File extension | .txt |
File category | documents |
Description | The organization of texts in rows applies to the TXT file format. Such text files oppose binaries, which have data that is interpreted as a text. For example images or sounds that are converted to coded forms. Raw text files can possess texts presented in formatted or in ways that are not formatted. The text files are elementary and are used for storing data in most cases. |
Technical details | Raw text files are not highly formatted, and this means they meet accepted formats by the system terminal and the basic text editor. These files are taken and used universally since any text-based program can read them. This is because it uses a standard form of encoding, making it easy for different language users to utilize the files. The ASCII- specific text files can be used in place of each other and can be read using Unix, Mac, and Windows. UTF-8 differs from ASCII, and this is attributed to Byte order mark differences, but it remains the most character set. Its compatibility with ASCII is backward. |
Programs | TextEdit |
Developer | Microsoft |
MIME type | text/plain browser/internal widetext/plain |
File extension | .mp3 |
File category | audio |
Description | MP3 (formally MPEG-1 Audio Layer-3 or MPEG-2 Audio Layer-3) is a digital format for storing audio files and audio streaming. MPEG programmers designed the format. It is one of the most required codecs for digital coding. The format is widely used in various file-sharing sites for evaluation downloading. Due to lossy compression in this audio format, it is possible to compress CD tracks up to 1/10 of their original size while maintaining high playback quality. Moreover, it can be encoded at higher or lower bit rates to adjust the resulting quality. Overtones, which cannot be perceived by a human ear, are removed. Complex algorithms allow for a smaller size of tracks. As a result, one compact disk can contain several hundred songs. MP3 is compatible with all the most popular operating systems and is supported by most modern DVD-players and music systems. |
Technical details | Before MP3 introduction, MPEG-1 had been widely used. That format contained not only audio data but images as well. MP3 breaks an audio file into parts of the same length. When the processing is over, each part is packed into its frame. It involves the spectral limit technology that requires a continuous input signal to provide the use of two adjacent structures. When spectral deleting is over, the file is to be compressed with mathematic methods. If necessary, the compression rate can be changed, even inside the same frame. Files of 128 kbit/s have 11-fold compression. Further reduction of the file size will lead to a significant deterioration in sound quality. |
Programs | Microsoft Windows Media Player MPlayer Zune Apple iTunes Amarok Totem |
Developer | Moving Picture Experts Group |
MIME type | audio/mpeg3 audio/mpeg audio/x-mpeg-3 audio/x-mpegaudio audio/x-mp3 |