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SL voice now makes it practical to have live entertainment and virtual
sessions in a classroom or auditorium. Here are a few suggestions to
make this work well.
1. Everyone who will be speaking must use a mouth mike. Everone but the
person in the classroom must use headphones rather than speakers.
2. The person in the classroom should be positioned out of the direct
sound path from the speakers -- either behind them or below them. A
highly directional microphone is desireable for use in the classroom.
3. The voice controls should be set to push-to-talk. Use a non-printing
key such as Shift or Alt. For classroom use, it is important not to
press the key when someone else is talking. Otherwise, the other speaker
will hear a return from the class room audio.
4. There is an on-screen button (lock graphic) that can lock the voice
on. If that becomes locked, voice will stay on despite the push-to-talk
setting. You unlock it by clicking on it.
5. Treat the exchange as an interview rather than a conversation. That
is, ask questions and make it clear when you are ready for the other
person to speak. Then expect other person to give an answer without
interruption. On television news, this is often done by ending with the
next speaker's name: "What's your take on this, Bob?" "Now back to you,
Jane."
6. Troubleshooting voice (These problems are often undetectable by the
person causing them. So it is polite to tell them.)
Problem: Persistent sound like bad AM radio. Persistence is caused by
OPEN MIKE. Sound is caused by mike or connection problems. Try a new
(cheap, old-fasioned, analogue) mike
Problem: Speech repeated. Caused by OPEN MIKE. Minimised by using
headphones instead of speakers.
OPEN MIKE -- Mike is inadvertently left open. Find and close. Look in
nearby speakers window. Recent speakers are at top. Current speakers
show green waves around green dot to left. Mute a person who is shown as
speaking and is not speaking. If the problem goes away, notify the
person about open mike.
Overmodulation. Sound is loud and blurred. Mike too close or too much
amplification. If mike is in normal position, check mike controls for
amplification and/or sound boost.
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