User`s manual

AMBE-3000™-HDK Development Board
User’s Manual Version 1.1
Page 33
DVSI Confidential Proprietary
Operation
COM4 is the COM port on the PC that the HDK will communicate on
460800 is the baud rate of the PC connection
-ppt sets the HDK to use the PPT Interface of the AMBE-3000™ Vocoder chip
or
-uart sets the HDK to use the UART Interface of the AMBE-3000™ Vocoder chip
If neither –ppt or –uart is specified the PPT interface is used by default.
-r39 is the rate index of the bit rate the file is to be encoded at 3600bps.
-enc encodes the PCM file and saves it to a file
dvsi.pcm is the name of the PCM file to be encoded
dvsi36tst.bit is the name of the file to be saved
To validate that the file was encoded correctly simply compare the created file dvsi36tst.bit with
the similar file dvsi36.bit included on the HDK CD.
In the HDK directory use the following DOS command.
C:\ Command Prompt
- ’ X
cmp dvsi36.bit dvsi36tst.bit
Decode File
-dec is used to decode a previously encoded (.bit) file from the PC, When the HDK receives the
encoded (.bit) file over the USB interface it is processed by the AMBE-3000™ Vocoder Chip’s decoder.
The synthesized digital speech data is sent back to the PC via the USB interface and saved as the
(.pcm suffix) file named in the command line.