Method, apparatus, program and recording medium for...

Details Method, apparatus, program and recording medium for... Method, apparatus, program and recording medium for...

2011-06-28

2011-06-28

McFadden, Susan (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

Reexamination Certificate

active

07970605

ABSTRACT:
A method and apparatus multiplies a past sample a time lag τ older than a current sample by a quantized multiplier ρ′ on a frame by frame basis, subtracts the multiplication result from the current sample, codes the subtraction result, and codes the time lag using a fixed-length coder if the multiplier ρ′ is smaller than 0.2 or if information about the previous frame is unavailable, or codes the time lag using a variable-length coder if ρ′ is not smaller than 0.2. A multiplier ρ is coded by a multiplier coder and the multiplier ρ′ obtained by decoding the multiplier ρ is outputted. The process is performed for each frame.

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Tilman Liebchen, et al., “MPEG-4 ALS: An Emerging Standard for Lossless Audio Coding”, Data Compression Conference, Mar. 23, 2004, XP010692571, pp. 439-448.

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