6 and 7 Flashcards
Nyquist theorem
sampling theorem says sample rate must be at least double the highest frequency
Oversampling
(sampling higher than Nyquist rate) prevents aliasing (distortion and static)
Quantization is
headroom
Common quantization rates
8, 16, 24, 32-bit float
sample rate for CDs
44.1k
sample rate for DVDs
48k
sample rate for cassette tapes, FM radio
32k
sample rate for MP3, AM radio
22k
signal to ratio error
6(frequency)+1.8db
what does the signal to ratio error say
how much headroom we have before we start to distort
interfaces use what kind of inputs?
analog
devices are synced through
word clock
word clock syncs by what cable
BNC
DAW
digital audio workstation
what are some DAWs?
protools, logic, ableton
MIDI
musical instrument digital interface
MIDI cable
circle with 4 pins
DAWs can also sync
video
DAWs can sync through
ReWire
DSP
digital signal processor (gear with its own processing power)
Advantage of using a DAW
DSP, virtual instruments, video integration, multitrack recording/editing, MIDI
Dither is used when
changing bit depth
Dither is
adding noise to get more headroom
ADAT acronym
Alesis Digital Audio Tape
ADAT is
lightpipe, optical cable
SPDIF acronym
Sony Philips Digital InterFace
SPDIF is
coaxial and optical
AESEBU acronym
audio engineer society european broadcast union
AESEBU is
XLR to DB25
Windows driver
ASIO
Mac driver
Core Audio
Thunderbolt 3 can daisy chain
6 devices before it slows down
ADAT has how many channels at low res
8
ADAT has how many channels at high res
4
Controller is
physical faders that let you control what’s going on in your DAW
how is a broadcast wav different from a standard wav?
broadcast uses meta data to save information, it’s added texturing
difference between aiff and wav?
they are both lossless. aiff is made by mac, wav windows
usb-c looks like
sorta like my cell phone charger
how do you tell thunderbolt-3 and usb-c apart?
focus on the logo
firewire cable
3 pieces, ones weird