Title:
METHOD AND DEVICE FOR QUANTIZING VECTOR-WISE LINE SPECTRUM FREQUENCY
Document Type and Number:
Japanese Patent JPH07212239
Kind Code:
A
Abstract:
PURPOSE: To provide a strong and consistent device to allow high-performance vector-quantization of a short term parameter expressed as a line spectrum frequency between various speakers and handsets. CONSTITUTION: This device is provided with plural specified code books 11-14 of quantized line spectrum frequency vectors, means for retrieving each specified code book for a candidate line spectrum frequency vector similar to the non- quantized line spectrum frequency vector of an input, means 15-18 for calculating distortion for each candidate vector by using the non-quantized vector of the input, and means 19 for selecting the quantized line spectrum frequency vector from among the candidate vectors from each code book by using the calculated distortion for each candidate vector.
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Inventors:
DANIERU RIN
KUMAA SUWAMINASAN
KUMAA SUWAMINASAN
Application Number:
JP33316193A
Publication Date:
August 11, 1995
Filing Date:
December 27, 1993
Export Citation:
Assignee:
HUGHES AIRCRAFT CO
International Classes:
G10L19/04; G10L19/038; G10L19/07; G10L25/15; H03M7/30; H04B14/04; H04L25/49; (IPC1-7): H03M7/30; G10L9/14; G10L9/18; H04B14/04; H04L25/49
Domestic Patent References:
| JPS6032100A | 1985-02-19 | |||
| JPS61252600A | 1986-11-10 |
Attorney, Agent or Firm:
Takehiko Suzue
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