The Isostem procedure analyses the spatial energy distribution of an energy signal and differentiates between direct sound and ambient sound. Based on these results, the information is distributed from 2 channels to 5 channels, i.e. the frontal sound components are allocated to the front channels and the ambience components to the rear surround channels. This generates an upmix with all relevant spatial sources. As no new information is added, but the existing information is merely redistributed, the calculation is reversible. The ISOSTEM algorithm is the only upmix technology, that generates the original stereo signal in the downmix.
The EXPERT version contains the full range of functions and all setting options. Various parameters can be defined individually via a GUI and saved as presets. Up to 6 presets can be saved and retrieved as well as transferred to further ISOSTEM devices.
The Live version is optimal for use in broadcasting. The setting options are limited in this version. In addition to pre-defined factory presets, presets imported out of the Expert version can also be used. LIVE also has an important backup function: If two devices are connected to one another and one of the devices has a malfunction, the system switches automatically to the remaining functioning device.
Plug-in for Minnetonka AudioTools Server
The ISOSTEM alogorithm has been licensed as plug-in for the AudioTools Server of Minnetonka. The range of functions of the plug-in will be equal to the hardware version 'Live', that works with predefined factory presets. These factory presets are delivered with the installation of the AudioTools Server, furthermore they can be downloaded from the ISOSTEM websote. Individual presets can be created with the hardware version 'Expert' and imported to the AudioTools Server.
Plug-in for audio network system NEXUS
The ISOSTEM algorithm has been licensed as a plug-in for the audio matrix NEXUS from Stagetec and fully integrated into the system. Up to two licenses can run on the XDSP06 card. The ISOSTEM function in the Nexus system will be equal to the ISOSTEM hardware version ‘Live’, which works with pre-defined factory presets. Individual presets can be created with the hardware version expert and imported to the ISOSTEM plug-in in the Nexus.
ISOSTEM Loudness Ranger ATS
The ISOSTEM Loudness Ranger is a processing module for dynamic control for AudioTools Server – a file-based audio automation platform for broadcasters. It achieves a reduction in the Loudness Range (LRA according to ITU BS.1770 and EBU R.128) without producing audible artefacts. The algorithm ISOSTEM Loudness Ranger combines multiple measurement layers from various time windows, and applies numerous infinitesimal signal corrections. In this way the LRA can be reduced without affecting the quality of the signal. Furthermore the method either adjusts the programme loudness of the signal to a user-defined value or alternatively preserves the original value. In any case an adjustable maximum True Peak Level is met.
ISOSTEM is a development of DSPECIALISTS digitale Audio- und Messsysteme GmbH and Antoine Hurtado. If you are interested in distributing ISOSTEM or if there is no distributor in your country, please address your inquiry to:
DSPECIALISTS Digitale Audio- und Messsysteme GmbH
Helmholtzstraße 2-9 L
Phone: +49 30 467 805-0
Fax: +49 30 467 805-99
Our distributor in Brasil:
ASPA STAGETEC BRASIL
COMÉRCIO, IMPORTAÇÃO E SERVIÇOS DE EQUIPAMENTOS DE ÁUDIO E VÍDEO LTDA.
Av. Moaci, 395 – Cjto. 82
São Paulo – SP / Brazil
Phone: +55 11 3467-0132
Fax: +55 11 8180-1466
Our distributor in China:
SALZBRENNER STAGETEC MEDIAGROUP
China Representative Office
Room 901, Unit C, No.4 building,
Bai Zi Yuan, No.16, Bai Zi Wan Road,
Chao Yang District,
China P.C: 100124
Phone: +8610 87 73 21 98
Fax: +8610 87 73 21 98 608