Design patterns: elements of reusable object-oriented software
Design patterns: elements of reusable object-oriented software
Humdrum and Kern: selective feature encoding
Beyond MIDI
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We present a way to represent complex time-based data such as music using ordered timed sequences and coupled lists, emphasizing flexibility and extensibility. We present a number of strategies for traversing systems of aligned, dependent and parallel lists. We propose a mechanism to decouple sequence algorithms from the underlying data structures similar to the iterator pattern[8] but more appropriate for a complex data organization with coupled lists. The traversal policy is captured in a proceeder-object, while the data itself is accessed through value-inspectors. Some elegant constructs can be achieved by using virtual inspectors. We propose a scheme for efficient insertion and removal in ordered timed sequences based on aligned lists.