Audio editing software is any software or computer program which allows editing and generating of audio data. Audio editing software can be implemented completely or partly as a library, as a computer application, as a web application, or as a loadable kernel module. Wave editors are digital audio editors. There are many sources of software available to perform this function. Most can edit music, apply effects and filters, and adjust stereo channels. A digital audio workstation (DAW) consists of software to a great degree, and usually is composed of many distinct software suite components, giving access to them through a unified graphical user interface using GTK, Qt, or another library for the GUI widgets. DAWs are used for recording or producing music, sound effects and more. The first DAW was a digital recorder developed by Soundstream in 1977. In the 1970s and 1980s, the main challenge faced when creating a DAW was finding inexpensive high-performance storage. Editors designed for use with music typically allow the user to do the following: The ability to import and export various s for editing. Record audio from one or more inputs and store recordings in the computer's memory as digital audio. Edit the start time, stop time, and duration of any sound on the audio timeline. Fade into or out of a clip (e.g. an S-fade out during applause after a performance), or between clips (e.g. crossfading between takes). Mix multiple sound sources/tracks, combine them at various volume levels and pan from channel to channel to one or more output tracks Apply simple or advanced effects or filters, including amplification, normalization, limiting, panning, compression, expansion, flanging, reverb, audio noise reduction, and equalization to change the audio. Playback sound (often after being mixed) that can be sent to one or more outputs, such as speakers, additional processors, or a recording medium Conversion between different s, or between different sound quality levels. Typically these tasks can be performed in a manner that is non-linear.