CH 1 - Pro Tools Background Flashcards
Name and describe five types of production task that Pro Tools can be used for.
1: Audio Processing
2: Midi Production
3: Notion and Scores
4: Mixing and Automation
5: Audio for Video and Post Production
What is the frequency range of human hearing?
20 and 20,000 cycles per second (20 Hz to 20 kHz)
What does the frequency of a sound wave affect in terms of how we perceive the sound? How is frequency measured?
The frequency of the sound pressure variations that reach our ears creates our perception of the pitch of the sound.
ie: Pitches: Higher frequencies produce higher pitches, while Lower frequencies produce lower pitches.
Frequency is measured in Hertz (Hz/kHz).
What does the amplitude of the sound wave affect?
How is amplitude measured?
The loudness.
It is measured in decibels dB
How does the sample rate of a system relate to the frequency of audio it can capture?
What is the name of the law that specifies the relationship between sample rate and audio frequency?
For a frequency to be accurately represented, each cycle of the sound must be sampled a minimum of two times. If it is any lower, alias tones will occur as the system cannot process the frequency accurately.
Nyquist or Sampling theorem.
How does the bit depth of a system relate to the dynamic range of audio it can capture?
How can you estimate the dynamic range of a system?
The higher the bit depth, the bigger the dynamic range.
Bit depth x 6 = dynamic range
What are some common digital connections available on Pro Tools audio interfaces?
What type of connector jack does each use?
S/PDIF - Sony/Philips Digital Interface Format (RCA jack)
AES/EBU - Audio Engineering Society/European Broadcast Union (XLR jack)
Name some audio interfaces that are compatible with standard Pro Tools Software.
Core Audio (Mac)
ASIO (Windows)
Name some audio interfaces that are compatible with Pro Tools HD Software
HD Omni
HD MADI
HD I/O
