To view this page ensure that Adobe Flash Player version
11.1.0 or greater is installed.
level of sound pressure before clip or
distortion, the better.
Frequency Response - The frequency
response curve illustrates the
microphone’s ability to transform
acoustic energy into electric signals,
and whether it will do so faithfully
or will introduce colouration. With
frequency response charts, the rule of
thumb is the more linear (flat) it is, the
better. Phase Response – In terms of
microphone impulse response it is
important that microphones react to
transients in a constant way to avoid
anomalies such as phase cancellation.
This is especially important where
multiple microphones are used. It is
always wise to be aware of the phase
response of a particular microphone
and ensure any combinations of
microphones are well matched.
When is it best to use an
By far the most popular types of
lavalier microphone used in broadcast
are omnidirectional, and are ideal in a
controlled environment. With these
microphones artists are able move
around and turn their heads without
affecting the sound quality and level.
This is applicable to both lavalier and
headset microphones, except you will
have a much higher signal to noise
ratio with the headset mic because
the capsule is that much closer to the
What about Cardioid and Super
Cardioid? When should I use
these? Miniature cardioid mics are becoming
more widely used because of the style
of modern TV and Film recording. For
example, reality shows are frequently
shot in a documentary style and
often outside, while game shows
increasingly use PA systems for
audience monitoring. As the ambient
noise is that much higher, directional
microphones are favoured to acquire
more separation and better sound
quality. In very hostile environments
there is often no other alternative
than to use a highly directional Super
What are the advantages of a
headset microphone over
a lavalier mic?
The simple answer is the proximity of
the microphone to the sound source.
The closer it is the more sensitive it is.
Unlike cameras you cannot zoom a
microphone capsule – unfortunately.
Can lavalier mics and headset
mics be used on a wireless system
– if so what do I need?
Yes they can, especially if you are
using a DPA miniature capsule as all
of these are designed to be used with
both 48V phantom powering. DPA
also has a clever adapter system that
matches to all professional wireless
beltpacks. It is simply a matter of
choosing the correct adapter.
TV-BAY MAGAZINE: ISSUE 77 MAY 2013 | 59