Audio encoding to convey auxiliary information, and decoding of same

A method comprising:

• receiving, by a computing device, data representing audio, wherein the data includes redundant instances of a sequence of bits of auxiliary information hidden in the data based on a carrier signal and a local gain that varies within the data representing the audio, wherein the sequence of bits of auxiliary information includes at least one fixed registration sequence for registration of the auxiliary information within the data and at least one message sequence, wherein at least one redundant instance of the auxiliary information includes the fixed registration sequence, and wherein the fixed registration sequence and the at least one message sequence are interleaved in at least a portion of the data;
• registering the data representing the audio or the sequence of bits of auxiliary information within the data with reference to at least the fixed registration sequence;
• and
• decoding at least one instance of the auxiliary information by at least determining threshold levels associated with the auxiliary information.

A non-transitory computer readable medium having instructions stored thereon, the instructions comprising:

• instructions to receive data representing audio, wherein the data includes redundant instances of a sequence of bits of auxiliary information hidden in the data based on a carrier signal and a local gain that varies within the data, wherein the sequence of bits of auxiliary information includes at least one fixed registration sequence for registration of the auxiliary information and at least one message sequence, wherein at least one redundant instance of the auxiliary information includes the fixed registration sequence, and wherein the fixed registration sequence and the at least one message sequence are interleaved in at least a portion of the data:
• instructions to register the data representing the audio or the sequence of bits of auxiliary information within the data with reference to at least the fixed registration sequence;
• and
• instructions to decode at least one instance of the auxiliary information by at least determining threshold levels associated with the auxiliary information.

An apparatus comprising:

• a memory configured to store data representing audio;
• and
• a processor operatively coupled to the memory and configured to:
• alter the data representing the audio to include a sequence of bits of auxiliary information, wherein the altering is based on a carrier signal and a local gain that varies within the data representing the audio, wherein the sequence of bits of auxiliary information includes at least one fixed registration sequence for registration of the auxiliary information within the data and at least one message sequence, wherein the fixed registration sequence and the message sequence are interleaved in the data, and wherein code signals representing the fixed registration sequence allow detection of the fixed registration sequence through an analysis of signal thresholds associated with the auxiliary information;
• and
• repeat the altering of the data representing the audio to include redundant instances of at least a portion of the auxiliary information that includes the fixed registration sequence.

An apparatus comprising:

• a memory configured to store data representing audio, wherein the data includes redundant instances of a sequence of bits of auxiliary information that is hidden in the data based on a carrier signal and a local gain that varies within the data representing the audio, wherein the sequence of bits of auxiliary information includes at least one fixed registration sequence for registration of the auxiliary information within the data and at least one message sequence, wherein at least one redundant instance of the auxiliary information includes the fixed registration sequence, and wherein the fixed registration sequence and the at least one message sequence are interleaved in at least a portion of the data;
• and
• a processor operatively coupled to the memory and configured to:
• register the data representing the audio or the sequence of bits of auxiliary information within the data with reference to at least the fixed sequence;
• and
• decode at least one instance of the auxiliary information based on threshold levels associated with the auxiliary information.

An apparatus comprising:

• a memory configured to store data representing audio;
• and
• a processor operatively coupled to the memory and configured to:
• alter samples of the data representing the audio to include a sequence of bits of auxiliary information, wherein the altering is based on a carrier signal and data hiding attributes of the samples that vary within the data representing the audio, wherein the sequence of bits of auxiliary information includes at least one fixed sequence for registration of the auxiliary information within the data representing the audio;
• and
• repeat the altering of the data representing the audio to include redundant instances of at least a portion of the auxiliary information that includes the fixed sequence.