該CDDA文件擴展名是被稱為CD數字音頻文件的數據格式。 CDDA文件都來自於使用CD數字音頻規範格式化一張CD翻錄音頻文件。它們被用於CD音頻數據保存到計算機,並刻錄新光盤。這些文件首先被用來作為規範的“紅書”,是由飛利浦和索尼於1980年開發的格式,這些文件被用來為家庭和汽車CD播放器。他們還與蘋果iTunes的多媒體播放器和iOS設備管理應用程序的關聯蘋果Mac OS X和微軟Windows。這些文件使用的44.1 kHz的採樣速率,這大約是出現頻率最高的雙可聽人類大約22千赫。文件中的CDDA格式,可以打開與蘋果的iTunes,蘋果的Logic Pro 9和蘋果邏輯在Mac系統快遞9,同時蘋果的iTunes在基於Microsoft Windows的系統。
Apple iTunes is a software categorized as a media player computer application for playing, downloading, organizing and saving various files, which are digital audios and videos. There is also a feature that enables content managements from iPod models, iPad Touch, iPhone, and iPad. This software can be connected to iTunes Store so a user can download or buy music, videos, audio books, ringtones or even games for iPod in just a click of a button. In fact, it allows the download of various applications via the App Store for some Apple devices, which are iPod Touch, iPhone and iPad. The downside of this is that it does not enable music transfer from one device to another unit. This program is compatible for Apple’s Mac OS X version 10.6.8 and other later versions, but also works for current Windows OS such as Windows 7, Windows XP and Windows Vista, then for the upcoming Windows 8.
Apple Logic Pro 9 is a digital audio workstation software and also a MIDI sequencer. It enables an individual to write music, record, mix and edit anything created with the tools and features integrated on the program. There is a huge collection of sources for music making from instruments to sound effects as well as loops. It has surround capabilities and full automation tools as well. The editing functions which are accessed on the menus, toolbars and controls make your music creation more exciting, easier and quicker. In fact, you can customize the transport areas and toolbars for a personal touch. It is designed for beginners and even professionals as there are templates which you can use either for scratch or with guides and just customize to make it more original. There is also Track Import that is selective which means you can re-use any recordings and settings from different music projects or audio files. The writing tool has various capabilities too so you can make your own melody, harmony and beat to create original songs or music.