Audio processing apparatus and method and program
The present technology relates to an audio processing apparatus and method and a program that are configured to adjust audio characteristics more easily. This audio processing apparatus has a display control unit configured, on the basis of object positional information of an audio object, to cause a display unit to display an audio object information image indicative of a position of the audio object and a selection unit configured to select the predetermined audio object from among one or a plurality of the audio objects. The present technology is applicable to video/audio processing apparatuses.
1. An audio processing apparatus comprising:
a demultiplexer configured to demultiplex an input signal into a video portion, a background portion, and an audio object portion;
an audio object decoder configured to decode the audio object portion into an audio object positional information of an audio object and an audio signal of the audio object;
a background decoder configured to decode the background portion into a background sound signal;
a video decoder configured to decode the video portion into a video signal;
a display controller configured to cause a display unit to display
a video image based on the video signal, and
an audio object information image indicative of a position of the audio object, the audio object information image being displayed in a superimposed manner relative to the video image such that the video image is visible under the audio object information image; and
a selector configured to select the audio object from among a plurality of audio objects.
2. The audio processing apparatus according to claim 1 , further comprising:
a parameter setter configured to set a parameter related to audio of the audio object selected by the selector.
3. The audio processing apparatus according to claim 2 , further comprising:
a signal adjuster configured, based on the parameter, to execute processing to adjust audio characteristics on one or both of: the audio signal of the audio object and the background sound signal.
4. The audio processing apparatus according to claim 3 , wherein the parameter is a parameter for one of: volume adjustment and sound quality adjustment.
5. The audio processing apparatus according to claim 2 , further comprising:
a rendering processor configured to execute a rendering process on the audio signal of the audio object.
6. The audio processing apparatus according to claim 5 , wherein
the parameter is a parameter for specifying a position of the audio object; and
the rendering processor executes the rendering process based on the parameter.
7. The audio processing apparatus according to claim 1 , wherein the display controller causes the audio object information image to be displayed at a position determined by object positional information decoded from the audio object portion of the input signal.
8. The audio processing apparatus according to claim 7 , wherein, if the position determined by the object positional information is outside a display screen of the display unit, the display controller causes the audio object information image to be displayed at an end portion of the display screen.
9. The audio processing apparatus according to claim 7 , wherein the selector selects the audio object in accordance with a specification manipulation by a user at the position of the audio object information image on a display screen of the display unit.
10. An audio processing method comprising:
demultiplexing an input signal into a video portion, a background portion, and an audio object portion;
decoding the audio object portion into audio object positional information of an audio object and an audio signal of the audio object;
decoding the background portion into a background sound signal;
decode the video portion into a video signal;
causing a display unit to display a video image based on the video signal and an audio object information image indicative of a position of the audio object, the audio object information image being displayed in a superimposed manner relative to the video image such that the video image is visible under the audio object information image; and
selecting the audio object from among a plurality of audio objects.
11. A non-transitory computer-readable storage medium storing a program that when executed causes a computer to perform an audio processing method, wherein the method comprises:
demultiplexing an input signal into a video portion, a background portion, and an audio object portion;
decoding the audio object portion into an audio object positional information of an audio object and an audio signal of the audio object;
decoding the background portion into a background sound signal;
decode the video portion into a video signal;
causing a display unit to display a video image based on the video signal and an audio object information image indicative of a position of the audio object, the audio object information image being displayed in a superimposed manner relative to the video image such that the video image is visible under the audio object information image; and
selecting the audio object from among a plurality of audio objects.