It’s nearly perfect – at the moment my subwoofer gets the whole frequency range which doesn’t always sound right – my next goal will be incorporating a low-pass filter using LADSPA into this config file to have the perfect sound. I don’t have an amplifier, I can only send one channel to my sub and it eats it! Oldschool, I know. Why number 3? Because some movies (especially from the 80’s) are poorly mixed and the sub channel is way too soft (or consists of pure nothingness). Update : Tobias told me about the FreeSurround plugin that makes upmixing stereo sources to surround a piece of cake. Have an extra recording device for my (mono) webcam.Have a volume controller that works for all three situations above.Use a surround source with six channels, but take the two front channels (stereo) and additionally, send them to the subwoofer.Upmix a stereo source with two channels to six channels.This is easy, because it’s the default in ALSA. Mono, Stereo, Surround get to their according speakers. But it also has much more power when done right! □ I wanted to be able to achieve six cases: I also wanted to do this on Linux which is way more complicated and involves editing a text file called. Recently, I discovered how to generate a perfect 5.1 upmix out of a stereo signal on Microsoft Windows.
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