This page discusses the alternative versions of Quantum Audio Time Stretch, namely the versions for:
- Windows (32-bit);
- Windows ARM64;
- Linux (architecture-independent - see notes below);
- Generic (Java).
For the main versions (Windows 64-bit and Mac OS), see the Home Page.
Installation instructions
- Windows (32-bit): launch the .msi installer and follow the instructions.
- Windows ARM64: launch the .msi installer and follow the instructions.
- Do not confuse "ARM64" with "AMD 64-bit". For Windows running on Intel or AMD 64-bit, use the "Windows (64-bit)" installer from the Home Page. The "Windows ARM64" installer is only for Windows running on ARM (or Aarch64) processors such as the Snapdragon.
- If you have previously installed either the "Windows (64-bit)" or "Windows (32-bit)" version on an ARM64-based Windows (they both run on Windows ARM64 through emulation), you should uninstall it first.
- Linux:
- If upgrading from a 1.1.2 version or lower, please uninstall the old version first (see "Uninstall" below)!
- DEB:
- Command line: go to the directory that contains the .deb file and type sudo apt install ./Quantum-Audio-Time-Stretch-Linux-1.1.5.deb (The "./" in front of the file name is important so that apt recognizes it is a .deb file and not the name of a package).
- GUI: right-click on the .deb file, and choose "Open with GDebi Package Installer" or "Open with Software Install" or similar. You may need to install "gdebi" first.
- On a headless server, you may first need to install xdg-utils and create the /usr/share/desktop-directories directory (due to a bug in xdg-desktop-menu). You may however consider the "Java (Generic)" version of Quantum instead.
- RPM:
- Command line: go to the directory that contains the .rpm file and type sudo dnf install Quantum-Audio-Time-Stretch-Linux-1.1.5.rpm.
- GUI: right-click on the .rpm file, and choose "Open with Software Install" or similar.
- New since version 1.1.2:
- The installation package no longer includes a Java Runtime Environment (JRE)
- However, it now contains a dependency on a JRE version 11 or greater. If no suitable JRE is installed but one is available, it will be downloaded and installed automatically by the standard package manager. If a suitable JRE is already installed it will be used.
- A JRE that was not installed through the standard package manager (for instance an Oracle version downloaded and installed manually) will not be recognized, and will trigger the download and installation of an additional JRE through the standard package manager. Advanced users that want to use a manually installed JRE (or a version 8 - 10) should use the "Java (Generic)" version of Quantum.
- The launchers in /opt/Quantum-audio-time-stretch/bin are now .sh script files instead of binaries. This removes the dependency to GLIBC that prevented Quantum from running on old systems.
- The application itself is now architecture independent. Hence it can be installed and used on any architecture for which a JRE 11 or greater is available through the standard package manager (Intel/AMD 32 / 64 bit, ARM 32 / 64 bit, ppc64, riscv64, etc)
- If both a suitable JRE (version >= 11) and an older JRE (for instance Java 8) are installed, the application will only run if the default java version (as set by the update-java-alternative command) is a version 11 or greater. Advanced user may want to edit the .sh files in /opt/Quantum-audio-time-stretch/bin to specify an exact path for the java command.
- Java (Generic): Read the "README.txt" and "TestedSystems.html" files that are included in the .zip file.
Uninstall
- Windows (32-bit): From the Windows start menu, choose Settings, Apps, Apps & Features. Search for "Quantum Audio Time Stretch" and click "Uninstall".
- Windows ARM64: From the Windows start menu, choose Settings, Apps, Installed Apps. Search for "Quantum Audio Time Stretch" and click "Uninstall".
- Linux:
- DEB:
- Open a command-line and type sudo apt remove quantum-audio-time-stretch
- RPM:
- Open a command-line and type sudo dnf remove quantum-audio-time-stretch
- Java (Generic): There is no installer, this is a "portable" version. Just delete the "Quantum-Generic" directory.
Known issues
- Windows (32-bit):
- Quantum takes at most 1 GB of RAM, regardless of the available RAM.
- If less than 1 GB is available, the computer may swap.
- 1 GB of RAM is enough to transform three 192 kHz files at the maximum quality at the same time (providing at least 3 CPU cores are available); hence in practice Quantum will use much less memory.
- Linux:
- A Java Runtime Environment (JRE) version 11 or greater must be available through the standard package manager. Users that want to use Tachyon with a JRE version 8 or with a manually installed JRE must use the "Generic (Java)" version instead.
- The DEB / RPM packages should add an entry to the menu, however on some systems they don't.
- In that case this should be done manually using a menu editor.
- The Quantum application is installed in "/opt/Quantum-audio-time-stretch/bin". The executable file is named "Quantum Audio Time Stretch". An icon can be found in the same directory.
- There are various issues on scaled displays.
- From within Quantum, choose the menu "File", "Settings", tab "Appearance". Try the different options: sometimes some skins do not work on scaled display while others work.
- On some systems, setting the GDK_SCALE=2 environment variable helps.
- Generic (Java)
- This version is only for advanced users! If you are not comfortable with shell scripts or .bat files, do not use it.
- This version does not come with an installer.
- It requires a Java Runtime Environment (JRE) version 8 or greater (at least 11 recommended) to be installed.
- It probably requires modifying the included .sh or .bat script to launch the application.
- Please refer to the "README.txt" and "TestedSystems.html" files that are included in the download.
- There is no guarantee it will work on your system. Only limited testing has been done.
Quantum Audio Time Stretch Home Page