Developing a chip that can support phone conversations with just an earphone.
Earphone Mic Solutions | Under development |
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What is an earphone mic?
SANYO is developing a chip that can support phone conversations
with just an earphone.
Conversation is possible without taking off your earphones.
●STFD (single transduce full duplex) technology makes a separate microphone unnecessary!
Increased flexibility in end product design
●Phone conversions are possible even in crowds or noisy environments
Since the sound is picked up directly in the ear, wind and other sounds can be reduced.
●Better audio quality than bone conduction microphones
Since an even clearer voice sound is possible, it is easy to identify the speaker.
●New applications in various other wireless markets
Phone conversations are possible without removing one’s earphones when listening to music.
Single Transducer Full Duplex
S.T.F.D.
Tympanic
The headphone diaphragm catches the weak audio signal emitted from
the tympanic
Wind sounds
Higher audio quality
Bone conduction Earphone mic | Noise is reduced |
microphones |
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Hands free
There are also new applications
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| Resistant to noise | |||
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| Development roadmap |
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| First generation |
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| Second generation |
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Evaluation board verification | For business equipment |
| For portable equipment | |||||
For PC peripherals |
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STFD function confirmation |
| For wireless equipment | ||||||
For portable accessories |
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Diaphragm
Tympanic
Vocalization | Vibrations in the air |
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Transmission
Reception | Vibrations in the air |
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Simultaneous transmission and reception at a single diaphragm
To the circuit
Signal conversion using a DSP.
Signal transmission while maintaining clarity.
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| Lower power consumption | |
Integration |
| Higher functionality | ||
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| Added functionality |
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| Functions |
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| • Noise canceler | |
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| • STFD |
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| • Speach speed conversion | |
STDF evaluation board | • Volume |
| • Hands free | |
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2005 |
| 2006 | 2007 | |
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