Method and apparatus for efficient delivery and usage of audio messages for high quality of experience

A content consumption device system configured to:

• receive at least one first Audio Stream associated to an Audio scene to be reproduced,
• wherein the content consumption device system comprises:
• at least one media Audio decoder configured to decode at least one Audio signal from the at least one first Audio Stream for the representation of the scene to the user;
• a metadata processor;
• a first processor, configured to:
• receive a current user's movement data and/or user's selection and/or metadata;
• decide, based at least on the user's current movement data and/or metadata and/or user's selection, whether an Earcon is to be reproduced, wherein the Earcon is independent of the at least one Audio signal, wherein the Earcon is associated to Earcon metadata and
• request, at the first processor's decision that the Earcon is to be reproduced, a modification of Earcon metadata, to the metadata processor;
• and
• wherein the metadata processor is configured to receive an Earcon metadata, to receive a request to modify the Earcon metadata from the first processor, and to modify the Earcon metadata to a modified Earcon metadata according to the request from the first processor,
• wherein the first processor is further configured to cause the reproduction of the Earcon according to the modified Earcon metadata,
• wherein the content consumption device system is configured to generate the Earcon metadata;
• and
• wherein the content consumption device system further comprises an Audio generator configured to generate at least one additional Stream in which the Earcon is encoded, based on the Earcon metadata generated by the Earcon metadata generator.