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1.Name some of the folders and files that ProTools creates as part of the session hierarchy. Where is the session file (. ptx) stored? All of the files are created in the session folder. (A different kind of document a project file is a cloud-based session file that can be used for collaboration or remote access). The session file .ptx contains a map of all the tracks, audio files video files, settings and edits. The Bounced files folder is a directory used by default profiles created using the bounce to disk function. If this function is not used the folder remains empty and is removed when the session is closed. The Clip groups folder as a default directory that Pro Tools uses for any clip groups exported. If no clip groups are exported it remains empty and is removed when the session is closed. Clip groups are discussed in ProTools 110. Rendered files is a default folder whenever you use rendered Elastic Audio processing. ProTools creates temporary files for elastic audio in this directory. If you commit rendered elastic audio to a track, a new file is written in the Audio files folder and the temporary rendered file is deleted. Session file backup folder – the auto backup function on Pro Tools stores autosaved back up files. You can specify the number of backup files is to maintain and the backup frequency in the operation tab of the preferences dialogue box.
2.What is the WaveCache.wtm file used for? What happens if the WaveCache file gets deleted or goes missing? It stores all the waveform display data for any audio and this enables the session to open quickly. If it is deleted or goes missing Pro Tools will re-calculate the waveform data as the next session is opened, but the session may take longer to open and display.
3. Where are audio files stored in the session hierarchy? They are stored in the Audio files folder.
4.Where are Pro Tool’s is MIDI files normally stored? MIDI data is normally stored within the ProTools session, and no MIDI files will normally exist outside the session document. However MIDI can be exported by using the Export > MIDI command.
5. Which components should you turn on first when powering up a Pro Tools system? Which component should you turn on last? The recommended sequence for starting a proton system is as follows:
a. Start with all your equipment, including your computer, powered off.
b. Turn on any components that use external power and wait for them to initialise e.g. external drives, external midi interfaces, midi controllers, audio interfaces (if not bus powered)
c. Start your computer and launch Pro Tools
d. Turn on or unmute your audio monitoring system as the last step.
6. What type of processing does the hardware buffer size affect? What type of processing does it not affect? Low latency domain processing. This handles host-based tasks such as AAX native plug-in processing during recording or live input monitoring. Lower settings reduce monitoring latency when you are recording on monitoring live input. Higher settings provide more processing power for tracks that are recording on monitoring light input at the expense of higher latency. The Hardware Buffer size does not affect high latency processing (high latency processing is used by Pro Tools for Mix tracks)
7. What kinds of commands can be found under the ProTools View menu? How does the View menu differ from the Window menu? View menu commands affects the display within Pro Tools windows tracks and clips. Most View menu window commands show or hide parts of the main Pro Tools windows. Selecting a command will display a component part of a window and deselecting the command will hide it. Although they are commonly confused, the View menu and the Window menu serve distinctly different functions. Commands in the View menu affect parts of a window or change all the elements within the window are displayed. By contrast, commands in the Window menu show or hide entire windows or arrange the windows on the screen
8.What kind of commands can be found under the ProTools Options menu? How does the options menu differ from the setup menu? The Options menu commands let you toggle several editing, recording, monitoring, playback, and display options. From this menu you can enable loop recording toggle pre-and post-roll on and off, engage dynamic transport mode set scrolling options and make other similar choices
9. Which main Pro Tools window displays audio waveforms and can be used to work directly with audio, MIDI, and video files on tracks? Edit Window
10. Which ProTools window provides access to Pan controls and Volume faders for each track? Mix Window
1. Name and describe five types of production tasks that ProTools can be used for. 1 Audio Processing, 2 MIDI Production, 3 Notation and Scores, 4 Mixing and Automation, 5 Audio for Video and Post-production
2.What’s the frequency range of human hearing? 20Hz – 20Khz
3. What does the frequency of a sound wave affect in terms of how we perceive the sound? How is frequency measured? Pitch. Cycles per second (CPS) / Hertz (Hz)
4. What does the amplitude of the sound wave affect? How is amplitude measured? Loudness / Volume. Decibels (db)
5. 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? The sample rate of a system should be twice the frequency of audio it is required to capture. Nyquist theorum
6. How does the bit depth relate to the dynamic range of audio it can capture. How can you estimate the dynamic range of a system? The more binary digits included in the bit depth, the greater the accuracy of each sample measurement. For example a 4-bit word (2 to the 4th power) can represent 16 discrete amplitude levels. A 16-bit word could represent 65, 536 levels (2 to the 16) and a 24-bit work can define more than 16 million discrete amplitude levels (2 to the 24)
You can estimate the dynamic range of a system by multiplying by 6.
e.g. an 8-bit system would produce a dynamic range of 8 x 6 = 48b. 16-bit = 96dB (16 x 6) and 24-bit = 144dB (24 x 6)
Note: 16-bit / 44.1Khz mono = 5MB per minute, 16-bit 96-Khz mono = 11MB per minute. 24-bit/44.1kHz mono 7.5MB per minute, 32-bit/44.1Khz = 10 MB per minute.
7. 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) which uses RCA (a.k.a. coaxial) and AES / EBU (Audio Engineering Society /European Broadcast Union) that uses XLR. The latter is preferable as it is technically more stable and filters out any copy protection encoded in the digital audio stream. Also S/PDIF is consumer grade.
8. Name some audio interfaces that are compatible with standard Pro Tools software. Any audio interface with Core Audio (Mac) or ASIO (Windows) drivers
9. Name some Avid audio interfaces that are compatible with Pro Tools | Ultimate software. Pro Tools | HD OMNI, Pro Tools | HD I/O, Pro Tools | HD MADI, Pro Tools | HD MTRX, Pro Tools | HD MTRX Studio
1. Name and describe five types of production tasks that ProTools can be used for.
Audio Processing
Midi Editing
Score Sitation
2. What’s the frequency range of human hearing?
20hz 20khz (20 cycles per second)
3. What does the frequency of a sound wave affect in terms of how we perceive the sound? How is frequency measured?
Frequency affects the pitch of a sound, the higher the rate the higher the higher the pitch. Frequency is Measured in Hertz (old school version: cycles per second)
4. What does the amplitude of the sound wave affect? How is amplitude measured?
Amplitude affects the Loudness and gain of a sound wave. Measured in Amps
5. 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?
Sample rate should be twice the rate of audio as the one its trying to capture, relates to the number of samples of audio playing per second. The law is called the format.
6. How does the bit depth relate to the dynamic range of audio it can capture. How can you estimate the dynamic range of a system?
The bit dept is the maximum dynamic range range between the lowest and highest sounds. Also greater accuracy of the amplitude of a sample. Take bit depth but multiply it by 6.
7. What are some common digital connections available on Pro Tools audio interfaces? What type of connector jack does each use?
RCA, XLR, S/PDIF
8. Name some audio interfaces that are compatible with standard Pro Tools software.
Any audio interface with core audio(Mac) and AISO (Windows)
Focusright Scarlett,
9. Name some Avid audio interfaces that are compatible with Pro Tools | Ultimate software.
Protools HD