Digital speech coder having optimized signal energy parameters

Claim 1

A method for transmitting information that relates to gain information, which gain information is to be applied to excitation information that corresponds to a speech sample, wherein the gain information includes: a first gain value to be applied to a first excitation component, which first excitation component represents a first voice component of the speech sample, which first voice component has a first energy value; at least a second gain value to be applied to a second excitation component, which second excitation component represents a second voice component of the speech sample, which second voice component has a second energy value; the method comprising the steps of: A) providing a speech sample; B) digitizing the speech sample to provide a frame of information comprising at least one subframe; C) determining total energy of the frame of information to provide a long term energy value; D) determining an overall energy value for a subframe of the at least one subframe; E) providing a first parameter, wherein the first parameter is proportional to the overall energy value and inversely proportional to the long term energy value; F) providing a second parameter, wherein the second parameter is proportional to the first energy value and inversely proportional to the overall energy value; and G) transmitting information related to the long term energy value and the first and second parameters.

Claim 2

A method for transmitting information that relates to gain information, which gain information is to be applied to excitation information that corresponds to a speech sample, wherein the gain information includes: a first gain value to be applied to a first excitation component, which first excitation component represents a first voice component of the speech sample, which first voice component has a first energy value; at least a second gain value to be applied to a second excitation component, which second excitation component represents a second voice component of the speech sample, which second voice component has a second energy value; the method comprising the steps of: A) providing a speech sample; B) digitizing the speech sample to provide a frame of information comprising at least one subframe; C) determining total energy of the frame of information to provide a long term energy value; D) determining an overall energy value for a subframe of the at least one subframe; E) providing a first parameter, wherein the first parameter is proportional to the overall energy value and inversely proportional to the long term energy value; F) providing a second parameter, wherein the second parameter is proportional to the first energy value and inversely proportional to the overall energy value; and G) transmitting information related to the long term energy value and the first and second parameters.

Claim 6

A method for transmitting information that relates to gain information for a speech sample, comprising the sleds of: A) providing a speech sample; B) digitizing the speech sample to provide a frame of information comprising at least one subframe; C) determining a first value comprising a long term energy value for the frame of information; D) determining at least a second value, wherein the second value is proportional to an overall energy value and inversely proportional to the long term energy value, wherein the overall energy value is determined for a subframe of the at least one subframe; E) transmitting, at a first rate, information relating to the first value; and F) transmitting, at a second rate more frequent than the first rate, information relating to the second value.

Claim 7

A method for transmitting information that relates to gain information for a speech sample, comprising the sleds of: A) providing a speech sample; B) digitizing the speech sample to provide a frame of information comprising at least one subframe; C) determining a first value comprising a long term energy value for the frame of information; D) determining at least a second value, wherein the second value is proportional to an overall energy value and inversely proportional to the long term energy value, wherein the overall energy value is determined for a subframe of the at least one subframe; E) transmitting, at a first rate, information relating to the first value; and F) transmitting, at a second rate more frequent than the first rate, information relating to the second value.

Claim 8

A method for recovering information that relates to gain information for excitation components of a speech sample, wherein the speech sample is digitized to provide a frame of information comprising at least one subframe, the method comprising the steps of: A) receiving at least one parameter comprising a log term energy value for the frame of information; B) receiving excitation component definition information for at least one excitation component; C) processing the excitation component definition information to provide a pre-component, which pre-component has an energy value; D) determining a gain value that is proportional to the long term energy value and inversely proportional to the energy value; and E) applying the gain value to the pre-component, to provide a recovered excitation component of the speech sample.

Claim 9

A method for recovering information that relates to gain information for excitation components of a speech sample, wherein the speech sample is digitized to provide a frame of information comprising at least one subframe, the method comprising the steps of: A) receiving at least one parameter comprising a log term energy value for the frame of information; B) receiving excitation component definition information for at least one excitation component; C) processing the excitation component definition information to provide a pre-component, which pre-component has an energy value; D) determining a gain value that is proportional to the long term energy value and inversely proportional to the energy value; and E) applying the gain value to the pre-component, to provide a recovered excitation component of the speech sample.

Claim 10

A method for recovering information that relates to gain information for excitation components of a speech sample, wherein the speech sample is digitized to provide a frame of information comprising at least one subframe, the method comprising the steps of: A) receiving a radio signal; B) demodulating the radio signal to provide a recovered signal; C) extracting from the recovered signal at least one parameter comprising a long term energy value for the frame of information; D) extracting from the recovered signal excitation component definition information for at least one excitation component; E) processing the excitation component definition information to provide a pre-component, which pre-component has an energy value; F) determining a gain value that is proportional to the long term energy value and inversely proportional to the energy value; and G) applying the gain value to the pre-component to provide a recovered component of the speech sample.

Claim 11

A method for recovering information that relates to gain information for excitation components of a speech sample, wherein the speech sample is digitized to provide a frame of information comprising at least one subframe, the method comprising the steps of: A) receiving a radio signal; B) demodulating the radio signal to provide a recovered signal; C) extracting from the recovered signal at least one parameter comprising a long term energy value for the frame of information; D) extracting from the recovered signal excitation component definition information for at least one excitation component; E) processing the excitation component definition information to provide a pre-component, which pre-component has an energy value; F) determining a gain value that is proportional to the long term energy value and inversely proportional to the energy value; and G) applying the gain value to the pre-component to provide a recovered component of the speech sample.