1. A method comprising: displaying a spatio-temporal graph that visually indicates one or more positions of a sound object in a range of times and indicates a state of the sound object over the range of times, wherein the state of the sound object relates to an audio property of the sound object; enabling user adaptation of the spatio-temporal graph to change a position of the sound object in at least a portion of the range of times and/or change the state of the sound object over at least a portion of the range of times; and rendering of spatial audio output, via an audio coder, using the position and the state of the sound object indicated by the adapted spatio-temporal graph.