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 JSIP  Vol.3 No.1 , February 2012
Efficient Hardware/Software Implementation of LPC Algorithm in Speech Coding Applications
Abstract: The LPC “Linear Predictive Coding” algorithm is a widely used technique for voice coder. In this paper we present different implementations of the LPC algorithm used in the majority of voice decoding standard. The windowing/autocorrelation bloc is implemented by three different versions on an FPGA Spartan 3. Allowing the possibility to integrate a Microblaze processor core a first solution consists of a pure software implementation of the LPC using this core RISC processor. Second solution is a pure hardware architecture implemented using VHDL based methodology starting from description until integration. Finally, the autocorrelation core is then proposed to be implemented using hardware/software (HW/SW) architecture with the existing processor. Each architecture performances are compared for different data lengths.
Cite this paper: M. Atri, F. Sayadi, W. Elhamzi and R. Tourki, "Efficient Hardware/Software Implementation of LPC Algorithm in Speech Coding Applications," Journal of Signal and Information Processing, Vol. 3 No. 1, 2012, pp. 122-129. doi: 10.4236/jsip.2012.31016.
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