Title:
PROCESSING METHOD FOR ENCODER AND ENCODER
Document Type and Number:
Japanese Patent JP3640104
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an encoder maximizing calculation accuracy while ensuring real time performance.
SOLUTION: An audio signal is inputted to reset a timer (S1). The frequency of the audio signal is divided into 32 frequency bands (S2) so as to calculate a scale factor (S3). Then a masking level where a processing time is fluctuated based on a signal is calculated (S41) and whether or not a timer value is higher than a reference value is judged (S42). When judged to be higher than the reference value, masking level conversion processing in the step S43 is conducted. When not, the processing of the step S44 is conducted. In this case, the processing in the step S43 is conducted at low accuracy but its processing time is short. On the other hand, the processing of the step S44 is conducted at high accuracy but its processing time is long.
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Inventors:
Masaaki Ikazaki
Application Number:
JP14155996A
Publication Date:
April 20, 2005
Filing Date:
June 04, 1996
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04N19/102; G10L19/00; G10L19/02; G10L19/035; H03M7/30; H04N7/24; H04N19/00; H04N19/115; H04N19/12; H04N19/124; H04N19/134; H04N19/146; H04N19/149; H04N19/169; H04N19/174; H04N19/192; H04N19/196; H04N19/46; H04N19/59; H04N19/625; H04N19/63; H04N19/70; H04N19/91; H04N19/93; (IPC1-7): H03M7/30; G10L19/00; G10L19/02; H04N7/24
Domestic Patent References:
| JP7210324A | ||||
| JP8006585A | ||||
| JP6252774A | ||||
| JP60074729A |
Attorney, Agent or Firm:
Takahisa Sato
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