TH25849A - Methodology and software for low-rate encoding and decoding - Google Patents

Abstract

A system for low-rate encoding or decoding consists of a set of parameters. Point the mod in the encoded signal to determine whether or not the pre-quantized (coarse) or quantized (fine) information is transmitted in the transmitter (300). Search Finding the first quantization character (212) and the limit quantization character (214) will be treated or predetermined to the preconditionary code word (P) and that of the quantization word. In order to determine the value of the code word with the lowest residual energy value, the index of the P or V code word with the lowest residual value at The most will be set up (220) and this index will be given. Delivery with The appropriate mod indicator P or V in the receiver 330 of the mod pointer shape will be Been used to configure coders (eg vocoders) (350) in order to be held as Signal model from the P code word (configured from the output index) or from the V code word (from the V index output) and the assigned P code word. Preset (Centroid of code word V)

Claims (1)

1. Methodology for low-rate vocoding and communication of The first signal consists of: a) Comparing each of the first quantization code words ("P") of the quantized vector. Each P code word corresponds to one of the indexes. Many of the pre-quantization characters with the first signal and the first P-word-word assignments with corresponding P-collisions have the lowest remaining pre-quantization elements: b) comparison. Each quantized code word (tag code word: