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37 Cards in this Set

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  • 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.

frequency

It is the number of cycles that happen in a second.

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.

infrasound

It is a sound whose vibration frequency is lower than the one which can be perceived by the human ear.

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.

sound

It is the sensation produced in the hearing organ by the vibrational movement of the bodies that is transmitted through an elastic means.

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.

acoustics

It is a branch of physics that studies the sound production, transmission, storing, perception and reproduction.

transducer

It is the equipment that transforms a type of energy into another one and may work as a recipient or as a generator.

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.

compression

It is the effort that an object is subject to by the action of two opposing forces that tend to diminish its volume.

rarefaction

It refers to making a gaseous body less dense.

cycle

It is the complete sequence of a periodic vibration. It goes from rarefaction to compression.

period

Its the period of time that passes in a cycle

sound wave frequency

wavelenght

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.

amplitude

It is the distance between a balance point and the highest wave point.

tone

It is the subjective perception of frequency. There are high tones and low tones. In order to measure them, we use hertz.

decibel

It is a measuring unit that compares the minimum that human can hear (0 dB) against the level we want to measure.

absorption

It is the process in which sound is absorbed by an object when crashing against it.

reflection

It is the quantity of acoustic energy that will change direction when it crashes against the edge of an object.

refraction

It is the change in direction of the sound wave due to a variation of the means of scattering.

bitrate

It is the transmission rate. It refers to the number of bits that is transmitted in a unit of time, usually kilobits per second.

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.

wrappers

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.

WAV

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).

AIFF

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.

CDA

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

MP3

Format for creating small sound files.(n.d.). Retrieved February 15, 2015, from http://www.merriam-webster.com/dictionary/mp3

AAC

Format for creating small sound files.(n.d.). Retrieved February 15, 2015, from http://www.merriam-webster.com/dictionary/mp3

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/

Audacity

Software for recording and editing audio.Audacity: Free Audio Editor and Recorder. (n.d.). Retrieved February 15, 2015, from http://audacity.sourceforge.net/

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/

monaural sound

It is given when an audio is stored in one single channel and it lacks spatial sensation. It is also called mono.

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)

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

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.