Wheelmon - 1 day ago »
It seems that with MS12 ON everything (incl SD and radio) comes out as a 'made up' 5.1 which only actually works with 5.1 transmitted programmes if you're using a surround sound system. Humax suggest this setting is used with just the TV on its own.
The 'fault' lies with MS12 OFF (quote: "recommended when you use additional audio device"). Humax go on to say "..You can enjoy its original sound.....". This certainly is not happening as everything now comes out in Stereo 2.0 regardless of the transmitted format and when the transmission is DD 5.1 the volume drops considerably and the speech isn't 'right'. My tech knowledge is limited but shouldn't 'speech' frequencies be channelled separately?
Hopefully Humax can see this but perhaps they need a nudge.
All the content including Video audio, audio description and subtitles etc is transmited within a container and is simply copied to the hard disk as is. It's the job of the tuner to extract the digital data for this channel from the mux.
When you replay a recording. The tuner is not needed it simply presents the complete data stream to the boxes mpeg decoders.
As far as the box is concerned it's a perfect replica of the original broadcast stream. Any of the options that were originally transmitted should be selectable exactly as if you were watching the original live broadcast.
If the original broadcast was from a HD channel then your TV may not be able to handle the Dolby Digital audio used by HD broadcasts.
SD channels use mpeg1 layer 2 audio. Changing the digital audio out option from surround to stereo should recode Dolby Digital your TV cannot cope with to mpeg 1 layer 2 audio.
A side effect is that the Aura box volume control will now control the volume.
| Tue 23 Feb 2021 22:53:18
#22 |
