標題: microphones [打印本頁] 作者: hl1sD9e0 時間: 2015-11-4 05:17 標題: microphones Sample Rate – Sample rate indicates the number of samples of audio signal taken per second. In digital recording,http://www.vaswim.org/cgi-bin/rcalc.cgi, the electric signal produced by the microphone is measured per second in the given number of times. The number of times the electric signal is measured is known as sample rate. The sample rate indicates the range of frequencies of the audio file that the microphone can respond to. The higher sample rate indicates that more samples are taken and hence the quality is high. The lower sample rates limit the range of frequencies that can be recorded. The sample rate is expressed in terms of samples per second or Hz.
Microphones have a specs sheet in which the frequency response of the microphones is being listed as the range of frequencies, for ex: 10 Hz to 10 KHz. This indicates that the microphone can produce output from sounds of frequencies within the range mentioned.
Element – A microphone contains or is made up of sensitive transducers which are referred to as elements,http://www.asiachinachina.com/news/home.php?mod=space&uid=18596, also called capsules. This is the first part of the microphone that “hears” the sound.
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Polar Pattern -Some region around the microphone has maximum reliability and volume. This area is called as microphone polar pattern. If the sound source is in this region,http://www.psychologicalselfhelp.org, the output produced is of excellent quality. When the sound source is located outside this region, the sound is although picked, it is poor in terms of quality. The polar patterns are used to determine the sensitivity of the microphone to sounds that come from different angle to the central axis of the microphone.
Frequency Response – Frequency response of the microphone helps in determining how the microphone reacts to different frequencies. An ideal microphone with a flat response or equal sensitivity is the one that reacts to all audible range frequencies in the same manner. This helps in producing pure and excellent audio output. But when talking practically, there is no such ideal microphone and all tend to deviate at certain frequencies.
A microphone is a device that converts sound waves into electric signals and is used in a number of industries including film and music. When you are purchasing a microphone you get a lot of specs throne at you. So,woolrich outlet italia, here are some of the terms one must understand in order to understand the microphone specs.
Bit Depth – Bit depth of a microphone refers to the amount of data in bits received or recorded for each sample. Bit depth helps in determining the dynamic range of the microphone. The dynamic range of the microphone is the range of loudest possible sound and lowest possible noise that the microphone can respond to. Bit depth determines the accuracy in processing the audio data. The greater the bit depth, the greater is the dynamic range. The bit depth is usually mentioned in terms of bits like 8-bits, 16-bits, 24-bits and 32-bits
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Based on the polar patterns, the microphones are classified as unidirectional,http://atlantic.gssc.nihon-u.ac.jp/~committee/member/comchat1/comchat.cgi,nike tn pas cher, bidirectional and omnidirectional microphones. Unidirectional microphones,woolrich outlet milano,http://tuonela.s138.xrea.com/lightbbs/light.cgi?res=213, as the name indicates pick up sound from only one direction. Bidirectional microphones pick up sound from two directions. And the Omni directional microphones pick up sound from all directions.