Inter-channel encoding and decoding of multiple high-band audio signals
AssigneeQUALCOMM Incorporated
InventorsVenkatraman Atti, Venkata Subrahmanyam Chandra Sekhar Chebiyyam
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Abstract
A device includes an encoder configured to generate a first high-band portion of a first signal based on a left signal and a right signal. The encoder is also configured to generate a set of adjustment gain parameters based on a high-band non-reference signal and a synthesized signal. The high-band non-reference signal corresponds to one of a left high-band portion of the left signal or a right high-band portion of the right signal.
Claims30
A device comprising:
- an encoder configured to:
- generate a first high-band portion of a first signal based on a left signal and a right signal;
- designate a reference signal, wherein one of the left signal or the right signal is designated as the reference signal, and the other one of the left signal or the right signal is a non-reference signal;
- and
- generate a set of adjustment gain parameters based on a high-band non-reference signal and a synthesized signal, the high-band non-reference signal corresponding to a high-band portion of the non-reference signal.
A device comprising:
- a receiver configured to receive information, a set of adjustment gain parameters, and a reference channel indicator;
- and
- a decoder configured to:
- generate a first high-band portion of a first signal based on the information;
- generate a non-reference high-band portion of a non-reference signal based on the set of adjustment gain parameters;
- generate a second set of adjustment gain parameters based at least in part on the set of adjustment gain parameters, a ratio of low-band energies, or a combination thereof;
- and
- generate a reference high-band portion of a reference signal based at least in part on the second set of adjustment gain parameters.
A method comprising:
- receiving, at a device, information, a set of adjustment gain parameters, and a reference channel indicator;
- generating, at the device, a first high-band portion of a first signal based on the information;
- generating, at the device, a non-reference high-band portion of a non-reference signal based on the set of adjustment gain parameters;
- generating, at the device, a second set of adjustment gain parameters based at least in part on the set of adjustment gain parameters, a ratio of low-band energies, or a combination thereof;
- and
- generating, at the device, a reference high-band portion of a reference signal based at least in part on the second set of adjustment gain parameters.
A non-transitory computer-readable medium storing instructions that, when executed by one or more processors, cause the one or more processors to:
- receive information, a set of adjustment gain parameters, and a reference channel indicator;
- generate a first high-band portion of a first signal based on the information;
- generate a non-reference high-band portion of a non-reference signal based on the set of adjustment gain parameters;
- generate a second set of adjustment gain parameters based at least in part on the set of adjustment gain parameters, a ratio of low-band energies, or a combination thereof;
- and
- generate a reference high-band portion of a reference signal based at least in part on the second set of adjustment gain parameters.
An apparatus comprising:
- means for receiving information, a set of adjustment gain parameters, and a reference channel indicator;
- means for generating a first high-band portion of a first signal based on the information;
- means for generating a non-reference high-band portion of a non-reference signal based on the set of adjustment gain parameters;
- means for generating a second set of adjustment gain parameters based at least in part on the set of adjustment gain parameters, a ratio of low-band energies, or a combination thereof;
- and
- means for generating a reference high-band portion of a reference signal based at least in part on the second set of adjustment gain parameters.
Dependencies are inferred from the claim text.