Basic Sound

the threshold of hearing is?

0 dB

In describing sound wave properties, the inverse square law states that the fall off of sound amplitude is related to distance. The rule is, that for twice the distance the size of the disturbance is ________?

1/4

the frequency range of audible sound (decibility) is ________?

20 Hz to 20k Hz

the highest frequency that can be reproduced for a digital audio file whose sampling rate is 48kHz is ?

24 kHz

Who is responsible for slating each shot?

2nd AC

When is the best time to record room tone?

30 seconds after the AD calls "roll sound" and before the AD calls "roll camera"

An audio file that is one minute in length, mono, at 48kHz/16 bit is about how big?

6 megabytes

On a mic, a "pad" switch does what?

Attenuates the incoming signal

Condenser mics get their power from?

Battery or Phantom Power

transducers ________?

Convert sound energy into electrical energy OR convert electrical energy into sound energy

frame accurate sound effects are called ?

Hard

___________ are softer, higher frequencies superimposed

Harmonies

Which boomed mic pattern in best for interiors?

Hypercardiod

the process of transferring a mixed soundtrack to video is called ?

Layback

an audio processor, routinely used in production mixers and recorders, that prevents signals from passing a certain threshold is called a ____?

Limiter

In days of old, dialogue replacement was accomplished by physically cutting short sections of film to form a loop and then have the actors repeat the dialogue while watching the film. This process was called ______?

Looping

A stereo mixed tracked with the dialogue and narration muted is called ?

M&E

Which mic pattern has the most consistent off-axis frequency response?

Omni

Premixing all of the checkerboarded tracks down to just a few in number is called ?

Pre-mix

In a Parametric EQ, the control that narrows or widens the bandwidth is called the ?

Q

On a mic, a "roll-off" switch does what?

Reduces the low frequencies

Which mic pattern has the most colored off-axis frequency response?

Shotgun

in video and television, mixing is often referred to as ?

Sweetening

what is used to boost a microphone signal?

a pre-amplifier

The directional pattern of a ribbon microphone is?

bidirectional

which 2 mic schemes are used in M/S stereo miking schemes?

cardiod and bidirectional

A processor that controls the sibilance of speech is called a(n) ______?

de-esser

Amplitude range is measured in ?

decibels

a dynamic mic:

does not need phantom power, has a magnet, is not delicate

the opposite of a compressor is a(n) ____?

expander

True or False: all digital audio at Drexel FMTV is 48 kHz/8 bit

false- 48 kHz/ 24 bit

the length of the sound wave (wavelength) measured in Hertz (Hz) is a measurement of it's ?

frequency

the basic back and forth of a waveform which carries the most energy, and is what we hear as the pitch of a sound is called it's ?

fundamental

Male XLR connecter:

has three prongs ***** the audio*

The best filter type used to remove excessive room noise, often concentrated at low frequencies, is a _____?

high pass

for a tail slate:

hold the slate upside down

For an MOS shot slate:

hold the slate with the sticks close

1000 cycles per second is a ___________?

kHz

which has the higher output level?

mic level, line level -10 dB, line level +4 dB

a per use, licensed track of prerecorded library music is often called ?

needle drop

A condenser mic:

needs phantom power, has no magnet, is delicate

Lav mics are generally which pattern?

omni

AES digital audio i/o:

ports connect to the XLR cables we use (so just know what the ends of those connectors look like)

the number one priority for production sound is ?

recording usable dialogue

Which one is NOT the correct term for final mixing?

rerecording, mixdown, checkerboarding, dubbing

In digital audio, the number of samples taken per second is called it's ?

sample rate

Why is it important to hold the slate for a couple seconds after slating?

so the numbers can be read clearly

why should we avoid using a shotgun mic close to the ceiling?

the pattern pics up audio behind it

In audio, clipping is ?

the peak of a waveform being cut

In production sound, what is a mixer?

the person doing the recording and the console where mics are connected

dynamic range is ?

the range in dB from the noise floor to overload

Which control parameter is NOT typical on a Compressor?

threshold, ratio, output, sweetener

which one is NOT a description of Amplitude?

timbre (levels, volume, and sound pressure all describe amplitude)