RU2021108348A - Audio Device and Audio Processing Method - Google Patents

Claims (24)

1. Audio device containing a receiver (201) for receiving data describing an audio scene, the data comprising audio data for a set of audio elements corresponding to audio sources in the specified scene, and metadata containing at least a first index of a transformation property for playing audio for a first audio element from the set of audio elements; a first converter (205) for converting to reproduce audio elements by generating a first set of audio signals for a set of speakers; a second converter (207) for converting to reproduce audio elements by generating a second set of headphone audio signals; and a selector (209) configured to select between the first playback transformer (205) and the second playback transformer (207) for converting the first at least the first part of the audio element in response to the first audio playback transform property indicator; wherein the audio playback transform property pointer indicates whether the first part of the first audio element is associated with a listener's position-dependent position or a listener's position-independent position. 2. The apparatus of claim 1, further comprising a listener position receiver (211) for receiving a listener posture indicative of the listener posture, wherein the first transducer (205) for playback is configured to generate a first set of audio signals independent of the listener posture, and the second transducer (207) ) for playback is configured to generate a second set of audio signals in response to the listener's posture. 3. The apparatus of claim 1, configured to generate audio signals for a plurality of listeners, wherein the first playback converter (205) is configured to generate the first set of audio signals as a common set of audio signals for the plurality of listeners; and the second playback converter (207) is configured to generate a second set of first listener headphone audio signals from the plurality of listeners and generate a third set of second listener headphone audio signals from the plurality of listeners. 4. The device according to any preceding claim, wherein the first part is a frequency subband of the first audio element. 5. The device according to any previous claim, in which the selector (209) is configured to select different transducers (205, 207) for playback from the first transducer (205) for playback and the second transducer (207) for playback for the first part of the first audio element and for second part of the first audio element. 6. The apparatus of claim 1, wherein the audio playback transform property pointer indicates the audio format of the first audio element. 7. The apparatus of claim 1, wherein the audio playback transform property pointer indicates the audio source type of the first audio element. 8. The apparatus of any preceding claim, wherein the audio reproduction transform property pointer indicates a playback transform guide property for the first audio element to be converted to reproduce. 9. The apparatus of claim 8, wherein the audio reproduction conversion property indicator indicates whether the first portion of the first audio element is intended to be converted for playback through speakers or headphones. 10. The apparatus of any preceding claim, wherein the receiver (201) is also configured to receive visual data indicative of a virtual scene corresponding to an audio scene, and the audio playback transform property pointer indicates whether the first audio element represents an audio source corresponding to an audio scene object. 11. The device according to any previous claim, also containing a user input for receiving user input, and wherein the selector (211) is configured to select between the first converter (205) for playback and the second converter (207) for playback to convert to play at least at least the first part of the first audio element in response to user input. 12. The device according to any previous claim, in which the selector (209) is configured to determine the audio property of the first audio element and select between the first transducer (205) for playback and the second transducer (207) for playback for converting to reproduce at least the first part of the first audio element in response to the audio property. 13. An audio processing method including receiving data describing an audio scene, the data comprising audio data for a set of audio elements corresponding to audio sources in the specified scene, and metadata containing at least a first index of a transformation property for playing audio for a first audio element of the set of audio elements; converting to reproduce audio elements by generating a first set of audio signals for a set of speakers; converting to reproduce audio elements by generating a second set of headphone audio signals, and selecting between a transformation to reproduce at least the first part of the first audio element for a set of speakers and for headphones in response to the first index of the transformation property for audio reproduction, wherein the audio playback transform property pointer indicates whether the first part of the first audio element is associated with a listener's position-dependent position or a listener's position-independent position. 14. A computer program product containing computer program code means capable of performing all the steps of claim 13 when said program is executed on a computer.