Audacity is a free and open-source digital audio editor and recording application software, available for Windows, macOS, Linux, and other Unix-like operating systems.[4][5] The project was started in the fall of 1999 by Dominic Mazzoni and Roger Dannenberg at Carnegie Mellon University, and released on May 28, 2000, as version 0.8.[8][9]
3.1 D10 discloses a method and system for editing digitized audio information. The editing is performed by means of a digital audio editing system including a computer (preferably a PC), a keyboard and a monitor. A microphone may be used as an audio input device and a speaker may be used as an audio output device (see figure 1A). The computer comprises an audio processor for inter alia converting analogue audio input to digital form and for converting the edited digital audio signals to analogue form for output to the speaker. The computer also comprises an audio editor which includes the audio editor program being executed. Furthermore the computer comprises a disk or RAM storage and a buffer storage (cache) that interfaces between the disk or RAM storage and the audio processor (see figure 1B). The editing is carried out by changing an index table, each index in the table being a pointer to an audio segment (i.e. an addressable unit of audio data) in the audio data file being edited. Only at the end of an editing session is the audio data file updated to reflect the changes which have occurred. D10 is, in particular, concerned with this updating process ("resequencing" or "garbage collection" in the terminology of D10). Namely it avoids copying those audio segments to the updated audio data file to which an index is no longer pointing, and it also avoids copying any audio segment twice to the updated audio data file, thereby saving memory space (see page 2, line 30, to page 3, line 1, in conjunction with the description of figures 2 and 3, in particular page 9, lines 11 to 13 and 37 to 39).
Digital Voice Editor Version 3.1
Audacity is a multi-track audio editor for Linux/Unix, MacOS and Windows. It is designed for easy recording, playing and editing of digital audio. Audacity features digital effects and spectrum analysis tools. Editing is very fast and provides unlimited undo/redo. . This package contains the architecture-independent data files.
In almost all cases, references (either by name or by link) should be to a specific version of the document. W3C will make every effort to make UAAG 2.0 indefinitely available at its original address in its original form. The top of UAAG 2.0 includes the relevant catalog metadata for specific references (including title, publication date, "this version" URI, editors' names, and copyright information). 2ff7e9595c
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