Abstract: A headset communication system with improved functionality. The headset communication system may include hear-through limiter functionality. The headset communication system may include failsafe functionality. The headset communication system may include multichannel, mixing, passive push-to-talk functionality. The headset communication system may include near field magnetic induction functionality.

Abstract: The invention is directed to synthesizing a personalized audio equalization filter based on an individual's hearing profile when listening to audio signals using a preferred electronic means of transduction and production of the audio signals through headphones, earphones, or loudspeakers and is presented in two steps. In the first step, the deviation of the listener's hearing profile, when the preferred listening device is donned, is measured and recorded relative to predetermined equal-loudness contours (e.g., ISO standard equal-loudness contours). The hearing profile is used to compute an equalization filter such that when the audio signal to be reproduced is played through the filter, the equal-loudness contour for a specified phon level is restored. Thus, the invention compensates for deviations of the user's listening device, the user's own hearing profile from a standard hearing profile that represents natural hearing, and other factors.

Abstract: The invention is directed to synthesizing a personalized audio equalization filter based on an individual's hearing profile when listening to audio signals using a preferred electronic means of transduction and production of the audio signals through headphones, earphones, or loudspeakers and is presented in two steps. In the first step, the deviation of the listener's hearing profile, when the preferred listening device is donned, is measured and recorded relative to predetermined equal-loudness contours (e.g., ISO standard equal-loudness contours). The hearing profile is used to compute an equalization filter such that when the audio signal to be reproduced is played through the filter, the equal-loudness contour for a specified phon level is restored. Thus, the invention compensates for deviations of the user's listening device, the user's own hearing profile from a standard hearing profile that represents natural hearing, and other factors.

Abstract: A noise canceling and communication system includes an in-ear device adapted to fit in the ear canal of a device user. A passive noise reduction element reduces external noise entering the ear canal. An external microphone senses an external acoustic signal outside the ear canal. An internal microphone senses an internal acoustic signal proximal to the tympanic membrane. One or more internal sound generators produce a noise cancellation signal and an acoustic communication signal, both directed towards the tympanic membrane. A probe tube shapes an acoustic response between the internal sound generator and the internal microphone to be relatively constant over a wide audio frequency band. An electronics module is located externally of the ear canal and in communication with the in-ear device for processing the microphone signals using a hybrid feed forward and feedback active noise reduction algorithm to produce the noise cancellation signal.

Abstract: A noise canceling and communication system is described. An in-ear device is adapted to fit in the ear canal of a device user. A passive noise reduction element reduces external noise entering the ear canal. An external microphone senses an external acoustic signal outside the ear canal to produce a representative external microphone signal. An internal microphone senses an internal acoustic signal proximal to the tympanic membrane to produce a representative internal microphone signal. One or more internal sound generators produce a noise cancellation signal and an acoustic communication signal, both directed towards the tympanic membrane. A probe tube shapes an acoustic response between the internal sound generator and the internal microphone to be relatively constant over a wide audio frequency band.