal is mixed with a spurious signal, wherein the spurious signal is a non-aural signal that occurs as a result of a failure, and detect the failure of the wire system based on the determining, characterized in that to process the first and second electrical signals the control unit is configured to: determine a first peak value from the first electrical signal, determine a second peak value from the second electrical signal, and perform a comparison of the first peak value and the second peak value, wherein the determination that the first electrical signal, the second electrical signal, or the combination of the first electrical signal and the second electrical signal is mixed with a spurious signal is based on the comparison.