Abstract

Bluetooth is an emerging technology for short-range wireless communication. It is designed to transfer data over asynchronous connectionless (ACL) links and voice over synchronous connection-oriented (SCO) links. SCO packets are sent at regular intervals and are never retransmitted, while ACL packets are retransmitted in case of error. In this paper we have investigated speech recognition performance for voice transferred over ACL and SCO links at various channel qualities. Our experiments have shown that channel quality has severe impact on speech recognition performance for voice earned over SCO. This justifies the use of ACL links for voice transmissions in speech recognition applications.

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