Quote:
Originally Posted by gyyang
Here is the result.
I bought a cheap 5.1 home theater amplifier, hook it up to my satellite receiver with an optical cable. For those channels on which my TV has sound, the amplifier detected "FCM Stereo". For those without sound (suppose to have audio format AC3), the amplifier didn't show anything. That means, no AC3, or Dolby digitial, data input to the amplifier. Do all of you agree?
Then I found an easier way to determine whether the receiver pass thru AC3 data. I removed the amplifier, but left the optical cable attached to the receiver. When there was audio data output from the receiver, the other end of the cable lit up (red light); when no audio data (including AC3), the cable did not light up. Correct me if I am wrong.
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One thing to look at is to look at the A/V PIDs that your receiver saved for those channels. My original Lifetime receiver has the SPDIF port, but the firmware didn't pass AC3. The key to telling if it was the firmware was that when you would scan in a transponder, that the receiver would save a PID for video, but the audio PID would be zero, because the firmware just didn't recognize AC3 audio. After I upgraded to firmware that recognized AC3, then it would store the audio PID, and everything worked. Before you ask though, it didn't help to manually add the audio PID, because the software didn't know what to do with it anyway.