Roland VR-120HD Direct Streaming AV Mixer - Manual (Page 50)

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Audio Operations
Suppressing Echo in a Web Conference System
(Echo Canceller)
In a conversation using the speaker and mic of a web conference system,
an echo can occur when the other person’s voice heard through the
speaker is picked up by the mic and sent back to the other person.
When you use the echo canceller, the echo component is removed from
the voice that is picked up by a mic connected to the VR-120HD, so that
only your own voice is sent to the other party.
* This only works on the input audio from the AUDIO IN 1, 2 jacks.
Parameter Explanation
Echo Canceller Turns the echo canceller on/off.
Depth Adjusts the depth of the echo canceller.
MEMO
¹ The echo canceller supports rooms that are approximately 20 m²
(215 sq ft).
¹ If your own voice returns to you as an echo, you’ll need the other
party to make echo canceller settings.
¹ The echo canceller works based on audio input from the USB In
port.
Reducing Acoustic Feedback (Anti-Feedback)
Here’s how to reduce the acoustic feedback that can occur when a mic is
brought near a speaker.
* This only works on the input audio from the AUDIO IN 1, 2 jacks.
Parameter Explanation
Anti-Feedback Turns the anti-feedback on/off.
Changing the Character of a Voice
(Voice Changer)
Here’s how to modify the pitch or character of the voice that’s input from
a mic.
You can create transformations such as “from a female to a male voice”,
“from a male to a female voice”, or “robot voice”.
* This only works on the input audio from the AUDIO IN 1, 2 jacks.
Parameter Explanation
Voice Changer Turns the voice changer on/off.
Pitch
Adjusts the pitch of the voice in semitone steps.
A setting of “0” is the original pitch.
Formant
Adjusts the character (formant) of the voice.
Settings in the negative (–) direction produce
a more masculine vocal character, and settings
in the positive (+) direction produce a more
feminine vocal character. A setting of “0” is the
original voice.
Robot
When this is “ON”, the voice is held at a
fixed pitch, creating a mechanical robot-like
impression.
Mix
Adjusts the balance between the unprocessed
voice (0) and the voice processed by the effect
(100).
MEMO
You can assign the function to an AUDIO EFFECT button to switch the
voice changer on/off (p. 90).
Correcting a Time Difference Between Video
and Audio (Delay)
If there is a timing discrepancy between the video and audio, you can
correct the output timing by delaying the input audio.
Parameter Explanation
Delay Adjusts the delay time of the audio.