Apple MB792Z/A User Manual - Page 1261

Glossary Glossary AAC Abbreviation for Advanced Audio Codec. A compression and decompression algorithm and file format for audio data. AAF Abbreviation for Advanced Authoring Format. A cross-platform project exchange file format that you can use to import multiple audio tracks, inclusive of references to tracks, time positions, and volume automation. accelerando A gradual increase in tempo (see tempo). AD converter or ADC Short for analog-to-digital converter; a device that converts an analog signal to a digital signal. ADAT Abbreviation for Alesis Digital Audio Tape. The ADAT is an eight track digital multitrack cassette recorder that uses an S-VHS video tape to record audio at 16 or 20 bit depth. ADAT optical Optical interface for parallel transmission of eight audio channels via fiber-optic cable. It is a well-established standard for digital multi-channel interfaces. AES/EBU Short for Audio Engineering Society/European Broadcasting Union. This association has a standard transmission format for professional stereo digital audio signals called AES/EBU. The format is similar to S/P-DIF, but uses balanced line drivers at a higher voltage. Depending on the type of devices involved, AES/EBU and S/P-DIF coaxial interfaces can communicate directly. aftertouch MIDI data-type generated by pressure on keys after they have been struck. There are two types: Channel aftertouch, the value of which is measured by a full length keyboard sensor. It affects all played notes. Polyphonic aftertouch (rare) is individually measured and transmitted for each key. Aftertouch is also known as key pressure or pressure sensitivity. AIFF Abbreviation for Audio Interchange File Format. A cross-platform file format supported by a large number of digital audio and video editing applications. AIFF audio can use a variety of bit depths, most commonly 16 and 24 bit. AKAI Common sample data format that the EXS24 mkII is compatible with. 1261