Title:
広帯域ディジタル信号の信号スペクトルを規定し、かつこの信号スペクトルに応じてビット配置情報を得る機構
Document Type and Number:
Japanese Patent JP3830106
Kind Code:
B2
Abstract:
An arrangement for determining a signal spectrum of a wideband digital audio signal in an adaptive bitallocation system, including a signal splitting unit for splitting the wideband digital audio signal into M narrow band sub signals (SBm), each one of the M sub signals being representative of a component of the wideband digital audio signal which is present in a corresponding one of M adjacent substantially non-overlapping narrow bands in the frequency band of the wideband digital audio signal; and a, calculating unit for each time determining from the M sub signal, information which is representative of the signal spectrum of the wideband digital audio signal, wherein M is an integer larger than one. The calculating unit includes a transformation unit for carrying out on each of the sub signals a time-to-frequency transform based signal processing so as to obtain the information representative of the signal spectrum of the wideband digital audio signal. The time-to-frequency transform based processing can be a Fourier transform.
Inventors:
Van der Kerkhoff Leon Maria
Aitzma Pope
Aitzma Pope
Application Number:
JP53016795A
Publication Date:
October 04, 2006
Filing Date:
May 10, 1995
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H03M7/30; H04B1/66; H04B14/04
Domestic Patent References:
| JP4250723A | ||||
| JP4104617A | ||||
| JP6090208A |
Attorney, Agent or Firm:
Susumu Tsugaru
Masao Sawada
Masao Sawada