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Is Pcm the Same as Bitstream?

Sarah Jenkins • • 7 min read
Is Pcm the Same as Bitstream?
Bitstream audio means the receiver will decode all the sound, this is generally the easiest option for newer AVRs. PCM means the device itself decodes the sound and sends it. It's exactly the same sound either way.

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Consequently, what's the difference between PCM and bitstream audio?

For digital optical/coaxial connections, while the bitstream output option can send a standard Dolby Digital or DTS 5.1 surround sound signal to your receiver for further decoding, the PCM option will only send a two-channel signal.

Beside above, what is bitstream audio out? Bitstream encoding is a core technology that is used in home theater audio. It provides a way to transfer data-heavy surround sound information between a source device and a home theater receiver or AV preamp/processor within a narrow bandwidth using a variety of connection options.

Thereof, what is PCM audio on TV?

Pulse-code modulation, abbreviated "PCM," is a form of digital signal that is used to represent analog data. Depending on the model of television you watch, switching the audio output to PCM may improve the sound quality of the television's speakers.

Is PCM surround sound?

PCM can carry surround sound, but it cannot do so over an optical cable—the optical cable can only carry stereo PCM (using TOSLINK, the home stereo standard). To send surround PCM, you'd need to use an HDMI cable (or alternatively displayport on a PC), which carries both the video and audio signal.

Related Question Answers

Should I use PCM or Bitstream?

In this case pcm is better and only option. Bitstream is better, but for stereo source it is basically the same, except if your sources pcm decoding is bad somehow. For newer audio formats is bitstream always better. Up to 5.1 sound it's your decision pcm or bitstream, over that choose bitstream.

Is Bitstream better than uncompressed?

The older, more common bitstream formats (Dolby Digital, DTS) feature lossy compression and are limited to 5.1 channels so uncompressed PCM sound is superior. DTS and Dolby being lossy doesn't mean you are gaining anything by first uncompressing them and then passing over.
Sarah Jenkins
Author

Sarah Jenkins

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.