revision 1) 2) 3) 4) 5) 6)Legal Issues 7) Methodology 8) Compression of gaming audio 9) audio limitations The new standards stipulate that all personal music players sold in the EU after February 2013 should have a default set volume level of 85dB. Mobile phones which can play music through headphones are also affected by these recommended sound limitations. H
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Unit 73 - Sound
Unit 73 - Sound Unit 73 - Sound: Aircon white noise ocean Sounds are made from sine waves. The medium is the air. Wave length = from one starting point to another same point Wave length is measured in frequency/Hz (how frequent it occurs) Amplitude is measured in Lambda Human's can hear from 20 Hz - 20 KHz Waves lengths = how many times you hear it per second, if you hear something 500 times in a second then its 500Hz Middle 'C' Hz = 261Hz Violin Piano Timbre = Tone Colour (quality of the sound) Vibrations of harmonics at the same time producing the pitch. Timbre ( tone quality , color) is what differentiates two sounds in the same frequency (same note ). For example, the Do (C) note played in a guitar has a really different sound of a Do (C) when played in keyboard or flute. This means that these instruments have different timbres. Loudness = level of sound. Measured in dBs. Voice = 5