Patent ID: 7574917

Claim:
A method for measuring an acoustic attenuation obtained by a hearing protection device worn by a user, comprising: positioning said hearing protection device at an ear of said user in an attenuation position, said hearing protection device comprising a microphone oriented towards an ear canal of said user for capturing sound in said user's ear canal; positioning a cup-like measuring device at said user's ear in such a manner that a closed space surrounding said hearing protection device positioned in said attenuation position is created by said measuring device, said measuring device comprising a loudspeaker oriented towards said user's ear for providing sound to said closed space and a microphone in said closed space at a distance from said hearing protection device and oriented towards said user's ear for capturing audio signals from sound in said closed space; providing a test signal via said loudspeaker, capturing audio signals representative of a level of said test signal in said closed space by said microphone of said measuring device and capturing audio signals representative of a level of said test signal in said user's ear canal by said microphone of said hearing protection device; processing said audio signals captured by said microphone of said measuring device and said audio signals captured by said microphone of said hearing protection device and estimating an attenuation provided by said hearing protection device from said processed audio signals.