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Qualcomm code-excited linear prediction

Known as: Qualcomm PureVoice, 13k audio, 13k vocoder 
Qualcomm code-excited linear prediction (QCELP), also known as Qualcomm PureVoice, is a speech codec developed in 1994 by Qualcomm to increase the… 
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Papers overview

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2005
2005
We propose a speech watermarking algorithm based on the modification of the pitch (fundamental frequency) and duration of the… 
2001
2001
In this paper, we propose acombined variable-rate code-excited linearly predictive (QCELP)speech coding and unequal error… 
1997
1997
In this paper, we present a design of modem and vocoder digital signal processor (DSP) chips for CDMA mobile station. The modem… 
1997
1997
Code-excited linear prediction (CELP) is the predominant methodology for communications quality speech coding below 8 kbps, and… 
1995
1995
The goal of this study is to develop a robust and high-quality speech coder for wireless communication. The proposed coder is a… 
1995
1995
A new set of equations relating the coefficients of a finite-impulse-response (FIR) system and the third- and fourth-order… 
1994
1994
This paper describes a full-custom ASIC implementation of the QCELP voice compression algorithm. Applications for the ASIC are… 
1994
1994
A variable bit-rate speech coder intended for digital cellular applications is described. A voice activity detection algorithm is… 
Highly Cited
1993
Highly Cited
1993
Digital cellular telephone systems require efficient encoding of speech to achieve capacity improvements required of the next… 
1993
1993
Digital cellular telephone systems require efficient encoding of speech to achieve capacity improvements required of the next…