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iTunes Control Interface

Module by: Blake Brogdon, Thomas Deitch, Kyle Barnhart, Britt Antley. E-mail the authors

iTunes Control Interface

To accomplish anything useful with our signal processing, we need to drive an application. We chose iTunes, a popular multiplatform program for playing digital music files, as our example application for several reasons. First, the ability to control iTunes through external means is well documented and fairly simple to achieve. More important, however, is the aspect of music or audio playback in a room while simultaneously listening for whistles.

Java-COM

iTunes is both the system to control as well as the dominant source of noise to combat. Based on the profile of the whistle detected, whether it be increasing or decreasing in frequency, we will skip to the next or previous track in iTunes. To accomplish this, LabVIEW makes a call to a Java program that interacts with iTunes by accessing the Component Object Model (COM) interface of Windows. The JACOB library serves as an intermediary to complete this task. JACOB is a native Java-COM bridge, allowing Java programs to simultaneously run and interact with system applications. Once the COM interface receives instructions from LabVIEW, it then interacts with iTunes and changes tracks appropriately.

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Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

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