Zusammenfassung der Ressource
Music Tech
Assessment
- Noise Gate
- Will trim a signal
within a threshold so
that you will only get
the desired signal.
(When an input signal
falls below the
threshold level, the
gate will mute the
signal)
- Threshold-
When the
signal falls
below the
threshold, the
gate mutes
the signal
- Release- The
release controls the
speed of which the
gate closes once the
signal falls below
the threshold level
- Range - sets the signal
allowed to pass through the
gate (even when closed)
- Hold Time -
stops the gate
reaching its
release phase
too soon
- Attack- Control the
time the gate takes to
fully open (fast attack
= 10-50 micro seconds,
a slow attack = 10-50
milliseconds). If the
gate opens too
quickly, you may get a
clicking noise.
- Compression
- A compressor essentially makes
sure that all the notes
throughout the song are roughly
the same dB so that we do not
get sudden random outbursts of
sound within a song
- Threshold- how loud the
signal has to be before
compression takes place
- Ratio- How much
compression is applied.
E.G if the ratio is set to 6:1,
the input signal has to
cross the threshold by
6dB, for the output level
to be decreased by 1dB
- Attack- how
quickly the
compressor
starts to work
- Release-How soon
after the signal
dips below the
threshold the
compressor stops
- Knee- how the
compressor reacts
to signals once the
threshold is passed.
- Make-up gain-
allows you to
boost the
compressed signal
to make it louder.
- EQ
- EQ's main purpose is to
manipulate tone,
boosting/cutting
frequencies to make
something sound better.
Instruments have differing
EQ frequencies (Bass has
lower frequencies, electric
guitar has higher
frequencies_
- We hear between
20Hz up to 20kHz
- Filters- A high pass filter, low
pass filter or shelf filter can
be modified by using a
bandwidth or Q Controls to
allow the filter width to be
changed. A high pass filter
will be used to remove high
end frequencies, a low pass
filter will be used to remove
low end frequencies.
Sweepable controls allow the
filter centre frequency to be
changed.
- Frequencies can
be completely
cut if thinned
and then muted,
possibly
removing any
unwanted noises
such as a ringing
noise from a
drum kit.
- Reverb
- Reverb is
essentially the
sound created when
a sound is reflected
from a wall (Acting
like an echo)
- These reverbs
can be made
naturally by
playing in
various
shaped/sizes of
rooms to create
a natural reverb,
or made in a
digital
reverberator
that will create
an artificial
reverb effect.
- The time before
a reverb is called
a pre-delay, then
the echo will
take place and
will gradually
decay (die out)
over time
- A reverb effect can be
described as wet or dry.
If the reverb isn't
particularly prominent,
then it will be described
as dry. If a reverb stands
out, then it will be
described as wet.
- Microphone positions
- 4 inches from
the grille cloth
in front of the
speaker
cone-Natural
and well
balanced
- 1 inch from
the grille
cloth at the
centre of the
cone - Bassy
- Off centre
from the
speaker cone -
Dull or mellow
- 3 feet from the
centre of the
cone - thin,
reduced bass
- When recording an acoustic
guitar, it is recommended to
have a microphone 1/3rd up the
neck and over the bridge when
stereo recording, or 13th fret
when mono recording.
- When
recording a
piano, it is
best to place
one
microphone
over the bass
strings, and
one over the
treble.