METHOD FOR QUANTIZING SPEECH AND AUDIO THROUGH AN EFFICIENT PERCEPTUALLY RELEVANT SEARCH OF MULTIPLE QUANTIZATION PATTERNS
First Claim
1. A method for quantizing a target vector comprising:
- performing a perceptually relevant search of multiple quantization patterns in which one of a plurality of prototype patterns and its associated permutation are selected to quantize the target vector, each prototype pattern in the plurality of prototype patterns being capable of directing quantization across the vector;
converting the one prototype pattern, the associated permutation and quantization information resulting from both to a plurality of bits by an encoder; and
transferring the bits as part of a bit stream.
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Abstract
A method and apparatus is disclosed herein for quantizing data using a perceptually relevant search of multiple quantization patterns. In one embodiment, the method comprises performing a perceptually relevant search of multiple quantization patterns in which one of a plurality of prototype patterns and its associated permutation are selected to quantize the target vector, each prototype pattern in the plurality of prototype patterns being capable of directing quantization across the vector; converting the one prototype pattern, the associated permutation and quantization information resulting from both to a plurality of bits by an encoder; and transferring the bits as part of a bit stream.
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Citations
22 Claims
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1. A method for quantizing a target vector comprising:
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performing a perceptually relevant search of multiple quantization patterns in which one of a plurality of prototype patterns and its associated permutation are selected to quantize the target vector, each prototype pattern in the plurality of prototype patterns being capable of directing quantization across the vector; converting the one prototype pattern, the associated permutation and quantization information resulting from both to a plurality of bits by an encoder; and transferring the bits as part of a bit stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus comprising:
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a selector to perform a search of multiple quantization patterns and select, based on perceptually relevance, one of a plurality of prototype patterns and its associated permutation to quantize a target vector, each prototype pattern in the plurality of prototype patterns being capable of directing quantization across the vector; and an encoder to convert the one prototype pattern, the associated permutation and quantization information resulting from both to a plurality of bits and to transfer the bits as part of a bit stream. - View Dependent Claims (17, 18, 19)
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20. An article of manufacture having one or more computer readable media storing instructions thereon which, when executed by a system, cause the system to perform a method comprising:
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performing a perceptually relevant search of multiple quantization patterns in which one of a plurality of prototype patterns and its associated permutation are selected to quantize the target vector, each prototype pattern in the plurality of prototype patterns being capable of directing quantization across the vector; converting the one prototype pattern, the associated permutation and quantization information resulting from both to a plurality of bits by an encoder; and transferring the bits as part of a bit stream. - View Dependent Claims (21)
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22. A method for decompressing a bit stream comprising:
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receiving the bit stream; decoding bits in the bit stream; recovering a quantized version of a parameter using a quantization pattern, a permutation and a quantization index identified by the decoded bits; creating a quantized version of the target vector by reordering the quantization pattern and the permutation.
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Specification