RIM 3010- Final:Test 3

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what is the microphone dBu level?

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what is the microphone dBu level?

-60 dBu

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Professional line level is?

+4 dBu

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Gain Structure is?

The audio levels at different points in the signal flow

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Signal Flow

The path the audio takes through the audio chain

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The function of the pan pot could be to?

Vary the relative gain being being fed to both slides of a set of speakers.

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An audio bus is a?

A common signal path

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A Pot is?

A potentiometer

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A fold back system..........?

Routes the signal to headphone monitors

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AFL and PFL are associated with the console?

Solo system

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The location where all devices in the studio can be interconnected is called the?

Patch bay or Jack field

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Look at symbol for an amplifier

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Look at symbol for "a switch"

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Given a console that is marketed as being a 48 X 8 X 2 console, how many inputs does the console have?

48

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The layout of analog patch bays typically has ........... over ...........

Outputs, inputs

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What is the recording console's first gain stage?

Microphone preamp

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This is the technical term (wiring term) used to describe a patch point that automatically connects an output to an input without using patch cables?

Normalled

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This type of cable wiring is used in professional audio systems because it helps reject noise

balanced

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When creating a headphone mix, you want your auxiliary sends to be set as.............. so that they are independent of the console fader.

pre-fader

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You would use this connection point on the console to add an external compressor to the signal chain.

Insert

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The most common professional microphone connector is called a?

XLR plug

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balanced inputs have what advantage over unbalanced inputs?

CMR noise rejection

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To connect an electric guitar directly into a console preamplifier you need a?

DI Box

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An unbalanced Cable is

high impedance

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Most budget mixers as well as home stereos have this kind of EQ for the treble and bass

Shelving

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Filters are usually identified by?

Cut of frequency

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All analog EQ's and many digital EQ's create........ when used?

Phase Shift

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Parametric means that these qualities on an EQ are variable?

Level, frequency and "Q"

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What control on a compressor tells it how much to attenuate the output?

Compression ratio

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The side chain input on a compressor might also be called the?

Key input

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An expander is normally used in the studio to?

Control noise and leakage

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A compression ratio is a ratio of?

input to output

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A threshold control of a compressor/limiter?

Sets the dB level above which compression will begin to be applied

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If a compressor threshold is set at 0 dB and the compression ratio at 2:1 an input signal os +12 dB would produce and output at?

+6 dB

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A time processor effect replicating an instrument playing the same part over again is known as?

ADT

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Which of the following best describes the flanging effect?

A shifting comb filter with harmonically related null points.

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Spring reverb is known for its?

"Twangy", sound

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An echo chamber?

Creates natural sounding reverberation

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The decay time of a reverb is measured......

As how long it takes the initial sound to decay 60 dB

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This type of reverb device uses an electromechanical transducer to create a vibration in a large piece of sheet metal.

plate

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What brought about the need for developing and applying artificial reverb?

Close mixing and multi-tracking

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The more reverb effect used on an instrument signal.......

The further away that instrument sounds

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Review: Two prong XLR connector:

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Low impedance

low voltage and potentially high current

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High impedance

low current and potentially high voltage

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A connector used on microphones unbalanced

XLR connectors

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Review: 1/4" TRS connector (What it looks like)

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Review: TT- "Tiny Telephone" connector (What it looks like)

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Review: 1/4" phone or TS connector (What it looks like)

<p></p>
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Review: What is slope, (6 dB per octave on graph)

for each octave (doubling of frequency) above 4000 Hz, the level of frequencies will be diminished by an additional 6 dB.

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Voltage

The amount of work required in moving one \n electric charge from one point to the other.

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Current

The amount of charge passing through the \n circuit in unit time.

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Resistance

The opposition offered by the flow of \n current in the circuit.

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Power:

The product of work done and the number of \n electrons passing through the circuit in unit time. Watt \n is the unit

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the 4 basic units of electricity are

volts, amps, \n ohms, and watts.

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What is the formula for power

10log (P1/P2)

1 Watt to 2 Watts

10 x log 2W/1W

10 x log 2

10 x .3

3

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a doubling of power yields a

3 dB increase

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What is the formula for Voltage

20log (V1/V2)

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double of voltage (pressure)

6 dB increase

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Doubling the distance

DECREASES the Sound \n Pressure Level by 6 dB

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Halving the distance

INCREASES the Sound \n Pressure Level by 6 dB.

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dBm

Power Reference

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dBu

Voltage Reference

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dBFS

Digital Audio

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dB SPL

Acoustical sound pressure level

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Analogs

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Digital

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Nyquist frequency

(highest frequency \n to be recorded

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The most common system for analog to digital conversion

PCM - Pulse Code Modulation

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Sampling frequency determines

Bandwidth

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Bit Depth determines

Dynamic Range

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Violation of Nyquist’s law

(having audio \n frequencies above ½ the sampling frequency) \n results in the creation of alias waves.

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Time interval names

Nyquist rate, sampling frequency, sampling rate

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What is used to prevent incorrect sampling of frequencies

Anti-Aliasing Filter(High cut filter)

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What is the analog version of anti-aliasing filter

Brick wall analog filter

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What is the process of converting analog to digital 0101010001

Quantization

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What is digital word length

Bit Depth

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Binary numbers

01001011

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Formula to find The number of bits per second or bit rate

Bit depth multiplied by the sampling frequency

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What is a Rounding error in bits

Quantizing error (Noise)

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Large errors are concealed using

Interpolation

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If an error cants be corrected what happens

It will be concealed

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Jitter

Error in timing of the sampling

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How can you reduce a jitter

The use of a master time clock

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digital audio interface will provide two or more \n inputs and outputs, in analog and/or digital (

S/PDIF, \n AES/EBU, ADAT, TOSlink, TDIF, etc.) formats.

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