![what is the difference between pcm and dolby digital what is the difference between pcm and dolby digital](https://samplerateconverter.com/sites/default/files/u1/pcm-audio-explained.png)
#What is the difference between pcm and dolby digital tv#
You should also mute your TV speakers while you do this, since there is no need to play the audio that's sent to your TV via the HDMI cable as you have another digital audio cable connected to your receiver also you might get an echo if the processing delays are different. If your receiver can decode Dolby Digital (in all certainty it will), you should select "Dolby Digital". I currently get dolby digital with Natgeo and Discovery (didn't check others), and the quality is very good. As for the world cup on HD channels, as far as I remember, it was broadcast with dolby digital and I had got 5.1 channel audio on my receiver. So, if you choose PCM, you'll lose 5.1 dolby digital sound that most of their HD channel content comes with. I have connected my STB to my LCD using an HDMI cable and STB to my Sony home theater system using an optical cable.Īt the moment, Tata Sky's PCM ouput is 2-channel. I was wondering which one is better for HD content like world cup. I saw two options under audio settings : PCM and dolby digital. Post added at 08:29 PM - Previous post was at 08:21 PM.
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It should be connected to the S/PDIF output port of your STB, and the other end to the digital coaxial in on your receiver. The coaxial cable is a digital coaxial cable. Post added at 08:21 PM - Previous post was at 08:18 PM -Ĭan you please specify 'coaxial cable' and where it is to be connected to the STB? Perhaps, what you really mean is that, some processing is done at the STB when you select PCM (dolby digital to pcm) yes, but this pcm is 2-channel so there is a downmix done. Since receivers are likely to have superior decoding capability, one should send in digital audio directly from the STB to the receiver (via HDMI or digital coaxial) it will decode and play it back on all your speakers.
![what is the difference between pcm and dolby digital what is the difference between pcm and dolby digital](https://boomspeaker.com/plg_upd/2018/08/pcm-vs-bitstream.jpg)
Note that in this latter case, you get 2-channel audio, whether or not the original audio was Dolby digital. However, if you connect the analog out (L/R) outputs of your STB to your receiver or TV, the decoding is done at the STB. If you use a digital coaxial audio cable (connecting the S/PDIF output of your STB to your receiver), then again, your STB sends out digital audio, and the decoding is done at the receiver. If you connect it via a HDMI cable (some receivers support HDMI input), then digital audio (whether it's PCM or Dolby digital) will be decoded and played by the receiver. The place of decoding (digital to analog) depends on how you connect your STB to your receiver. In case of 5.1 PCM output, the decoding is happening at the STB and in the other case its happening at the home theater. The only difference is where the decoding of Dolby is happening.