Elmo CRA-1 - Manual (Page 62)

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Cannot play the audio of a teaching material with Image Mate Accent
Is the video a lesson recording?
The video types are lesson recording, normal recording,
intermittent recording and frame recording. Of these,
audio is recorded only with lesson recording. Audio is
not recorded with the other video types.
Are the audio settings suitable?
If the input volume was low during video recording or
the playback volume is low, it may be difficult to hear the
audio.
Set the volume to a suitable level.
Is the sound device of the
computer set to a suitable level?
Audio recording and audio playback is not possible in a
computer environment in which a sound device is not
installed.
Caution
Operation is not guaranteed for all
computer environments.