Wide-band signal encoder

Details Wide-band signal encoder Wide-band signal encoder

G - Physics

10

L

G10L 19/02 (2006.01) G10L 19/00 (2006.01)

Patent

CA 2169999

The present invention relates to a wide-band signal encoder for high quality encoding of wide-band signals, such as an audio signal, with low bit rates, particularly about 64 kb/s. A block length judging circuit switches block lengths based on a sample quantity obtained from an input signal. A transform circuit executes a transform of the signal into frequency components according to the block length. A masking threshold calculating circuit calculates a masking threshold simulating the masking characteristic of a psychoacoustical property for each predetermined intra-block section. An inter-block/intra-block bit assignment circuit executes inter-block bit number assignment and/or intra-block bit number assignment to each predetermined intra-block section. A vector quantization circuit vector quantizes a transform signal by switching codebooks according to the assignment bit number, and also quantizes gain by using a gain codebook.

Affiliated with

Also associated with

Rating

Wide-band signal encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wide-band signal encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wide-band signal encoder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1624389