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This paper presents a new encoding/decoding approach to brain–computer interface (BCI) based on chromatic transient visual evoked potential (CTVEP). The proposed CTVEP-based encoding/decoding approach is designed to provide a safer and more comfortable stimulation method than the conventional VEP-based stimulation methods for BCI without loss of efficiency. For this purpose, low-frequency isoluminant...
An Internet telephony gateway server is proposed to integrate the Internet into the public switched telephone network (PSTN) and allows speech communication to take place between users using conventional telephones. Each gateway is composed of a voice modem connected to the server computer and a set of server software. Audio signal is converted into digital form by the voice modem, then the digital...
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