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tebasuna51 · 21st August 2019, 20:58

I am very old and I remember the first Dolby Surround in VHS tapes, a stereo analogic audio matrix encoded was converted in more than 2 channels.

Until DPL II to obtain 5.0 (not 5.1) from only stereo analogic audio. You are right was usefull before digital conections (SPDIF, HDMI) or to save some space.

I say than a DPL IIx to recover 7.1 from a 5.1 is useless at all, of course in my opinion.

21st August 2019, 20:58	#9 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 6,915	I am very old and I remember the first Dolby Surround in VHS tapes, a stereo analogic audio matrix encoded was converted in more than 2 channels. Until DPL II to obtain 5.0 (not 5.1) from only stereo analogic audio. You are right was usefull before digital conections (SPDIF, HDMI) or to save some space. I say than a DPL IIx to recover 7.1 from a 5.1 is useless at all, of course in my opinion. __________________ BeHappy, AviSynth audio transcoder.