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37 Cards in this Set
- Front
- Back
Hertz |
It is a frequency unit from the international measuring system that equals the repetition of a phenomenon whose period is a second. It is abbreviated as Hz. |
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frequency |
It is the number of cycles that happen in a second. |
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echolocation |
It is the location of an object through the reflection of sound waves. It is used by some animal species such as bats and cetaceans, and it may have technological applications such as the sonar system. |
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infrasound |
It is a sound whose vibration frequency is lower than the one which can be perceived by the human ear. |
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ultrasound |
It is the sound whose frequency of vibrations is superior to the highest limit perceived by the human ear. It has many industrial applications and it is also used in medicine. |
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sound |
It is the sensation produced in the hearing organ by the vibrational movement of the bodies that is transmitted through an elastic means. |
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elasticity |
It is the characteristic that a material has to recover its extension and shape when a force that deformed it stops being put on it. |
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acoustics |
It is a branch of physics that studies the sound production, transmission, storing, perception and reproduction. |
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transducer |
It is the equipment that transforms a type of energy into another one and may work as a recipient or as a generator. |
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tuning fork |
It is a voice and instrument regulator that consists of a steel sheet folded as a hook with a foot, and when it is hit, it presents 435 vibrations per second. |
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compression |
It is the effort that an object is subject to by the action of two opposing forces that tend to diminish its volume. |
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rarefaction |
It refers to making a gaseous body less dense. |
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cycle |
It is the complete sequence of a periodic vibration. It goes from rarefaction to compression. |
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period |
Its the period of time that passes in a cycle
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sound wave frequency |
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wavelenght
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It is the distance that the sound goes over in a complete cycle of change in pressure and it is the physical measure of a cycle’s length. |
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amplitude |
It is the distance between a balance point and the highest wave point. |
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tone |
It is the subjective perception of frequency. There are high tones and low tones. In order to measure them, we use hertz. |
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decibel |
It is a measuring unit that compares the minimum that human can hear (0 dB) against the level we want to measure. |
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absorption
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It is the process in which sound is absorbed by an object when crashing against it. |
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reflection
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It is the quantity of acoustic energy that will change direction when it crashes against the edge of an object. |
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refraction
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It is the change in direction of the sound wave due to a variation of the means of scattering. |
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bitrate
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It is the transmission rate. It refers to the number of bits that is transmitted in a unit of time, usually kilobits per second. |
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codecs |
It means coder-decoder. It is a software that consists on an algorithm to compress and decompress video in real time. Its use doesn’t interfere with the playing speed. There are also codecs for audio files. |
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wrappers
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It is the way of organizing information related to digital audio that is not part of the sound per se such as headlines, artwork, encoding configurations, etc. A wrapper can use different codecs. |
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WAV
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A Wave file is an audio file format, created by Microsoft, that has become a standard PC audio file format for everything from system and game sounds to CD-quality audio. A Wave file is identified by a file name extension of WAV (.wav). |
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AIFF
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Short for Audio Interchange File Format, a common format for storing and transmitting sampled sound. The format was developed by Apple Computer and is the standard audio format for Macintosh computers. It is also used by Silicon Graphics Incorporated (SGI).AIFF files generally end with a .AIF or .IEF extension. |
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CDA
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CDA are not audio files, they are a way created by Windows to allow you access to an Audio CD.How to convert CDA files to MP3 (or Wav/Wma/Vorbis/Flac) with FreeRIP. (n.d.). Retrieved February 15, 2015, from http://www.freerip.com/frmmanual/tutorials/how_to_convert_cda_files_to_mp3.php |
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MP3 |
Format for creating small sound files.(n.d.). Retrieved February 15, 2015, from http://www.merriam-webster.com/dictionary/mp3 |
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AAC |
Format for creating small sound files.(n.d.). Retrieved February 15, 2015, from http://www.merriam-webster.com/dictionary/mp3 |
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MIDI |
Stands for Musical Instrument Digital Interface; it allows the communication of digital instruments and other tools.What is MIDI? (n.d.). Retrieved February 15, 2015, from http://www.instructables.com/id/What-is-MIDI/ |
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Audacity |
Software for recording and editing audio.Audacity: Free Audio Editor and Recorder. (n.d.). Retrieved February 15, 2015, from http://audacity.sourceforge.net/ |
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Garage Band |
Software in which you can play digital instruments, record ,and edit audio.GarageBand for iOS. (n.d.). Retrieved February 15, 2015, from https://www.apple.com/ios/garageband/ |
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monaural sound |
It is given when an audio is stored in one single channel and it lacks spatial sensation. It is also called mono. |
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stereophonic sound |
It is also called stereo sound. It is stored in two channels that can be reproduced in different loudspeakers and simulate the sensation of listening on one single side (left or right) |
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surround sound |
Sound output designed for the listener to be able to hear the sound in a range of 360 degrees.Surround sound. (n.d.). Retrieved February 15, 2015, from http://www.webopedia.com/TERM/S/surround_sound.html |
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streaming |
Type of reproduction in which it is not necessary to download the file to a device, it makes the reproduction faster and more direct for the user. |