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| Content Provider | ACM Digital Library |
|---|---|
| Author | Swinehart, Daniel C. Terry, Douglas B. |
| Copyright Year | 1988 |
| Description | Author Affiliation: Xerox Palo Alto Research Center, Palo Alto, CA(Swinehart, Daniel C.; Terry, Douglas B.) |
| Abstract | The voice manager in the Etherphone system provides facilities for recording, editing, and playing stored voice in a distributed personal-computing environment. It provides the basis for applications such as voice mail, annotation of multimedia documents, and voice editing using standard text-editing techniques. To facilitate sharing, the voice manager stores voice on a special voice file server that is accessible via the local internet. Operations for editing a passage of recorded voice simply build persistent data structures to represent the edited voice. These data structures, implementing an abstraction called voice ropes, are stored in a server database and consist of lists of intervals within voice files. Clients refer to voice ropes solely by reference. $\textit{Interests},$ additional persistent data structures maintained by the server, serve two purposes: First, they provide a sort of directory service for managing the voice ropes that have been created. More importantly, they provide a reliable reference-counting mechanism, permitting the garbage collection of voice ropes that are no longer needed. These interests are grouped into classes; for some important classes, obsolete interests can be detected and deleted by a class-specific algorithm that runs periodically. |
| Starting Page | 3 |
| Ending Page | 27 |
| Page Count | 25 |
| File Format | |
| ISSN | 07342071 |
| e-ISSN | 15577333 |
| DOI | 10.1145/35037.35038 |
| Volume Number | 6 |
| Issue Number | 1 |
| Journal | ACM Transactions on Computer Systems (TOCS) |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1988-02-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science |
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