Talking under water
ArticleCasio develops pocket-sized transceiver for scuba diving use: the Logosease.
The Logosease is a transceiver that allows users to have spoken conversations underwater, revolutionizing the diving experience by solving the problem of communication limited to written signs and basic hand signals. With the Logosease, which is small enough to fit into a pocket and attach to the strap of a diving mask, divers can converse normally with the scuba regulator in their mouths. Since a full-face mask or any other type of special equipment is unnecessary, the Logosease lets leisure divers converse with ease.
Main Features
- Wireless communications enabled by ultrasound and bone conduction technologies The Logosease employs an ultrasound range of 32 kilohertz to enable wireless communication between users within visual range underwater. Multiple divers can each wear a transceiver and enjoy conversing in a group. The microphone and speaker employ a bone conduction method, and the reception and transmission modes can be switched by lightly tapping the device once.
- Built-in digital speech conversion technology
The Logosease modulates garbled underwater speech and transmits it, making it easier to hear using digital speech conversion technology* jointly developed with Professor Tetsuo Kosaka of the Yamagata University Graduate School of Science and Engineering. This technology makes it easier to hear the voiced "n," "m," "b" and "p" consonants, which are difficult to pronounce when diving because the nose is blocked by the scuba mask and the air-supplying regulator is in the mouth.
- Compact size with waterproof performance up to 180 feet
Yamagata Casio has applied technologies accumulated through the production of Casio products to realize waterproof performance of up to 180 feet for this transceiver. This is more than sufficient for the basic performance needed for recreational diving, which is limited to a depth of 130 feet. Furthermore, the Logosease is compact and lightweight, measuring 3.50×1.61×1.76 inches and weighing 3.77 ounces, making it possible to attach to the strap of a diving mask.
* Underwater voiced speech varies depending on the person and/or surrounding conditions. Yamagata Casio does not guarantee that the Logosease will deliver audible and comprehensible underwater speech.
Source: Yamagata Casio Co., Ltd.
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