Application:            Audio Recorder and Playback
                                (SAMPLER)


Input:      Microphone connected to the RCA IN jack.

Output:     The output is sent to the DSK's RCA OUT jack. You can connect a
            LOW POWER speaker to hear the playback. Status indicators are
            sent back to the PC to indicate when record/playback modes are
            completed.


Files:
            SAMPLER.ASM - This file is the assembly source code

            SAMPLER.DSK - This is an assembled version od SAMPLER.ASM
                          It is ready to be loaded into the DSK.

            SAMPLER.EXE - Host program used to control the MODE of
                          operation. Execute this file to automatically
                          load the SAMPLER.DSK application file.

            SAMPLER.ICO - Icon for Windows group. SAMPLER.EXE can be run
                          in a DOS shell from Windows.


Operating Hints:

This application samples the microphone input and packs two 8-bit data
words into one 16 bit location. The data buffer begins at 1000h is data
space. The end of buffer is 2C00h (end of internal SARAM).

This application does not perform a speech comp/decomp algorithm. The
incoming data is loaded from the AIC where the 8 LSBs are truncated. The
MSBs are packed with the previous word (truncated by 8-bits) received.
Therefore, if the incoming signal is small so that the 8-bit boundary is
not exceeded, the signal data will not be recorded. If modifying the code
be sure to keep the sign bit of the incoming data. Noise can be a problem,
so be sure your microphone is grounded well.
