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29 Cards in this Set
- Front
- Back
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What is CD-DA format?
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CD-digital audio format.
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What is AIFF?
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Audio Interchange File Format - an uncompressed audio file format.
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What are the bit rate guidelines for recording MP3s?
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128Kbps is the industry standard.
Classical is better at 192-384 Kbps. Voice or audiobooks can be turned down to 96 or 64Kbps. |
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What does MP3 stand for?
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MPEG-1 Audio Layer 3.
MPEG stands for Moving Pictures Experts Group. |
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How much space would a 40MB uncompressed audio file take using MP3 compressed format?
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The same 4-minute song that takes 40MB
uncompressed takes only 4MB. |
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Where would you see CD-DA format?
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When you look at an audio CD in Windows Explorer.
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What is the file extension for CD-DA format?
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.cda
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What is ripping?
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Converting the tracks of a CD into PC audio files.
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How much space might a 40MB uncompressed audio file take up using the WMA compression format?
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2MB.
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What are the 3 main digital music file types?
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.wma, .mpeg, .wav
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What is bit rate?
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The number of bits a codec uses to represent one second of audio.
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How much uncompressed audio can a 650 MB CD hold?
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74 minutes.
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What is transcoding data?
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Translating data from one file format into another.
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What is a .wav file?
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Abbreviation for waveform.
An uncompressed digital audio format. |
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What is codec?
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Stands for compressor/decompressor.
Software that compresses data and/or transcodes data from one file format to another. |
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What is a .wma?
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Windows Media Audio. A compressed audio format.
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How much file space might an uncompressed audio format take up per minute of audio?
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up to 10MB.
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How much uncompressed audio can a 700MB CD hold?
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80 minutes.
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What is an uncompressed audio file?
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Audio file that contains most of the original audio information from the original recording.
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What is sampling rate?
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The frequency at which a codec takes a reading of an audio waveform.
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What is a compressed format?
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Condensed.
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What is burning?
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Copying audio files onto a CD.
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How much can an MP3 encoded at CD-quality store?
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1 minute of audio in approximately 1MB.
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Which audio file types are compressed?
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MP3, WMA
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How many hours of CD-quality music can you burn onto a CD using WMA or Mp3PRo compression?
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Approximately 26 hours.
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How much space might a 4-minute song take up uncompressed?
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40 MB.
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How much more can an MP3 at CD-quality store in 1MB than an uncompressed format?
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4 times more.
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What is the normal sound frequency range for humans?
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20Hz to 20,000Hz. Sound waves vibrating at less than 20 times per second or more than 20,000 times per second will be inaudible.
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How does MP3 audio compression work?
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Leaves out unnecessary data such as noise
audio that's pitched too high or low for human ears redundant sounds such as notes that are the same in both stereo speakers. |
