Examples of 'adaptive codebook' in a sentence
Meaning of "adaptive codebook"
adaptive codebook - In the context of technology or telecommunications, an adaptive codebook refers to a tool or system that adjusts or modifies a set of codes for optimal performance or efficiency
How to use "adaptive codebook" in a sentence
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adaptive codebook
An adaptive codebook implements the pitch synthesis.
The excitation signal is accumulated in a buffer called an adaptive codebook.
The adaptive codebook gain is delayed for one subframe.
They will also be correlated to gains in the adaptive codebook.
The entries in the adaptive codebook consist of delayed versions of the excitation.
It is the same gain as used during concealment of the adaptive codebook.
Examples of adaptive codebook parameters include pitch lag and pitch gain.
A lag value may be used as an index into the adaptive codebook.
An adaptive codebook and a pulse codebook may be used for a low rate voiced frame.
The coder uses transformed binary regular pulses with an adaptive codebook.
Updating the adaptive codebook comprises resynchronizing the glottal pulse in the adaptive codebook.
EPMATHMARKEREP The same is done for the adaptive codebook gain.
The adaptive codebook is essentially a block of samples from the past excitation with proper gain.
The length of the adaptive codebook is Nadapt.
The adaptive codebook gain is based on an attenuated value according to Eq.
See also
Figure 5 presents an illustrative embodiment of an adaptive codebook processor.
The method includes determining an adaptive codebook energy and a fixed codebook energy based on a frame.
An adaptive codebook can be configured in a number of ways in a multi-channel coder.
The apparatus of claim 13 wherein the codebook memory comprises an adaptive codebook.
The adaptive codebook gain value in each subframe is set to 0.
A reference vector is modelled by wavelet-type functions and an adaptive codebook is employed.
Specifically, the adaptive codebook vector is calculated using the following equation.
The method of claim 1 wherein the codebook memory comprises an adaptive codebook.
The adaptive codebook may be derived from the long-term filter state.
Then, glottal pulse synchronization is applied to the initial adaptive codebook vector.
Thus, the estimated adaptive codebook distortion can be determined with low complexity.
Furthermore, a significant correlation is to be expected between the adaptive codebook gains of different channels.
The adaptive codebook DICa intended to model the periodicity of the harmonic sounds, and.
The method of claim 1 wherein the adaptive codebook gain is delayed for one subframe.
The just-mentioned delay and gain and filtering is indicated by the adaptive codebook index.
As a consequence, the adaptive codebook will receive the correct phase information when it is updated.
The apparatus of claim 14 wherein the first speech coder comprises an adaptive codebook vector quantizer.
The decoder, for updating the adaptive codebook, resynchronizes the glottal pulse in the adaptive codebook.
Within that range, the gain may assume the value of the delayed adaptive codebook gain.
Primary adaptive codebook history re-encoding / decoding eliminates the dependence on the excitation history of prior frames.
Here, the length of the adaptive codebook is denoted by Nadapt.
Fig . 1b illustrates a representation of an adaptive codebook.
For example, a poorly updated adaptive codebook can cause distorted waveforms for more than ten frames.
Furthermore, the ACELP decoder may also decode the adaptive codebook parameters.
VT is an adaptive codebook vector at pitch delay T ;.
The greater the B, the greater the effect of the adaptive codebook excitation energy.
The adaptive codebook excitation is computed for a size of 64 samples.
This filter 66 has an adaptive codebook structure.
The adaptive codebook gain prediction unit 193 outputs an adaptive codebook gain.
The pitch gain ĝp is defined by the adaptive codebook index 76.
The adaptive codebook vector is specified according to instructions from error minimization section 207.
These methods may be applied as part of the adaptive codebook process 150.
An initial adaptive codebook vector is calculated using the pitch lag and the adaptive codebook 1122.
One example of such a property is an adaptive codebook ( ACB ) gain.
An output of the adaptive codebook 91 is connected to a first input of a multiplier 93.
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