Types of Sound
"FLAC has a place in the future for high-quality audio. It is good for transporting files on the Internet as it typically halves download time. It is unlikely that for lossless compression there will be significant improvements", Hawksford wrote on Bowers & Wilkins' Society of Sound blog.
Examples. Longitudinal waves include sound waves (vibrations in pressure, particle of displacement, and particle velocity propagated in an elastic medium) and seismic P-waves (created by earthquakes and explosions).
Digital audio file formats, or codecs — such as MP3, AAC, and WMA — fall into two categories: lossless and lossy. A codec, whether lossy or lossless, is so named because of its function: to compress and decompress music into digital audio files.
Waves on the ocean, as well as the ripples on the surface of a cup of coffee after you add sugar or milk, are surface waves. If you could follow an individual particle of water under the influence of a surface wave, you would see that it's not being carried forward by the wave.
In longitudinal waves the displacement of the medium is parallel to the propagation of the wave. A wave in a "slinky" is a good visualization. Sound waves in air: are longitudinal waves.
Most WAV files contain uncompressed audio in PCM format. The WAV file is just a wrapper for the PCM encoding, making it more suitable for use on Windows systems. However, Mac systems can usually open WAV files without any issues.
Our WAV files are original master quality and offer more freedom with regards to file manipulation. However, since these original WAV files are devoid of any sort of compression you will find that one minute of music will result in a file that is about 10 MB in size.