Pitch determination based on weighting of pitch lag candidates

A method of using a processing circuitry for selecting a pitch lag value from a plurality of pitch lag candidates for coding an input speech signal, the method comprising:

• identifying the plurality of pitch lag candidates from a frame of the input speech signal;
• determining a neighboring temporal relationship between one or more of the plurality of pitch lag candidates and one or more previous pitch lag values;
• favoring the one or more of the plurality of pitch lag candidates determined to have the neighboring temporal relationship with the one or more previous pitch lag values, by adaptive weighting using a pitch delay as a factor, over other ones of the plurality of pitch lag candidates;
• selecting the pitch lag value based on the one or more of the plurality of pitch lag candidates favored by the adaptive weighting;
• converting the input speech signal into an encoded speech using the pitch lag value.

A method of using a processing circuitry for selecting a pitch lag value from a plurality of pitch lag candidates for coding an input speech signal, the method comprising:

• identifying the plurality of pitch lag candidates from a frame of the input speech signal using correlation;
• favoring the one or more of the plurality of pitch lag candidates, by adaptive weighting using a pitch delay as a factor, over other ones of the plurality of pitch lag candidates;
• and
• selecting the pitch lag value based on the one or more of the plurality of pitch lag candidates favored by the adaptive weighting;
• converting the input speech signal into an encoded speech using the pitch lag value;
• wherein the adaptive weighting results in a first candidate from the one or more of the plurality of pitch lag candidates over a second candidate from the one or more of the plurality of pitch lag candidates, wherein the second candidate occurs later in time than the first candidate and has a higher correlation value than the first candidate.

A method of using a processing circuitry for selecting a pitch lag value from a plurality of pitch lag candidates for coding an input speech signal, the method comprising:

• identifying the plurality of pitch lag candidates from a frame of the input speech signal, wherein the plurality of pitch lag candidates include a first pitch lag candidate and a second pitch lag candidate;
• comparing the first pitch lag candidate with the second pitch lag candidate;
• detecting a timing relationship between the first pitch lag candidate and the second pitch lag candidate based on the comparing;
• and
• determining the pitch lag value based on the detecting;
• converting the input speech signal into an encoded speech using the pitch lag value.

A processing circuitry for selecting a pitch lag value from a plurality of pitch lag candidates for coding an input speech signal, the processing circuitry comprising elements configured to perform:

• identifying the plurality of pitch lag candidates from a frame of the input speech signal using correlation;
• classifying the input speech signal to obtain a voice classification;
• determining a neighboring temporal relationship between one or more of the plurality of pitch lag candidates and one or more previous pitch lag values;
• favoring the one or more of the plurality of pitch lag candidates determined to have the neighboring temporal relationship with the one or more previous pitch lag values, by adaptive weighting, over other ones of the plurality of pitch lag candidates;
• selecting the pitch lag value based on the voice classification and the one or more of the plurality of pitch lag candidates favored by the adaptive weighting;
• converting the input speech signal into an encoded speech using the pitch lag value.

A processing circuitry for selecting a pitch lag value from a plurality of pitch lag candidates for coding an input speech signal, the processing circuitry comprising elements configured to perform:

• identifying the plurality of pitch lag candidates from a frame of the input speech signal;
• determining a neighboring temporal relationship between one or more of the plurality of pitch lag candidates and one or more previous pitch lag values;
• favoring the one or more of the plurality of pitch lag candidates determined to have the neighboring temporal relationship with the one or more previous pitch lag values, by adaptive weighting using a pitch delay as a factor, over other ones of the plurality of pitch lag candidates;
• selecting the pitch lag value based on the one or more of the plurality of pitch lag candidates favored by the adaptive weighting;
• converting the input speech signal into an encoded speech using the pitch lag value.

A processing circuitry for selecting a pitch lag value from a plurality of pitch lag candidates for coding an input speech signal, the processing circuitry comprising elements configured to perform:

• identifying the plurality of pitch lag candidates from a frame of the input speech signal using correlation;
• favoring the one or more of the plurality of pitch lag candidates, by adaptive weighting using a pitch delay as a factor, over other ones of the plurality of pitch lag candidates;
• and
• selecting the pitch lag value based on the one or more of the plurality of pitch lag candidates favored by the adaptive weighting;
• converting the input speech signal into an encoded speech using the pitch lag value;
• wherein the adaptive weighting results in a first candidate from the one or more of the plurality of pitch lag candidates over a second candidate from the one or more of the plurality of pitch lag candidates, wherein the second candidate occurs later in time than the first candidate and has a higher correlation value than the first candidate.

A processing circuitry for selecting a pitch lag value from a plurality of pitch lag candidates for coding an input speech signal, the processing circuitry comprising elements configured to perform:

• identifying the plurality of pitch lag candidates from a frame of the input speech signal, wherein the plurality of pitch lag candidates include a first pitch lag candidate and a second pitch lag candidate;
• comparing the first pitch lag candidate with the second pitch lag candidate;
• detecting a timing relationship between the first pitch lag candidate and the second pitch lag candidate based on the comparing;
• and
• determining the pitch lag value based on the detecting;
• converting the input speech signal into an encoded speech using the pitch lag value.