CA2684452C

5G,4G,3G,2G

Title

SPEECH CODER AND SPEECH DECODER

Application Number:

CA19982684452

Publication Date:

14-01-2014

Current Assignee:

Family ID:

Application Date:

22-10-1998

Publication Country:

US

Priority Date:

22-10-1997

Title

SPEECH CODER AND SPEECH DECODER

Application Number:

CA19982684452

Family ID:

Publication Country:

US

Publication Date:

14-01-2014

Application Date:

22-10-1998

Priority Date:

22-10-1997

Current Assignee:

Abstract  Abstract

The present invention provides a vector quantization apparatus and method for a parameter vector obtained by an LPC analysis of an input speech signal the apparatus comprising an LPC analyzing section a conversion section a target vector extracting section a first quantizing section that performs a first stage of the coding of the target vector using a first code vector stored in a first codebook an amplifier storing section and a second quantizing section wherein the amplifier storing section outputs the scalar predetermined to be used when the first code vector is used in the second quantizing section. The apparatus and method provided an improvement in the subjective quality and also the object of value of a coded or decoded speech. The present apparatus and method may be used and applied to the low bit rate speech coding technique used in a cellular phone or a music coder or an image coder.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.