Selecting channel adjustment method for inter-frame temporal shift variations

A multi-channel audio coding device comprising

• an encoder configured to:
• receive a reference channel and a target channel, the reference channel including a set of reference samples, and the target channel including a set of target samples;
• determine a variation between a first mismatch value and a second mismatch value, the first mismatch value indicative of an amount of temporal mismatch between a first reference sample of the set of reference samples and a first target sample of the set of target samples, the second mismatch value indicative of an amount of temporal mismatch between a second reference sample of the set of reference samples and a second target sample of the set of target samples;
• select a particular adjustment technique from a plurality of adjustment techniques based on a comparison of the variation with a first threshold;
• use the variation subsequent to the comparison to perform the particular adjustment technique to adjust the set of target samples to generate an adjusted set of target samples;
• and
• generate at least one encoded channel based on the set of reference samples and the adjusted set of target samples;
• and
• a network interface configured to transmit the at least one encoded channel.

A multi-channel audio coding apparatus comprising:

• means for receiving a reference channel, the reference channel including a set of reference samples;
• means for receiving a target channel, the target channel including a set of target samples;
• means for determining a variation between a first mismatch value and a second mismatch value, the first mismatch value indicative of an amount of temporal mismatch between a first reference sample of the set of reference samples and a first target sample of the set of target samples, the second mismatch value indicative of an amount of temporal mismatch between a second reference sample of the set of reference samples and a second target sample of the set of target samples;
• means for selecting a particular adjustment technique from a plurality of adjustment techniques based on a comparison of the variation with a first threshold;
• means for using the variation subsequent to the comparison to perform the particular adjustment technique to adjust the set of target samples to generate an adjusted set of target samples;
• means for generating at least one encoded channel based on the set of reference samples and the adjusted set of target samples;
• and
• means for transmitting the at least one encoded channel.

A non-transitory computer-readable medium storing instructions that, when executed by a processor, cause the processor to perform operations comprising:

• receiving, at a first device, a reference channel and a target channel, the reference channel including a set of reference samples, and the target channel including a set of target samples;
• determining, at the first device, a variation between a first mismatch value and a second mismatch value, the first mismatch value indicative of an amount of temporal mismatch between a first reference sample of the set of reference samples and a first target sample of the set of target samples, the second mismatch value indicative of an amount of temporal mismatch between a second reference sample of the set of reference samples and a second target sample of the set of target samples;
• selecting, at the first device, a particular adjustment technique from a plurality of adjustment techniques based on a comparison of the variation with a first threshold;
• using the variation subsequent to the comparison, at the first device, to perform the particular adjustment technique to adjust the set of target samples to generate an adjusted set of target samples;
• generating, at the first device, at least one encoded channel based on the set of reference samples and the adjusted set of target samples;
• and
• transmitting the at least one encoded channel from the first device to a second device.