Pitch Controlled Variable Bitrate CELP Speech Coding
نویسندگان
چکیده
In the past decade Code Excited Linear Prediction (CELP) has become Ihe dominan~ speech coding algorifhm for bit rafes between 4 kbps and 16kbps. Traditiowlly, CELP type algorithms produce a fixed bit-rafe. However, a fixed bit-rate is nof a requirement anymore for modern telecommunication and computer networks as well as for voice storage applications. The variable bifrate CELP coder presented in this paper features, besides the usml classification and bit allocation schemes, a~itiona[ly a variable analysis frame size, which is adapted according to the pitch of the speech signal.
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تاریخ انتشار 1998