Cisco Technology, Inc. (20250131931). VECTOR QUANTIZER CORRECTION FOR AUDIO CODEC SYSTEM
VECTOR QUANTIZER CORRECTION FOR AUDIO CODEC SYSTEM
Organization Name
Inventor(s)
Raul A. Casas of Doylestown PA US
Samer Lutfi Hijazi of San Jose CA US
Mihailo Kolundzija of Lausanne CH
VECTOR QUANTIZER CORRECTION FOR AUDIO CODEC SYSTEM
This abstract first appeared for US patent application 20250131931 titled 'VECTOR QUANTIZER CORRECTION FOR AUDIO CODEC SYSTEM
Original Abstract Submitted
a method comprises: vector quantizing input vectors representative of audio into an original sequence including indices of codewords of a codebook; generating candidate sequences including the indices of the codewords of the codebook by evaluating, for each candidate sequence, transition costs for transitions between the indices based on (i) transition probabilities of the transitions, and (ii) distances between the codewords represented by the indices and the input vectors that corresponds to the indices; determining a preferred candidate sequence of the candidate sequences to replace the original sequence based on the transition costs for each candidate sequence; and transmitting the preferred candidate sequence in place of the original sequence.
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