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78K0R/Lx3 – Sense it!
8. Voice Data Conversion Tool CvADPCM
The Voice Data Conversion Tool CvADPCM is a tool that generates ADPCM data to implement a voice
application for the 78K0R/Lx3 microcontroller. Running on Microsoft Windows
(PCM) into ADPCM (40 kbps to 16 kbps). The result of conversion is output as a source code that can be
read by the IAR Embedded Workbench for 78K.
ADPCM stands for adaptive differential PCM, and it supports the following algorithms.
•
CCITT Recommendation G.726 (40 kbps, 32 kbps, 24 kbps, 16 kbps)
•
NEC Electronics' ADPCM-SP (32 kbps, 24 kbps, 16 kbps)
•
NEC Electronics' ADPCM-SP2 (32 kbps, 16 kbps)
Note: CvADPCM can be used on a PC on which Windows XPTM or Windows VistaTM correctly runs.
This tool may not run on Windows 2000 because it uses the functions of DirectX.
For further information regarding the CvADPCM tool please refer to the Application note CvADPCM
(U19015EJ2V0AN00.pdf) available on CDROM in the directory "Doc\CvADPCM".
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Figure 25: Voice Data Conversion Tool CvADPCM
U20191EE1V0UM00
User's Manual
TM
, this tool converts WAV files
38
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