Embodiments of the present invention provide a voice filtering method and apparatus and electronic equipment. The securing element comprises a covering and a pyrotechnical propellant charge is arranged in the head part thereof, said propellant charge being adjacent to an adapter, and securing means or a stop for the first component are arranged on the rear part of the covering and a second component can be pushed onto the covering between the first component and the head part. Adaptation circuitry is connected to the linear equalizer and the variable gain amplifier.