Digital Synthesis by Plug-in Method in Java Media Framework Environment

This paper deals with the implementation of real-time digital musical sound synthesizers by the Plug-In method in the Sun Microsystems Java Media Framework environment. This environment use the Plug-In technology as well as the DirectX or VST environments, but the implementation methods are different. 1. JAVA MEDIA FRAMEWORK Java is object-oriented multi-platform programming language developed by the Sun Microsystems company that is used mainly for Internet applet production. The Java Media Framework (JMF) is an application programming interface (API) for incorporating time-based media into Java applications and applets. The JMF 1.0 API (the Java Media Player API) enabled programmers to develop Java programs that presented time-based media. The JMF 2.0 API extends the framework to provide support for capturing and storing media data, controlling the type of processing that is performed during playback, and performing custom processing on media data streams. In addition, JMF 2.0 defines a plug-in API that enables advanced developers and technology providers to more easily customize and extend JMF functionality. 1.1. High-Level Architecture Devices such as tape decks and VCRs provide a familiar model for recording, processing, and presenting time-based media. When you play a movie using a VCR, you provide the media stream to the VCR by inserting a video tape. The VCR reads and interprets the data on the tape and sends appropriate signals to your television and speakers. JMF uses this same basic model. A data source encapsulates the media stream much like a video tape and a player provides processing and control mechanisms similar to a VCR. Playing and capturing audio and video with JMF requires the appropriate input and output devices such as microphones, cameras, speakers, and monitors. A data source encapsulates the media stream much like a video tape and a player provides processing and control mechanisms similar to a VCR. Playing and capturing audio and video with JMF requires the appropriate input and output devices such as microphones, cameras, speakers, and monitors. Data sources and players are integral parts of JMF's high-level API for managing the capture, presentation, and processing of time-based media. JMF also provides a lower-level API that supports the seamless integration of custom processing components and extensions. This layering provides Java developers with an easy-to-use API for incorporating time-based media into Java programs while maintaining the flexibility and extensibility required supporting advanced media applications and future media technologies. Figure 1. High-level JMF architecture