Title:
SPECTRUM ENCODING DEVICE, SPECTRUM DECODING DEVICE, ACOUSTIC SIGNAL TRANSMISSION DEVICE, ACOUSTIC SIGNAL RECEPTION DEVICE, AND METHODS THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/040749
Kind Code:
A1
Abstract:
There is provided a spectrum encoding device capable of performing encoding with a low bit rate and a high quality. The device includes: means for subjecting a first signal to a frequency conversion and calculating a first spectrum; means for subjecting a second signal to a frequency conversion and calculating a second spectrum; means for estimating the shape of the second spectrum of the FL ≤ k < FH band by using a filter having the first spectrum of the 0 ≤ k < FL band as an internal state; and means for encoding the rough shape of the second spectrum decided according to the coefficient representing the filter characteristic at this time.
More Like This:
| JP59018429 | OUTPUT CORRECTING DEVICE FOR SEMICONDUCTOR PRESSURE CONVERTER |
| JP06307960 | PRESSURE SENSOR |
| WO/2010/040522 | MULTI-RESOLUTION SWITCHED AUDIO ENCODING/DECODING SCHEME |
Inventors:
Oshikiri, Masahiro
Application Number:
PCT/JP2004/016176
Publication Date:
May 06, 2005
Filing Date:
October 25, 2004
Export Citation:
Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-shi, Osaka 01, 57185, JP)
Oshikiri, Masahiro
Oshikiri, Masahiro
International Classes:
G01L19/02; G10L19/02; G10L21/02; G01L19/00; G10L19/00; G10L21/00; (IPC1-7): G01L19/02
Attorney, Agent or Firm:
Washida, Kimihito (5th Floor, Shintoshicenter Bldg. 24-1, Tsurumaki 1-chom, Tama-shi Osaka 34, 20600, JP)
Download PDF: