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... This may allow upgrade to the latest version of portaudio, which is desirable for fixes and improvements, including the fixing of build warnings on Mac about use of deprecated SDK functions. The function PaUtil_GetTime() cannot be called. To make a conservative fix that doesn't affect the fine tuning of timing, replicate the implementation of that function directly in AudioIO.cpp, with all necessary conditional compilation branches. Don't attempt a fix with std::chrono, although that would be more nicely platform independent. Testing should confirm that MIDI playback doesn't suffer any jittery timing, such as it did especially on Linux with ALSA, when the playback feature was under development in 2017.
Audacity is an easy-to-use, multi-track audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems. Audacity is open source software licensed under GPL, version 2 or later.
- Recording from any real, or virtual audio device that is available to the host system.
- Export / Import a wide range of audio formats, extendible with FFmpeg.
- High quality using 32-bit float audio processing.
- Plug-ins Support for multiple audio plug-in formats, including VST, LV2, AU.
- Macros for chaining commands and batch processing.
- Scripting in Python, Perl, or any language that supports named pipes.
- Nyquist Very powerful built-in scripting language that may also be used to create plug-ins.
- Editing multi-track editing with sample accuracy and arbitrary sample rates.
- Accessibility for VI users.
- Analysis and visualization tools to analyze audio, or other signal data.
Getting Started
For end users, the latest Windows and macOS release version of Audacity is available from the Audacity website. Help with using Audacity is available from the Audacity Forum.
Build instructions are available here.
More information for developers is available from the Audacity Wiki.