| 摘要 |
An audio user interface is provided in which items are represented in an audio field by corresponding synthesized sound sources from where sounds related to the items appear to emanate. An audio cursor, in the form of a synthesised sound source from which a distinctive cursor sound emanates, is movable in the audio field under user control. Upon the cursor being moved close to an item-representing sound source, a related audible indication is generated by modifying the sounds emanating from at least one of that item-representing sound source and the cursor. In one embodiment, this audible indication also indicates the current distance between the cursor and item-representing sound source and also the direction of the latter from the cursor. For example, a series of variable - frequency dots and dashes can be used to indicate whether a sound source is above, below, to the left of, or to the right of the cursor. The repetition rate of the dots and dashs may be variable to indicate the distance between the sound source and the cursor. Alternatively, spoken words can be used to indicate the relative positions of the sound source and the cursor.
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