 LOWPASS: Demonstrates Multimedia File I/O Services to Read
 and Write RIFF Files

 The LOWPASS sample application illustrates how to use 
 multimedia file I/O services to read and write resource 
 interchange file format (RIFF) files.

 LOWPASS runs a simple low-pass filter over an 8-bit-per-
 sample mono WAVE file. The program displays a dialog box in 
 which you can enter input and output WAVE file names. When 
 you click Run Filter, the program retrieves the file names 
 from the dialog box, reads the waveform data from the input 
 file, performs a simple low-pass filter by averaging 
 adjacent samples, and writes the filtered waveform data to 
 the output WAVE file. LOWPASS does not copy unknown chunks 
 to the output file.

 LOWPASS was built and tested under Microsoft(R) Windows(TM) 
 version 3.1.
