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Hypothesis Paper to support a deeper Technical Analysis of MQA by MQA Limited

This paper is on analyzing several technical aspects of MQA as conscientious as possible, but of course we are not omniscient. If our readers identify wrong statements, we would be more than happy to correct them in the next version of the hypothesis paper.

MQA is a highly proprietary solution and as of our knowledge there are no software encoders and decoders openly available that we could use to do a real-world analysis of the MQA audio compression scheme. For that reason, we have to rely on publicly available information (e.g. Meridian Patents, MQA-Technical Paper, etc.).

We position two hypotheses to get a grip on the proprietary technology behind MQA to provide the readers with sufficient information to do informed decisions whether MQA is a product they want to consume as music lovers.

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New version of AMTRA, AudioRepair, HPEX and XiSRC available

The Version 1.1.6 of the AMTRA, the Version 1.1.6 of the AudioRepair, the Version 1.1.5 of the HPEX and the Version 1.3.5 of the XiSRC offers the following bugfix:

AMTRA / AudioRepair / HPEX / XiSRC:

  • Bugfix: FLAC encoding stopped while processing large files  


AMTRA:
Microsoft Windows 32bit Installer – v1.1.6
Microsoft Windows 64bit Installer – v1.1.6
Apple MacOS X Image – v1.1.6

AudioRepair:
Microsoft Windows 32bit Installer – v1.1.6
Microsoft Windows 64bit Installer – v1.1.6
Apple MacOS X Image – v1.1.6

HPEX:
Microsoft Windows 32bit Installer – v1.1.5
Microsoft Windows 64bit Installer – v1.1.5
Apple MacOS X Image – v1.1.5

XiSRC:
Microsoft Windows 32bit Installer – v1.3.5
Microsoft Windows 64bit Installer – v1.3.5
Apple MacOS X Image – v1.3.5

New version of AMTRA, AudioRepair, HPEX, XiFEO and XiSRC available

The Version 1.1.5 of the AMTRA, the Version 1.1.5 of the AudioRepair, the Version 1.1.4 of the HPEX, the Version 1.0.1 of the XiFEO and the Version 1.3.4 of the XiSRC offers the following bugfix:

AMTRA / AudioRepair / HPEX / XiFEO / XiSRC:

  • FLAC encoding and multi-threading optimized

 


AMTRA:
Microsoft Windows 32bit Installer – v1.1.5
Microsoft Windows 64bit Installer – v1.1.5
Apple MacOS X Image – v1.1.5

AudioRepair:
Microsoft Windows 32bit Installer – v1.1.5
Microsoft Windows 64bit Installer – v1.1.5
Apple MacOS X Image – v1.1.5

HPEX:
Microsoft Windows 32bit Installer – v1.1.4
Microsoft Windows 64bit Installer – v1.1.4
Apple MacOS X Image – v1.1.4

XiFEO:
Microsoft Windows 32bit Installer – v1.0.1
Microsoft Windows 64bit Installer – v1.0.1
Apple MacOS X Image – v1.0.1

XiSRC:
Microsoft Windows 32bit Installer – v1.3.4
Microsoft Windows 64bit Installer – v1.3.4
Apple MacOS X Image – v1.3.4

New version of AMTRA, AudioRepair and HPEX available

The Version 1.1.3 of the AMTRA, the Version 1.1.4 of the AudioRepair and the Version 1.1.3 of the HPEX offers the following bugfix:

  • Additional functions within the FLAC metadata handler

AMTRA:
Microsoft Windows 32bit Installer – v1.1.3
Microsoft Windows 64bit Installer – v1.1.3
Apple MacOS X Image – v1.1.3

AudioRepair:
Microsoft Windows 32bit Installer – v1.1.4
Microsoft Windows 64bit Installer – v1.1.4
Apple MacOS X Image – v1.1.4

HPEX:
Microsoft Windows 32bit Installer – v1.1.3
Microsoft Windows 64bit Installer – v1.1.3
Apple MacOS X Image – v1.1.3

New version of AMTRA, AudioRepair and HPEX available

The Version 1.1.2 of the AMTRA, the Version 1.1.3 of the AudioRepair and the Version 1.1.2 of the HPEX offers the following bugfix:

AMTRA / AudioRepair / HPEX / XiSRC:

  • Bug-Fix: FLAC metadata encoding issue fixed

AMTRA:
Microsoft Windows 32/64bit Installer – v1.1.2
Apple MacOS X Image – v1.1.2

AudioRepair:
Microsoft Windows 32bit Installer – v1.1.3
Microsoft Windows 64bit Installer – v1.1.3
Apple MacOS X Image – v1.1.3

HPEX:
Microsoft Windows 32/64bit Installer – v1.1.2
Apple MacOS X Image – v1.1.2

New version of AMTRA, AudioRepair, HPEX, and XiSRC available

The Version 1.1.1 of the AMTRA, the Version 1.1.2 of the AudioRepair, the Version 1.1.1 of the HPEX and the Version 1.3.2 of the XiSRC offers the following bugfix:

AMTRA / AudioRepair / HPEX / XiSRC:

  • Bug Fixes within the metadata handler.

 

Only XiSRC:

  • Bug Fix: Depending on the settings all GUI elements are now correctly enabled and disabled.

AMTRA:
Microsoft Windows 32/64bit Installer – v1.1.1
Apple MacOS X Image – v1.1.1

AudioRepair:
Microsoft Windows 32bit Installer – v1.1.2
Microsoft Windows 64bit Installer – v1.1.2
Apple MacOS X Image – v1.1.2

HPEX:
Microsoft Windows 32/64bit Installer – v1.1.1
Apple MacOS X Image – v1.1.1

XiSRC:
Microsoft Windows 32bit Installer – v1.3.2
Microsoft Windows 64bit Installer – v1.3.2
Apple MacOS X Image – v1.3.2

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