Arkansas Digital Communications III Unit 3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| AIF | audio interchange format; an uncompressed audio file format used by Macs
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| Audio/sound | audible content in media production and publishing
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| Bidirectional microphone | microphone that picks up sound from two opposite directions
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| Bit rate | the number of bits per second processed when sampling sound (bps).
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| Boom microphone | a directional mic that is mounted on a boom arm and positioned just out of camera
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| Key frame | a frame in a timeline where a change will occur; used in audio, video and animation production
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| Kilohertz | one thousand hertz; measures the sampling rate of an audio file
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| Lavalier microphone (lapel) | a small microphone designed to pick up speech from a single person, typically attached to the subject's clothing with a specialized clip
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| MIDI | musical instrument digital interface; format for recording music from synthesizers and other electronic instruments
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| Mixing | audio mixing is the process by which sounds are combined into one or more channels
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| mono | an audio signal that is mixed together and routed through a single audio channel
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| Mounted microphone | a microphone that is attached to a stand or boom
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| MP3 | mpeg 3; a compressed audio file format that is the current standard for exchanging audio files over the Internet; 1/10 the size of a wave file
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| MP4 | mpeg 4; a compressed file format that can be used for audio or video; appropriate for streaming
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| Omnidirectional microphone | microphone that captures equally from all directions
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| Original work | a distinctive piece created by an author or artist
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| Ripping | the process of digitally extracting audio from CDs to your hard drive
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| Sampling rate | the number of samples taken per second when sound is recorded; 1Hz-1 sample per second; currently measured in kilohertz; 44.1 is CD quality, 22.1 is radio quality
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| Silence | the absence of sound in a production; used to set a mood or provide a moment for reflection
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| Sound effects | audio effects other than music or speech that are enhanced or artificially created and added in postproduction
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| Speech | an example of audio that can include voice overlay, dialogue or direct address
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| Stereo | an audio signaled divided into two separate channels, played back simultaneously via separate speakers
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| Streaming | playing audio or video immediately as it is downloaded from the Internet, rather than storing it in a file on the receiving computer first
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| WAV | waveform; uncompressed audio format for Windows
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| Wireless microphone | a microphone that is not physically connected to a camera or recording equipment
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| WMA | windows media audio; compresssed audio format originally designed for Windows Media Player
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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