Title:
量子化雑音を低減する方法
Document Type and Number:
Japanese Patent JP4796583
Kind Code:
B2
Abstract:
There is described a system (10; 300) for processing an input signal (340) to generate a corresponding encoded output signal (380). The system (10; 300) includes a plurality of quantizing devices (30, 70; 350, 370) coupled in series, the system (10; 300 being configured in operation to reduce tandem quantization noise arising therein by: (a) analyzing the system (10; 300) to determine signal regions (290) in which tandem noise errors occur; and (b) modifying one or more earlier quantizing devices (30; 350) in the system (10; 300) with backward correction to reduce tandem noise arising therein from said determined signal regions (290), said one or more earlier quantizing devices (30; 350) not including a last quantizing device (70; 370) in series the system (10; 300).
Inventors:
Van der fehn minne
Lemma Aveque N
Lemma Aveque N
Application Number:
JP2007537435A
Publication Date:
October 19, 2011
Filing Date:
October 14, 2005
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H03M7/30; H04N19/89; G10L19/16
Domestic Patent References:
| JP2003513563A | 2003-04-08 | |||
| JP2003153272A | 2003-05-23 |
Attorney, Agent or Firm:
Susumu Tsugaru
Akihiko Miyazaki
Fueda Shusen
Akihiko Miyazaki
Fueda Shusen