Title:
無損失符号化装置及び無損失復号化装置
Document Type and Number:
Japanese Patent JP6585753
Kind Code:
B2
Abstract:
A lossless coding method comprises obtaining an energy, in units of a band, from transform coefficients of an audio signal; selecting one of a first coding method and a second coding method for a differential quantization index of the energy; and coding the differential quantization index by using the selected coding method. The method selects the first coding method when at least one differential quantization index of all bands excepting a first differential quantization index is not represented in [-32, 31] or when the first differential quantization index is not represented in [-46, 17]; and selects a coding method where a smaller number of bits is consumed. The first coding method includes a pulse mode and a scale mode using Huffman coding. If the scale mode is selected then a first group of bits is coded by Huffman coding and a second group of bits is packed.
Inventors:
Chu, Kyung
Application Number:
JP2018036831A
Publication Date:
October 02, 2019
Filing Date:
March 01, 2018
Export Citation:
Assignee:
Samsung Electronics Company Limited
International Classes:
G10L19/02; G10L19/00; G10L19/002; G10L19/20
Domestic Patent References:
| JP6302071B2 |
Foreign References:
| US20130110522 | ||||
| US20090030678 | ||||
| US20080112632 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki