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Voice Editor 7-4
B1272M001 BARNETT ENGINEERING LTD. ProTalk Cv2
7.2 Wave File Conversion
Access to the wave file converter is through the drop-down File menu.
The Cv2 uses Adaptive Differential Pulse Code Modulation (ADPCM) operating at 32 kbps to
convert audio signals to digital form. ADPCM converted voice phrases are specifically
delimited and padded for use by the Cv2. This wave file converter allows you to create phrase
files using the audio functions available in a PC instead of recording the phrases through the
programming telephone.
When creating a phrase on the PC, the recorder should be set for either 8 or 16 bit sampling at
a rate of 8,000 bytes per second. Higher sample rates do not produce better audio quality but
if a faster rate is used it should be a multiple of 8,000. Stereo files cannot be converted.
Press the Source button to select the wave (.wav) file that is to be converted. Press the
destination button to select a name and location for the output ADPCM file. Press Convert to
generate the output file.
The generated ADPCM tile has the extension .vox and can be used by the Voice Editor to
create message files for the Cv2.