Title:
FRAGMENT INFORMATION GENERATION DEVICE, AUDIO COMPOSITING DEVICE, AUDIO COMPOSITING METHOD, AND AUDIO COMPOSITING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2012/160767
Kind Code:
A1
Abstract:
Provided is a fragment information generation device, with which it is possible to generate a waveform with a small amount of computation, with which, even when using a fragment with a low natural audio pitch frequency interval which is a fragment creation source, it is possible to avoid a degradation of sound quality of composite audio, and with which it is possible to reduce information data volume of a fragment with a high pitch frequency interval without impairing sound quality of composite audio. A waveform cropping means (81) crops an audio waveform from natural audio in a time period which is not dependent on the natural audio pitch frequency. A characteristic parameter extraction means (82) extracts a characteristic parameter of the audio waveform which is cropped by the waveform cropping means (81) from said audio waveform. A time region waveform generation unit (83) generates a time region waveform on the basis of the characteristic parameter.
Inventors:
KATO MASANORI (JP)
Application Number:
PCT/JP2012/003060
Publication Date:
November 29, 2012
Filing Date:
May 10, 2012
Export Citation:
Assignee:
NEC CORP (JP)
KATO MASANORI (JP)
KATO MASANORI (JP)
International Classes:
G10L13/06
Foreign References:
| JP2001034284A | 2001-02-09 | |||
| JP2011090218A | 2011-05-06 | |||
| JPH10207488A | 1998-08-07 |
Attorney, Agent or Firm:
IWAKABE, Fuyuki et al. (JP)
Rock face Fuyuki (JP)
Rock face Fuyuki (JP)
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Claims: