The Problem

Using regular earbuds has a major downside: they are not working properly in noise places because
the microphone is placed outside, and the distance between the mic and the user’s mouth is too far.
So, the mic captures all the ambient noise when you begin talking in noise places.

InnerMicTM Technology

When you speak, the voice not only goes out of your mouth but also travels internally through the Eustachian Tube.
Using this concept, we placed a microphone inside the earbuds to pick up the voice. The outer mic is automatically turned off to block out the ambient noise as soon as the outer mic detects the presence of background noise while talking on the phone or listening to music. Thanks to this technology, it is possible for us to have a clear phone call in a really noisy environment.

When a microphone is placed in front of the speaker, feedback occurs and howling noises are made.
That is why there is hardly any company that was successful coming up with inner-mic earphones. However, we made this possible through our patent-protected howling & echo removing algorithm.


In the circumstance where people have to control robots while others are talking to each other, or where workers communicate with each other and control IoT devices in a smart factory, the surrounding noises make it difficult for us to deliver a clear message and control the devices with our voice. However, applying Inner-mic technology to AI earbuds allows us to solve these problems. In addition, we can use our product for listening to music and making a clear phone call even in the extremely noisy wind while riding a motorcycle.

VoiceRecoveryTM Technology

Using InnerMicTM alone or regular earbuds has one significant problem: The user’s voice sometimes gets distorted. This problem occurs when the voice travels through Eustachian Tube projected up to 2 kHz in frequency. Although people can still hear you, the voice comes out muffled and distorted. To solve this problem, Orfeo SoundWorks has finished developing VoiceRecoveryTM Technology. Using this technology, we adjust the bandwidth of voice frequency, so this technology helps maintain our original voices when we talk through our earbuds.

SoundThruTM Technology

ACCUDIO Button has another microphone outside of the earbuds.
SoundThruTM Technology serves to utilize this outer-mic to let surrounding sounds to come in when it is necessary.
For example, crossing the street with earbuds can be quite dangerous. A Car or bike might be coming and honking at you but you wouldn’t be able to hear it.
SoundThruTM allows you to turn on the outer-mic via mobile application called ACCUDIO and you can hear the surrounding sound if it’s necessary.
Remember that SoundThruTM Technology is supposed to enhance your safety while listening to music. However It does not work when your are on phone calls.