Sex hormones: Low estrogen levels due to missing menstrual periods or to menopause can cause osteoporosis in women. Low testosterone levels can bring on osteoporosis in men. Anorexia nervosa: This eating disorder can lead to osteoporosis. Calcium and vitamin D intake: A diet low in calcium and vitamin D makes you more prone to bone loss. Medication use: Some medicines increase the risk of osteoporosis. Activity level: Lack of exercise or long-term bed rest can cause weak bones. Smoking: Tobacco is bad for the bones, heart, and lungs.
Compressed Versus Uncompressed. Digital audio can be split into two types of formats, compressed and uncompressed. Uncompressed formats like CD Audio, WAV, or AIFF are pretty much perfect representations of the audio that was recorded. If you convert something from one uncompressed format to another, it's a completely perfect copy.
Most audio CD players use an uncompressed data format capable of producing high-quality sound. The majority of music CDs come in a format called WAV, which is also used for some sound files in personal computers. In addition, many CD players can handle other formats that allow extended playback time. Digital Recording. The audio on a CD is represented by a long stream of numbers. The CD player retrieves these numbers from the disc and reconstructs the original sound waves from the data. The numbers are recorded digitally.