Main Points
▶ In radio, in particular, when positioning a microphone in
front of a seated or standing performer it is important to
keep excessive sound that is refl ected from surfaces, furniture,
and equipment from reaching the mic to preserve the
medium’s sonic intimacy.
▶ To reduce unwanted sounds such as popping and sibilance,
use a mic with a windscreen or pop fi lter or speak within
the pickup pattern across the mic, or both.
▶ The closer a mic is placed to a sound source, the closer to
the audience the sound source is perceived to be; the farther
a mic is placed from a sound source, the farther from
the audience the sound source is perceived to be.
▶ In disc jockey, interview, and panel programs, the participants
should sound as though they are coming from the
front and center of the aural space. With more than one
participant, using individual microphones, the loudness
levels for the participants must be similar if the sound is to
be perceived as coming from the front and center of the
aural space.
▶ Dramatizations on radio involve creating a “theater of
the mind,” using sound to impel the listener to “see” the
action.
▶ To create perspective using one microphone in radio
dramatization, performers are positioned at appropriate
distances relative to the mic and to one another, as the
dramatic action dictates.
▶ Using the multimicrophone technique in radio dramatization,
perspective is created in the postproduction mix.
▶ For stereo radio dramatizations, coincident or near-coincident
microphone arrays (also called X-Y miking) are usually
employed. Coincident miking positions two microphones,
usually directional (or a stereo mic), in virtually the same
space with their diaphragms located vertically on the same
axis. Near-coincident miking positions two mics, usually
directional, horizontally on the same plane, angled a few
inches apart.
▶ A main difference and advantage of surround-sound miking
of radio dramatizations is being able to position performers
much as they would be on a stage and recording
them from those perspectives or recording them conventionally
and creating those perspectives in postproduction.
▶ In radio, microphones can be placed anywhere without
regard for appearance so long as the participants are comfortable
and the mics do not get in their way. If the radio
program is also televised, some care for appearance should
be taken. In television, if a mic is not in the picture, it must
be positioned close enough to the performer so that the
sound is on-mic.
▶ Generally, for optimal sound pickup the recommended
placement for a mini-mic is in the area of the performer’s
sternum, about 6 to 8 inches below the chin.
▶ In television a desk mic is often used as a prop. If the desk
mic is live, make sure it does not block the performer’s
face, interfere with the performer’s frontal working space,
or pick up studio noises.
▶ The handheld mic allows the host to control audience
questioning and mic-to-source distance and, like the desk
mic, helps generate a closer psychological rapport with
the audience.
▶ The boom microphone, like the mini-mic hidden under
clothing, is used when mics must be out of the picture.
Often one boom mic covers more than one performer.
T-rovide adequate sound pickup, and to move the boom at
the right time to the right place, the boom operator must
anticipate when one performer is about to stop talking and
another is about to start.
▶ Different techniques are used in controlling levels, leakage,
and feedback of mic feeds from multiple sound sources:
following the three-to-one rule, moderate limiting or
compression, noise gating, or using an automatic microphone
mixer.
▶ If an audience is present, it must be miked to achieve an
overall sound blend and to prevent one voice or group of
voices from dominating.
▶ Increasing audience laughter or applause, or both, by
using recorded laughter or applause tracks adds to a
program’s spontaneity and excitement. But these effects
should not be so loud as to compete with the sound of the
program participants.
▶ For stereo, audience sound is usually panned left-to-right
with a lower level in the center. Or it is placed left and right
of center, where the participants’ audio is placed. For surround
sound, feeding audience mics to the rear channels
provides a spacious effect to the overall program audio.
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