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by HungryGuy on July 18th, 2009
All sound, even complex sound combining voice and numerous instruments, when mixed goteher, results in a single analog waveform with a frequency range that varies from moment to moment between 20 Hz (cycles [or waves] per second) to 20 Khz (20 thousand cycles per second), which is the approximate range of human hearing. Much of that frequency range is lost on analog vinyl recordings, especially at the very high frequencies, which is why digital media such as CDs and MP3 computer files are far superior in frequency response and signal quality.
When that waveform is etched onto a groove of a phonograph record, that wave is tranformed through an equalization algorithm (known as RIAA equalization) that reduces the amplitude of the lower frequency waves so that the groove will not undulate too wildly on the surface of the vinyl. Otherwise, the undulatuions in the groove from powerful bass sounds would throw the needle out of the groove. When played back, the signal from the needle is processed by an inverse algorithm in the Phono Preamplifier that restores the original waveform to the proper proportions.
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when i put a cdr in my philips audio cd recorder cdr775/777 it keeps saying wrong disc , which disc do i use???
by reecegolf on May 19th, 2010
| 1 person likes this
I need to rack mount some old non rack equipment. I don't have a rack kit. Is there a way to still rack it?
by clivetheman on July 10th, 2010
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i have a kenwood sw-32ht sub-woofer that has only 1 rca line-in. how do i connect the sub to an older pioneer 2 channel stereo receiver?
by djc5754 on August 8th, 2010
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are the outputs from the Pioneer DJM 600 DJ Mixer 4 Channel balanced or unbalanced, or a combo? Is this true of most DJ misers?
by meotch on May 18th, 2010
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are B&W speakers good?
by sega256 on July 25th, 2010
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You're reading How does a record get all those different sounds (Highs and lows, voice and instruments ) on just one groove?
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