Transmission apparatus, transmission method. reception apparatus and reception method for transmitting a plurality of types of audio data items

An information processing method comprising:

• receiving a container in a predetermined format;
• extracting a plurality of audio streams included in the container in a predetermined format;
• outputting a synthesized audio stream obtained by synthesizing the plurality of audio streams;
• and
• performing decoding processing for obtaining audio data for driving one or a plurality of output units with respect to the synthesized audio stream,
• wherein the synthesized audio stream includes coded data, the coded data including object coded data, the object coded data including an audio object and metadata for mapping and rendering the audio object on one or more audio output devices,
• wherein the coded data is classified into groups by type,
• wherein the plurality of audio streams includes an identifier indicating a content type, the identifier having a value from 0 to 15,
• wherein the plurality of audio streams includes a group identifier (group ID) that is an identifier for identifying a group, a switch group identifier (switch Group ID) that is an identifier for identifying a switching group, and a preset group identifier (preset Group ID) that is an identifier for identifying a preset group,
• wherein the plurality of audio streams comprises an audio frame, the audio frame including a plurality of audio stream packets, each audio stream packet including a header and a payload,
• wherein the header comprises a packet type information, a packet label, and a packet length,
• wherein the payload of a first audio stream packet of the plurality of audio stream packets includes a SYNC information corresponding to a synchronization start code,
• wherein the payload of a second audio stream packet of the plurality of audio stream packets includes a Frame information comprising the coded data,
• wherein the payload of a third audio stream packet of the plurality of audio stream packets includes a Config information indicating a configuration of the Frame information, and
• wherein the metadata is included as an extension element configured to map and render a single channel element to a speaker.

A non-transitory computer readable medium having stored thereon a program for causing a computer to execute an information processing method, the information processing method comprising:

• receiving a container in a predetermined format;
• extracting a plurality of audio streams included in the container in a predetermined format;
• outputting a synthesized audio stream obtained by synthesizing the plurality of audio streams;
• and
• performing decoding processing for obtaining audio data for driving one or a plurality of output units with respect to the synthesized audio stream,
• wherein the synthesized audio stream includes coded data, the coded data including object coded data, the object coded data including an audio object and metadata for mapping and rendering the audio object on one or more audio output devices,
• wherein the coded data is classified into groups by type,
• wherein the plurality of audio streams includes an identifier indicating a content type, the identifier having a value from 0 to 15,
• wherein the plurality of audio streams includes a group identifier (group ID) that is an identifier for identifying a group, a switch group identifier (switch Group ID) that is an identifier for identifying a switching group, and a preset group identifier (preset Group ID) that is an identifier for identifying a preset group,
• wherein the plurality of audio streams comprises an audio frame, the audio frame including a plurality of audio stream packets, each audio stream packet including a header and a payload,
• wherein the header comprises a packet type information, a packet label, and a packet length,
• wherein the payload of a first audio stream packet of the plurality of audio stream packets includes a SYNC information corresponding to a synchronization start code,
• wherein the payload of a second audio stream packet of the plurality of audio stream packets includes a Frame information comprising the coded data,
• wherein the payload of a third audio stream packet of the plurality of audio stream packets includes a Config information indicating a configuration of the Frame information, and
• wherein the metadata is included as an extension element configured to map and render a single channel element to a speaker.