Sound fields can be encoded with a fixed number of signals, using microphones or panning functions. The sound field may later be reproduced approximately by decoding the signals to a loudspeaker array. The Stereo and Ambisonic systems provide examples. A framework is presented for addressing general questions about such encodings. The first problem considered is the conversion between encodings. The solution is applied to the decoding of scene encodings to a loudspeaker array. This is generalised to the decoding of {\em sub-scenes} where the resolution is focused in an angular window. Within an object based audio framework such sub-scenes are useful for representing complex objects without using all the channels required for a full scene. The second problem considered is the compression of a scene encoding to a smaller encoding, from which the original can be reconstructed. The spatial distribution of compression error can be controlled.
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机译：声场可以使用麦克风或声像功能以固定数量的信号进行编码。稍后可以通过将信号解码到扬声器阵列来近似地再现声场。立体声和Ambisonic系统提供了示例。提出了用于解决有关此类编码的一般问题的框架。考虑的第一个问题是编码之间的转换。该解决方案应用于将场景编码解码到扬声器阵列。这一般适用于{\ em sub-scenes}的解码，其中分辨率集中在角度窗口中。在基于对象的音频框架中，此类子场景可用于表示复杂的对象，而无需使用整个场景所需的所有通道。所考虑的第二个问题是将场景编码压缩为较小的编码，从中可以重建原始编码。可以控制压缩误差的空间分布。
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