This presentation talks about the principles in sound

1. • Sound is a type of energy made by
vibrations. When any object vibrates, it
causes movement in the air particles.
• The particles bump into the particles close
to them, which makes them vibrate too
causing them to bump into more air particles.
This movement is called sound waves.
• For example if a person is in range of the
vibrations they will hear the sound.
• When the vibrations are fast, you hear a high
note. When the vibrations are slow, it creates
a low note.
Recording Studio
Acoustics
• Recording studios are acoustically treated
• They have a short reverberation time
• the studio has to be soundproofed to create the
best acoustics.
• If you do not want there to be noises like
• traffic noise, aeroplane noise etc. You have to
isolate the recording studio this is done by
having a double wall this will separate the
room from the building.
Sound

2. Acoustical foam panels Fabric wrapped panels Fibre glass roll
Sound absorbers:
Surface properties
It is the molecules of an object.
It depends on the object or
materials in the room. They all
will have different surface
properties.
Reverberation
The definition is when
sound stops and then
the reverb starts.
Reverberation is like the
echo of sound.

3. Absorption
The two most commonly used material for acoustically treating a room is acoustic foam and specialized acoustic
fiberglass.
There are differences in cell structure and density between different acoustic foams.
Absorption is an important in a room so that it is acoustically treated properly. People have to look at the room plan
and have to look at the different corners and places to put the different materials

4. Acoustic sound diffusion keeps sound
waves from grouping, so that the sound
does not go to one spot. Diffusion is an
important of acoustical treatment,.
Diffusion
Acoustic sound diffusion keeps sound waves
from grouping, so that the sound does not go
to one spot.
Diffusion is an important part of acoustical
treatment

5. Bass Traps are acoustic energy
absorbers which are designed to
decrease low frequency .
Acoustic screen
Is a fabric-covered, double-sided screen used
in open areas such as offices to absorb noise.

6. Broadcast studios use sound isolation, They have adaptations so that
they can go live and also receive phone ins
Equipment used is
 telephone hybrid for putting telephone calls on the air,
 POTS codec for receiving remote broadcasts,
 dead air alarm for detecting unexpected silence,
 broadcast delay for dropping anything from coughs to profanity.
Sound can travel through any medium. it passes through solids
better than through air.
Sound intensity is reduced in the transition from one material to
another, from the air to a wall and back.
The amount of reduction is called the transmission loss it is
related to the density of the wall.
Any motion caused by sound hitting one side of the wall will result
in sound radiated by the other side. This effect is called coupling.
If the sound hits a resonant frequency, the wall will make a loud
noise like a drum.
Most isolation techniques are ways to reduce coupling and prevent
resonances.

7. Isolation booth
An isolation booth is a small room in a recording
studio, which is soundproofed to keep out external
sounds and keep in the internal sounds,
it is designed for having a lesser amount of diffused
reflections from walls to make sure there is good
sounds created in a room.
The things that can be in a isolation booth are
• A drummer,
• vocalist,
• guitar
• microphones,
A professional recording studio has a control room, a
large live room, and one or more small isolation
booths.
All rooms are soundproofed. They will have a double
layer wall. There is dead space and insulation in-
between the two walls, forming a room-within-a-
room.

8. Recording studios have three rooms:
• the studio , where the sound for the recording is created it can also be called the live room
• the control room, where the sound from the studio is recorded and manipulated,
• the machine room, where noisier equipment that may interfere with the recording process is
kept.
• Recording studios are designed around acoustics, to create a set of spaces with the acoustical
properties required for recording sound. This will happen through acoustic room treatment.
• They use absorption and diffusion materials on the surfaces of the room,
• soundproofing prevents sound from leaving a room. A recording studio includes different
rooms, such as a vocal booth, it is a small room designed for voices.