When you speak with your ears plugged you can still hear your voice.
That’s because voice not only goes out of your mouth but also travels internally through Eustachian Tube.
Using this idea, we placed a microphone inside the earphones to catch the voice traveling through Eustachian Tube.
Then, outside noises are physically blocked off (due to the physical shape of in-ear earphones) and only human voice goes through the mic.
Using InnerMicTM alone or even regular earphones have one significant problem: User’s voice gets thickened or distorted.
This problem occurs because voice that travels through Eustachian Tube projects up to 2 kHz in frequency.
Although people can still hear you, voice comes out muffled. To solve this problem, Orfeo SoundWorks his finished developing VoiceRecoveryTM Technology.
Using this technology we extend the bandwidth of voice frequency.
Furthermore, VoiceRecoveryTM touches upon the input voice so that it comes out as your original voice.