This is TRUE but better quality sound comes from Optical or digital hookups.
Auxiliary inputs to a receiver are always stereo. If you have a 5-channel analog signal (from a computer or other multi-channel device), you will need a receiver with a 5.1 analog input. This has 5 separate RCA inputs for left, right, center, sub, and the two surround speakers.An analog output from a VHS-Hi Fi VCR or the analog outputs of a DVD player can be input into the stereo aux inputs of a receiver and decoded to Dolby Surround, but this format is actually only 3 discrete channels, left, right, and surround. It has no separate information for the sub or the center channel, and has a limited bandwidth on the surround channel.So, the answer is NO.Read more: Is_there_a_way_you_can_add_5.1_audio_to_Auxiliary_Inputs
Auxiliary inputs to a receiver are always stereo. If you have a 5-channel analog signal (from a computer or other multi-channel device), you will need a receiver with a 5.1 analog input. This has 5 separate RCA inputs for left, right, center, sub, and the two surround speakers. An analog output from a VHS-Hi Fi VCR can be input into the stereo aux inputs of a receiver and decoded to Dolby Surround, but this format is actually only 3 discrete channels, left, right, and surround. It has no separate information for the sub or the center channel, and has a limited bandwidth on the surround channel.
discrete
If your receiver has an HDMI input, use that. If it doesn't, then you will have to use analog or digital audio connectors to plug it in.
Many surround receivers have surround simulation capability, however this is not true surround sound. Two-channel analog outputs from a DVD player can be decoded to 3 or 4 channel Dolby Surround (not the same as Dolby Digital or DTS) using the same surround receiver.
Analog signals are continuous while digital signals are discrete
Analog signals can be received using an analog receiver.
analog
You will need a sound card with a digital output (coaxial or optical) or a sound card with surround audio outputs and a receiver with 5.1 analog inputs to make it work.
analog (continuous) and discrete (discontinuous)
An analog signal is a continuous signal that contains time-varying quantities. Unlike a digital signal, which has a discrete value at each sampling point, an analog signal has constant fluctuations. netonplus.com
analog to digital converter