Wav File Audio Messages - Crestron TPS-12 Operation Manual

Wall Mount Touchpanels
Multi-mode objects offer high-
performance programming!
40 ¥ Wall Mount Touchpanels: TPS-12G/15G-QM-L
Multi-Mode Objects
The single most-advanced VT Pro-e high-performance programming technique
involving the TPS-12G/15G-L is the concept of multi-mode objects. A multi-mode
object (i.e., button, legend, etc.) is an object drawn on a VT Pro-e page that can have
one or more active and inactive visible settings (modes).
For examples, refer to Example Program section of the Crestron website and search
for Multi-mode object examples. This file contains the VT Pro-e touchpanel files and
SIMPL Windows files that illustrate the high-performance capabilities of multi-mode
objects.

WAV File Audio Messages

The TPS-12G/15G-L touchpanels are capable of playing audio messages as system
prompts and responses. These files are recorded as WAV files on a PC using an
audio utility such as Sound Recorder that is packaged with Microsoft Windows
95/98/NT/Me/XP/2000™. Files from other sources may also be converted to an
acceptable format by using this or a similar utility. Many other audio utilities are
available commercially or as shareware. The TPS-12G/15G-L touchpanels only
accept the following WAV file format: PCM, 8KHz, mono, 8-bit. For more
information about how to use Sound Recorder, refer to its User's Guide and
extensive help information provided with the software. Also refer to the help file in
VT Pro-e to learn how to use its audio tool, Sound Manager, to attach WAV files to a
touchpanel project.
Pre-recorded WAV files for voice prompts and responses are available from
Crestron. These files can be stored into and programmed for use in the touchpanel
directly or may be edited with the Sound Recorder. For example, the individual files
can be combined to create custom messages.
NOTE: Touchpanel WAV files can be obtained from the Wave LC Library of the
Crestron FTP site.
Bit Depth and File Size
A bit depth refers to the number of memory bits used to store color data for each
pixel in a raster image. A touchpanel raster image consists of a rectangular grid of
picture elements (pixels). Each pixel uses the same amount of memory to store its
color data. The amount of memory is called the bit depth of the image.
Greater bit depths are required to represent finer gradations of color. Increasing bit
depth necessarily increases file size. A black and white drawing requires only one bit
per pixel to store all the available color information. Using a 32-bit per pixel bit
depth for a black and white image increases the file size 32 times, without adding
anything to the black and white image quality.
In an 8-bit per pixel system, the associated 8-bits of video memory for every screen
pixel, contains a value referring to a location in an 8-bit color table. In this way, any
one of the specific 256 color table locations is assigned to a pixel.
A 16-bit highcolor system is considered sufficient to provide life-like colors. It is
encoded using 5-bits to represent red, 5-bits to represent blue, but (since the human
eye is more sensitive to the color green) 6-bits to represent 64 levels of green. These
can therefore be combined to provide 65,536 mixed colors (32 x 32 x 64 = 65,536).
In a 24-bit graphics display, the video memory allocates 24 bits for each pixel on the
screen, enabling each pixel to take on any one of a possible 16.7 million colors. Each
24-bit value is composed of 8-bits for red, 8-bits for green, and 8-bits for blue. These
triplets of 8-bit values are also referred to as the red, green, and blue color planes. A
24-bit image is actually composed of three component images, which combine to
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Crestron Isys TPS-12G/15G-QM-L
Operations Guide – DOC. 6356