Audacity Asio



  1. Audacity Asio Settings
  2. Audacity ® | Free, Open Source, Cross-platform Audio Software ...
  3. Audacity Asio Plugin
  4. Scarlet Solo Recording Delay | HomeRecording.com
  5. See Full List On Manual.audacityteam.org

Feb 02, 2008 ASIO is a proprietary technology of Steinberg and it would be a violation of copyright laws for Audacity, which is free, to include Steinberg's copyrighted code, which is NOT free. Steinberg will let you use ASIO, and Audacity CAN support ASIO, but by default it is not included. ASIO is a fast, high-quality way to interact with your sound hardware. Audacity can be a lot more efficient when using it. According to the Audacity wiki, 'Audacity, as an open source program licensed under the GPL, is therefore currently unable to support ASIO, despite being ASIO-capable (providing the user's sound device is similarly capable). Then start the software on Audacity Preference change host to ASIO, verify that Playback device and recording device is Denon DJ ASIO Driver. Also notice that you need to configure the sampling rate and sampling format to the same as you have on the mixer (in my example 44.1 kHz and 24Bit). Oct 01, 2018 As a result, Audacity will crash on launch if its Devices Preferences are set to use the device. This can occur not only when the device is explicitly selected in Preferences, but also if 'Microsoft Sound Mapper' (Audacity's default option as shipped) is selected when the sound device is the current default Windows device. Including ASIO as it stands would violate either the GNU license rules or Steinberg’s license – a bit of a catch-22. You can get Audacity with ASIO if you compile it yourself and add in the ASIO plug-in and promise not to distribute it to anyone else. Compiling Audacity from scratch is, it seems to me, not something to be taken lightly.

Audacity Asio Settings

Audacity asio buildThe proprietary ASIO interface standard is essential on Windows for low latency recording and playback. It is also usually the best way of making Multi-channel recordings on Windows.
  • Licensing restrictions prevent us including ASIO support in released versions of Audacity, but Audacity can be compiled with ASIO support for private, non-distributable use.
  • This page summarizes ASIO licensing issues and steps to compile Audacity with ASIO support.


Latencies on Windows, Linux and Mac

Audacity ® | Free, Open Source, Cross-platform Audio Software ...

ASIO is a proprietary audio interface standard in use on Windows which bypasses the operating system's mixing kernel, so providing lowest latency direct communication between computer audio software and hardware.

  • ASIO supports 24-bit sampling which is only otherwise available under Windows WASAPI or WDM-KS (Windows Driver Model Kernel Streaming). 24-bit sampling allows greater dynamic range, lower theoretical noise floor and greater resolution at lower audible volumes.
  • An unmixed ASIO output is 'bit identical' to the original source.
  • Multiple physical input and output channels of the hardware are accessed over one single device.
Audacity includes support for Microsoft's Windows DirectSound interface protocol. To use it, select 'Windows DirectSound' as host in Device Toolbar. This will give support for multi-channel recording on some sound devices, but not the very low latencies that are possible on ASIO.

On Linux, the standard ALSA audio API typically provides lower latencies than Windows under MME or Windows DirectSound. However, many Linux distributions now use PulseAudio by default for audio routing and mixing. PulseAudio sits between the sound source and the Linux kernel and thus has somewhat higher latency than direct use of ALSA. For lowest latencies, you can use the JACK API that provides both low latency audio communication and audio routing between applications. Current Audacity supports JACK fairly well, but with some limitations.

Audacity Asio Plugin

On Mac, Core Audio is the standard API and is fully supported by Audacity. Core Audio also has lower latencies than Windows under MME and Windows DirectSound but Jack OS X can be used for lowest latency.

Audacity and ASIO

The ASIO technology was developed by German company Steinberg and is protected by a licensing agreement which prevents redistribution of its source code.

Audacity, as an open source program licensed under the GPL, is therefore currently unable to support ASIO, despite being ASIO-capable (providing the user's sound device is similarly capable). If ASIO support were distributed in Audacity builds this would either violate Steinberg's licence agreement if the code were included, or conversely would violate Audacity's GPL Licence if the code were withheld. There are persistent rumours of Steinberg opening up licensing, but without any apparent movement. Anyone who cares about this issue is invited to make their views known to Steinberg via their Contact page.

Non-distributable ASIO support in Audacity

Audacity provides ASIO support on Windows for individuals who are prepared to compile Audacity from source code using the optional Steinberg ASIO SDK.

ASIO support is provided strictly on the basis that it is NON-DISTRIBUTABLE, that is, you may NOT copy or distribute builds including ASIO support to anyone else. The build is strictly for your own personal (private or commercial) use. For the same reasons, Audacity can NOT distribute builds of Audacity including ASIO support, so please don't ask!

The following is an overview of compiling Audacity from source code including ASIO support.

  1. Install the free Microsoft Visual Studio Community Edition Integrated Development Environment (IDE).
  2. Download and install the ASIO SDK from Steinberg.
  3. Download the source code of the latest Audacity release from https://github.com/audacity/audacity/releases. Follow the steps in win/compile.txt in the source code to:
    1. Download and install the wxWidgets GUI toolkit then build wxWidgets using Visual Studio.
    2. Set the WXWIN environment variable to the directory where you installed Widgets and set the ASIOSDK_DIR environment variable to the directory where you installed the ASIO SDK. Reboot the computer.
    3. Build Audacity using Visual Studio.

Follow the instructions and download links on Developing On Windows in the Audacity Wiki for full details.

Scarlet Solo Recording Delay | HomeRecording.com

If you need help, please ask on the Compiling Audacity board on the Audacity Forum.

Since Audacity doesn’t support ASIO drivers without advanced modification of the program, using Apogee ONE, Duet and Quartet with Audacity requires these specific steps:

See Full List On Manual.audacityteam.org

  1. SAMPLE RATES MUST BE MATCHED MANUALLY in:
    1. Control Panel > Sound > Playback > (Select Apogee Interface) > Properties > Advanced
    2. Control Panel > Sound > Recording > (Select Apogee Interface) > Properties > Advanced
    3. Audacity App > Project Rate
  2. In Audacity, set Audio Host to MME.
  3. In Audacity, click input meters to start monitoring of the input. If no audio is heard, choose Audacity > Transport > Rescan Audio Devices.