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180- Final Exam
Oh sweet lord.
200
Music
Undergraduate 1
04/28/2012

Additional Music Flashcards

 


 

Cards

Term
31 Hz Pink Noise
Definition
distant waterfall
Term
63 Hz Pink Noise
Definition
thunderous wind, close waterfall
Term
125 Hz Pink Noise
Definition
distant jet, distant thunder, warehouse sliding door
Term
250 Hz Pink Noise
Definition
close jet or inside airliner
Term
500 Hz Pink Noise
Definition
jet taking off, distant roller coaster
Term
1 kHz Pink Noise
Definition
stadium crowd, car on wet road, vacuum cleaner
Term
2 kHz Pink Noise
Definition
car wash water sprayer
Term
4 kHz Pink Noise
Definition
air hose, pouring sand
Term
8 kHz Pink Noise
Definition
sizzling grill, escaping steam
Term
16 kHz Pink Noise
Definition
tropical rain, water sprinkler, shower
Term
31 Hz Music
Definition
Low Kick, Thump
Term
63 Hz Music
Definition
"Boomy" end of mix
Term
125 Hz Music
Definition
Low bass
Term
250 Hz Music
Definition
Instrument Fundamentals, High Bass, Low acoustic Guitar, low snare
Term
500 Hz Music
Definition
1st instrument overtones (instrument boosted, but not naturally)
Term
1 kHz Music
Definition
Mids, nasally, telephoney
Term
2 kHz Music
Definition
brightness, presence, instrument character
Term
4 kHz Music
Definition
brittle, edgy, "rattles my fillings"
Term
8 kHz Music
Definition
crispness and clarity
Term
16 kHz Music
Definition
"air," high cymbals, acoustic guitar pick scratch, shakers
Term
MIDI Qualities as compared to Digital Audio
Definition

Performance Event Data

Sound Quality Depends on External Sources

Flexible Data Structure

Parts can be individually altered

small storage demands

playback requires synthesizer

limited reproduction of nuances

Term
Digital Audio Qualities (as compared to MIDI)
Definition
Sampled-sound data Sound Quality inherent in data inflexible data structure parts not easily separated large storage demands playback requires D/A hardware perfect reproduction of nuances
Term
Simple Project Studio Setup
Definition
Computer goes to MIDI Interface and Audio Interface
Audio goes to mixer (which is connected to the sound module)
MIDI Interface goes to MIDI Controller and to Sound Module
Term
Typical Production Process
Definition
composition
MIDI sequencing
Record MIDI sequences to digital tracks
add live performance tracks
mix
master
export/encode
Term
Order of History of Music Tech
Definition

Edison Phonograph

Player Piano

Thermin

Magnetic Tape Recording

LP Record

Moog Commercial Synthesizer

Switched on Back

Term
Memory Help Music History
Definition
Every Pianist There Made Me Switch Back
Term
Edidson Phonograph
Definition
1877
Term
Player Piano
Definition
1900
Term
Theremin
Definition
1920
Term
Magnetic Tape Recording
Definition
1935
Term
Moog Commercial Synthesizer
Definition
1960
Term
Switched on Bach
Definition
1968
Term
Direct to Disk Recording***
Definition
Higher Quality with no degradation
random access, more efficient production
virtually unlimited tracks
inexpensive, reusable, portable media
Term
Digital Audio Workstation!
Definition
Direct to Disk Recording***
Graphical Editing Interface
Digital Signal Processing
Share sessions over digital networks
affordable, cost effective recording solution
facilitates integration of visual elements
easy export/ conversion to alternate digital formats
Term
ProTools Specs
Definition
Audio
MIDI
Recording/Mixing
Term
Audio ProTools Spec
Definition
Digital Samples from 16bit 44kHz up to 24 bit 192 kHz
up to 192 playback tracks, unlimited virtual tracks
digital real editing
Term
MIDI protools spec
Definition
256 midi tracks
event performance data
external sound modules or internal sound synths
Term
Recording mixing protools spec
Definition
complete mix control over signal routing, effects processing, dynamic faders, and automation control
store entire session for instant recall
share sessions with other users
Term
ProTools Edit Modes
Definition
Shuffle Slip Spot Grid
Term
Shuffle Mode
Definition
changes you make effect other regions on the track
Term
Slip Mode
Definition
changes you make do not effect other regions on the track
Term
Spot Mode
Definition
places regions at precise locations
Term
Grid Mode
Definition
Regions Snap to nearest time increment specified by Grid
Term
ProTools Track Types
Definition
Audio
MIDI
Auxiliary Input
Instrument
Master Fader
Term
Audio Track
Definition
import/ record/ edit of digital audio
Term
MIDI track
Definition
import/ record/ edit of MIDI data
Term
Auxiliary Input
Definition
used for audio routing, such as effects send or a sub-mix
Term
Instrument track
Definition
combines function of MIDI and aux input into single track
Term
master fader
Definition
controls overall level of the audio tracks
Term
Sound Fundamentals
Definition
Series of compressions and rarefactions
Term
waveform
Definition
shape of the sound; from simple sine wave to jagged and complex
Term
amplitude
Definition
height of wave; larger = higher volume
Term
Frequency
Definition
cycles completed per second (hz); higher it is the higher the pitch!

Children hear between 20Hz and 20kHz
Term
Nyquist Theorem
Definition
2x the samples per cycle

20 kHz frequency= 40kHz sample rate

higher frequencies require higher sample rates for accurate reproduction (avoids aliasing)
Term
Sample Rate
Definition
discrete snapshots
higher the sample rate= better approximation of original sample
Term
Bit Depth
Definition
useful dynamic range of music/speech is 40- 105 db = 65 db.
Term
Quantization
Definition
each sample assigned it's closest amplitude value
Term
Bits
Definition
4 bit= 16 different numeric amplitude values
Term
Dynamic Range
Definition
8 bit = 48 db
16 bit= 96 db
24 bit = 144 db
Term
Sampling and Bit Depth Tradeoffs
Definition
Higher sample rate and greater bit depth improve audio quality but at a cost:
Larger sample rate = more data
Higher bit depth = more bits
Term
What does higher sample rates and bit depths equate to
Definition
larger files and session sizes
greater storage requirements
higher system performance requirements
Term
1 min of audio storage sizes:
Definition
16bit/48kHz stereo : 11.4 MB

24bit/28kHz stereo : 17 MB
Term
Files
Definition
compilation of 16 bit words
Term
8bit 11khz mono audio file
Definition
11KB/sec
Term
8 bit 22khz mono audio file
Definition
22 KB/sec
Term
8 bit 11khz stereo file
Definition
22KB/sec
Term
16 bit 22khz mono audio file
Definition
44 KB/sec
Term
16 bit 22kHz stereo file
Definition
88KB/sec
Term
16 bit, 44khz, stereo audio file,
Definition
176 KB/sec -> Redbook Audio CD
Term
three types of microphones
Definition
dynamic condensor and ribbon
Term
dynamic mike
Definition
rougher response
rugged and reliable
not sensitive to environment
handle high volume w/o distortion
good for guitars/drums/some live vocals
preferred for live events
Term
condensor mike
Definition
wide, smooth frequency response
detailed sound, especially highs
great low frequency response
sensitive to transients (but you have to be careful)
good for acoustic instruments, studio vocals
delicate
can be mini
Term
ribbon mike
Definition
warm, smooth quality
delicate
good alternative mike to complement condensor mike
Term
Controls of the Mixer
Definition
faders
pan
trim/gain
master fader
aux sends
Term
inputs
Definition
audio signal going in
Term
outputs
Definition
audio signal going out
Term
inserts
Definition
allows inserting of device directly into signal path
Term
sends (aux send)
Definition
allows sending of signal to external device
Term
returns (aux return)
Definition
allows return of signal from send to mixer
Term
Why edit music?
Definition
conform to visuals, timing restraints
seamless looping or length extension
creates "alt- mixes" without having to go back to mix stage
Term
goals of music editing
Definition
not an itunes sample!

capture essence of original
get to hook or melody quickly
timing is critical; no room for overshoot
natural beginning/natural ending
maintain energy and momentum to very end
Term
oscillators
Definition
generate signal, usually you can choose the wave type

in a synth
Term
filters
Definition
remove unwanted frequencies much like an equalizer (VDF filter in Korg)

in a synth
Term
envelope generators
Definition
in a synth

create the attack and release of the sound (VDA- variable digital amplifier)
Term
LFO
Definition
low frequency oscillator
creates vibrato
Term
sound envelope
Definition
adsr curve
Term
adsr
Definition
attack decay sustain release

sound envelope
Term
polyphonic
Definition
multiple concurrent voices (notes)
Term
monophonic
Definition
single voice (note) at a time
Term
multi-timbral
Definition
receives unique data on each channel, allowing it to function as multiple instruments
Term
MIDI stands for
Definition
musical instrument digital interface
Term
What does midi do?
Definition
communicates performance data between computers, synthesizers, drum machines, controllers, digital mixers, processors, etc

even used for live performance control of multiple instrument settings, external devices, lighting, etc
Term
Devices connected via midi cables
Definition
5 pin "DIN"
Term
midi in
Definition
from controller
Term
midi out
Definition
to sound module
Term
midi thru
Definition
passes midi data to other devices w/o affecting it
Term
How many channels per port?
Definition
16!!! interfaces can have multiple ports
Term
MIDI Event Examples
Definition
note on- note off
velocity
key pressure (after touch)
program change
pitch bend
controllers
song position
sys-ex
Term
Typical MIDI Set Up (begin with keyboard)
Definition
MIDI Out of piano to MIDI In of sequencer
Out of sequencer to midi in of sound module 1
midi thru of sound module 1 to midi in of sm 2
midi thru of sm 2 to midi in of sm 3
midi thru of sm 3 to midi in of drum machine!
Term
General MIDI or GM is what?
Definition
specification for synthesizers which imposes several requirements beyond the more abstract MIDI standard. it attaches certain interpretations to many parameters and control messages which were left unspecified in MIDI, such as defining instrument sounds for each of the 128 program numbers
Term
GM allows what?
Definition
allows portability of MIDI files across different platforms while retaining fundamental essence of the performance!!!
Term
What else ab GM?
Definition
24 voices to be active at the same time
responds to note velocity
support all 16 channels simultaneously
supports polyphony!
Term
LP Record
Definition
1948
Term
First DAW
Definition
1978
Term
MIDI specs in what year?
Definition
83
Term
ProTools launched in
Definition
91
Term
To Find how much data a time is in MB?
Definition
time * 60sec/min = seconds

seconds * 176 KB/sec (because of 16 44) = KB

1024 KB = 1 MB

KB * (1 MB/ 1024 KB) = Data in MB
Term
How a dynamic mic works
Definition
coil of wire attached to a diaphragm suspended in a magnetic field

sound vibrates the diaphragm, coil vibrates, generates electric signal
Term
how a ribbon mic works
Definition
thin metal foil/ribbon suspended in a magnetic field
sound waves vibrate ribbon and generate electric signal
Term
how a condensor mic works
Definition
conductive diaphragm and metal back plate, charged with static electricity

sound waves vibrate diaphragm, varies space between plates, changing capacitance, which can be detected and translated into electric signal
Term
Two types of condensor mic
Definition
true condensor

electret
Term
what if my condensor mic is not working?! *gasp*
Definition
requires battery of phantom power (48 volts DC)
Term
what is synthesis?
Definition
a process which combines together two or more pre-existing elements resulting in the formation of something new
Term
types of synthesis
Definition
analog
physical modeling
Term
additive synthesis
Definition
combines sine waves
Term
subtractive synthesis
Definition
filter sawtooth waves
Term
what if i want a basic midi/daw set up?
Definition
basic daw set up with a cord from the midi controller to audio mixer
Term
GM Advantages
Definition
portability across multiple platforms
small file size
allows for real time control
allows for collaborative composition
facilitates production cycle during early "exploration" phase
Term
MIDI setup picture
Definition
[image]
Term
studio setup picture
Definition
[image]
Term
Storage Req for 16 bit 44 kHz. (in MB)
Definition
10 MB
Term
Storage Req. for 24 bit 48 kHz (in MB)
Definition
16.4 MB
Term
Storage Req for 16 bit 96 kHz
Definition
22 MB
Term
Storage Req for 24 bit 192 kHz
Definition
66 MB
Term
8 Bit Dynamic Range
Definition
48 dB
Term
16 bit Dynamic Range
Definition
96 dB
Term
24 bit Dynamic Range
Definition
144 dB
Term
Amplitude signal processors
Definition
Compressors, Limiters, Expanders, Noise Gates...
Term
Pitch or Frequency signal processors
Definition
EQ, Pitch Shifters, Harmonizers
Term
Time Signal Processors
Definition
Reverb, Delay, Chorus, Flangers
Term
Compressors are what and what do they do?
Definition
an automatic level control

raises low levels, reduces highest
keeps the average level more uniform and consistent
prevents clipping
makes vocals easier to hear
drums sound fatter
bass/guitars, more sustain
Term
Compression Ratio
Definition
ratio of change of input level to output level 2-1 ratio: every 2dB change in input = 1dB change in output
Term
Threshold
Definition
input level (dB) that compression takes effect. Higher threshold, less of signal affected
Term
Attack time
Definition
time this compressor takes to react to input signal

long one- larger peaks may pass before gain reduction

short one- compressor may miss peak
Term
Release Time
Definition
time it takes for compressor to return to unity after signal has past


short one responds well to music dynamics
Term
Input/Output
Definition
input allows reduction of hot input signals; output allows for "makeup gain" (making up for gain reduction of compressor)
Term
Limiter
Definition
keeps peak signals from exceeding preset level; compression ratio: 10-1 or higher; fast attack; high threshold
Term
Noise Gate (expander)
Definition
on-off switch that reduces noise during pauses

reduces gain when signal falls below preset threshold
Term
De-esser
Definition
compresses only high midrange frequencies that contain "S" or "T" etc.

mainly used on vox
Term
Sidechain
Definition
used to trigger one channel off another

djs use this
Term
EQ process frequencies:
Definition
process of enhancing desired frequencies and reducing unwanted frequencies

helps mixes to be cleaner, reduce "mud", give each instrument their place in the audio spectrum

reduce unwanted noises such as hums or room noise
Term
Low-Pass Filter
Definition
graph looks flat down right
Term
High Pass Filter
Definition
up left, flat.
Term
Band Pass Filter
Definition
Up left, flat, down right
Term
band-stop (notch) filter
Definition
valley
Term
Reverb
Definition
space adjuster; adds sense of room acoustics, ambience or environment

creates natural environment since most music is experienced in reflective space
Term
Type or Algorithm (reverb parameter)
Definition
simulate reverb pattern of specific room
Term
Decay (reverb parameter)
Definition
duration of reverb effect
Term
Pre-Delay (reverb parameter)
Definition
early reflections
Term
HF Cut or Damping (reverb parameter)
Definition
sets amount of room absorption
Term
Diffusion (reverb parameter)
Definition
sets amount of room scattering
Term
Mix (reverb parameter)
Definition
ratio of direct sound to reverb sound
Term
Echo Parameters are:
Definition
Delay
Mix
Feedback
Depth and Rate
Term
Delay (echo parameter)
Definition
time between original sound and echo
Term
Mix (echo parameter)
Definition
ratio of original and effected sound
Term
Feedback (echo parameter)
Definition
number of repetitions
Term
Depth and Rate (echo parameter)
Definition
modulation for chorus effect
Term
Chorus
Definition
a short delay time (15 to 35 ms) is modulated causing delayed signal to bend up and down in pitch
Term
Flanging
Definition
Direct and delayed signals are combined with slight, modulating delay (0-20ms) causing phase interference
Term
General Applications for Ableton
Definition
live performance, real time triggering of audio clips, sketching out musical ideas for alternate arrangements

warping audio
key triggers
Term
Monitoring System
Definition
monitor mixer
power amps
speakers
listening environment
Term
Speakers:
Definition
flat frequency response is desirable

+/- 4dB between 40Hz and 15kHz
Term
Low distortion
Definition
total harmonic distortion under 3% (THD)
Term
Sensitivity
Definition
higher is better
High: 93 dB/W/m;
low: 85 dB/W/m
Term
Speaker Placement
Definition
Equilateral triangle with the proper height.
Term
Power Amp
Definition
too much power better than too little

distortion: under .05% at full power

short thick conductor (16 gauge or less) cables to connect
Term
Unbalanced Cables
Definition
single conductor surrounded by a shield; 1/4" TS- Phone Jack; RCA connector
Term
Balanced Cables
Definition
two conductors surrounded by shield

Rejects hum better, especially over long runs.

expensive; 3pin XLR; 1/4" TRS (tip ring sleeve)
Term
Consumer audio cable
Definition
rca connector
Term
Guitar Cable
Definition
1/4 " TS
Term
Effect Insert Cable
Definition
1/4" TRS -> Split 1/4 " TS
Term
Mic Cable
Definition
balanced XLR
Term
MIDI Cable
Definition
5 pin DIN Connector
Term
Speaker Cable
Definition
2 conductor "lamp/zip" cord
Term
S/PDIF Cable
Definition
digital audio signal over analog video cable with RCA jacks (consumer version) dual channel over single cable
Term
AES/EBU Cable
Definition
digital audio signal over analog XLR cable (professional version) dual channel over single cable
Term
WAV format
Definition
Standard PC format, now widely used for proaudio. PCM (pulse code modulated), usually 16bit, 44-48khz, but supports higher bit depths and sample rates.

(uncompressed)
Term
AIFF format
Definition

Audio Interchange File Format; standard Mac audio file format.  Slowly being phased out.

Term
SDII format
Definition
Sound Designer II; Digidesign proprietary format. 16bit, 44-48khz, mono/stereo, lossless. Formerly the primary sound file format for Mac based PT systems, now not widely used.

(uncompressed)
Term
RAW format
Definition
Also a PCM format but with no header information. Rarely used except for dedicated applications where file format is predetermined.

(uncompressed)
Term
BWF format
Definition
Broadcast Wave Format; developed by European Broadcast Union as a successor to WAV. Used primarily for multi-track TV and Film production in Europe. Allows metadata in header.

(uncompressed)
Term
MP3 format
Definition
MPEG Level 1 Layer-3. Variable compression rates, usually 10:1 or higher. Most prevalent internet audio format.

compressed
Term
WMA Format
Definition
Windows Media Audio. Comparable to MP3 in quality, used for both streaming and download. Includes DRM (Digital Rights Management) functionality and lossless version

compressed
Term
RA/RM Format
Definition
Real Audio/Real Media. Similar to WMA in quality and function. Once the internet darling, now being eclipsed by AAC/WMA

compressed
Term
MPEG-4 Audio Format
Definition
Supports different codecs, but AAC most common. Based on Quicktime, adopted by iTunes, high quality and DRM, now one of most widely used formats (MP4/M4A)

compressed
Term
AU Format
Definition
Standard audio file format used on Unix, Sun and Java applications. Can be uncompressed but usually compressed using u-law, a-law, G729

compressed
Term
LPCM Compression Codec
Definition
Linear Pulse Code Modulated. Uncompressed, lossless. Sample rates of 48-96kHz, 16-24 bits.
Term
Dolby Digital Compression Codec
Definition
AC3. Lossy, multi-channel digital audio. Output bitrate from 64kbps up to 448kbps, typically 5.1. Used on almost all commercial DVD releases.
Term
MPEG 1 and MPEG 2 Compression Codec
Definition
Multichannel, lossy compression, bitrate from 32kpbs to 912kbps, 384 kbps typical. Alternative to AC3 for DVD Video.
Term
MP3- CBR/VBR Compression Codec
Definition
Constant Bit Rate, Variable Bit Rate. Proprietary, so requires royalty payments!
Term
AAC Compression Codec
Definition
Advanced Audio Codec. Part of MPEG2 and MPEG4 spec, generally better quality than MP3. Multichannel support, usually ~320kbps for 5.1. Used in iPod, Sony Playstation, Nintendo Wii, HDTV.
Term
ALAC Compression Codec
Definition
Apple Lossless Compression Codec – Stored in MP4 container (much like AAC), usually with file extension .m4a. Typically 2:1 compression. Files can be decoded with no loss of audio integrity.
Term
FLAC Compression Codec
Definition
Free Lossless Audio Codec – Similar to ALAC but open source and…free. Similar compression ratios.
Term
OGG Compression Codec
Definition
Ogg-Vorbis. Some say better quality than MP3. Open source, license free, often used by indy or personal sites
Term
DTS Compression Codec
Definition
Digital Theater System. Optional, multichannel, lossy, compressed format w/ typical data rates of 754kbps up to ~1520kbps for 5.1. Targeted mostly at theater presentations, though compatible with home systems.
Term
ABR (Average Bit Rate)
Definition
Type of compression

average amount of data transferred per unit of time
Term
CBR (constant bit rate)
Definition
type of compression

the rate at which a codec's output data should be consumed is constant; not the most efficient; best for streaming!
Term
VBR (variable bit rate)
Definition
type of compression

vary the amount of output data per time segment; allows for higher bit rate (more storage space) to be allocated to the more complex segments of media files while less space is allocated to less complex segments

produces better quality to space ratio than CBR

takes more time to encode, and not always compatible with target playback
Term
name
Definition
who knows?
Term
cuid
Definition
who cares
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