You have the option to choose which type of setting to use PCM vs Bitstream , and as mentioned above, each setting should produce the same audio quality , taking into account the exceptions of Dolby Atmos and DTS:X. This function provides access to audio comments, descriptive audio or other supplementary audio tracks. If access to these audio programs is important to you, keeping your Blu-ray player set to PCM will provide the best quality result.
In this case, your home theater receiver will recognize the signal as Dolby Digital standard and decode it properly. After you determine the audio settings you want to use to transfer audio from your Blu-ray player to the rest of your home theater system, you must also decide what type of connections to use. So after you can determine which audio settings you want to use to transfer audio from your Blu-ray Disc player to the rest of your home theater system, you must also decide what type of connections you need to use.
If you use either the coaxial or optical digital connection option of your Blu-ray player to your home theater receiver very useful if your AV receiver does not have HDMI connections , you can also select the PCM vs Bitstream output options for those connections. The reason for this is that the optical digital cable or coaxial cable does not have sufficient bandwidth capacity to transfer a decoded, uncompressed, full surround sound signal, as the HDMI connection can.
If you are using the optical digital or coaxial digital connection option from your Blu-ray Disc player to your home theater receiver useful if your home theater receiver does not have HDMI connections , you can also select PCM vs Bitstream output options for those connections. The reason for this is that a digital optical or coaxial digital cable does not have sufficient bandwidth capacity to transfer a decoded, uncompressed, fully surround audio signal as an HDMI connection can.
While Bitstream and PCM are very different, these two configurations are very similar when applied in audio production. Here are several similarities to consider when choosing which is the best option for you:. However, there is another factor to consider as to which setting may be best for you to decide in this discussion PCM vs Bitstream.
This involves access to secondary soundtracks, such as audio commentary, descriptive audio, or other supplementary audio tracks. If access to these audio features is important to you then keep your Blu-ray player configured with the PCM audio output option that would be the best choice for you.
Alternatively, you can always switch from PCM to Bitstream at any time by going to the appropriate settings menu. While audio signals are produced differently in both cases, there is no audible difference between Bitstream and PCM files.
However, the Bitstream files are encoded to give you a surround sound experience when used with a compatible media player. On the other hand, most audio players only support the PCM format while transmitting sound. That means you should check the compatibility of your device when choosing between the two. HDMI is easily the best option for output. However, if you use either digital or optical coaxial outputs, Bitstream is the clear winner.
There are a number of factors that should go into your choice, including the quality of your Blu-ray player and audio receiver. More often than not, you will want Bitstream. The potential for greater audio quality and the flexibility to use coaxial outputs puts it ahead of PCM. The only situation where PCM comes out on top is when using secondary audio streams.
If you do not plan on doing this, and your receiver is not severely lacking in quality, go for Bitstream. PCM is an algorithm for representing an analog wave digitally and has been around since the beginning of the s. PCM itself comes in a couple of flavors, regular PCM where quantization levels is a function of amplitude and LPCM where quantization levels are uniformly linear hence linear pulse code modulation. Well, it is just a data file you can call it PCM data file but when it is just referred to as PCM misunderstandings happen and the thing you have to understand is that going from analog to digital is not 1 to 1, going from digital to analog is though so in a broad general sense PCM is a lossy compression algorithm itself.
Pulse Code Modulation, the coded data stream that occurs when analog audio information is converted into digital signals.
The quantization also called resolution indicates how many different digital values a signal can be converted into. This allows 65, different audio information to be represented. In the DVD-Audio standard, the resolution is 24 bit. This allows LPCM can be stored in different quantization or resolutions 16 bit, 20 bit or 24 bit and in different sampling rates or sampling frequencies 48 kHz or 96 kHz. Select basic ads. Create a personalised ads profile.
Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Robert Silva. Robert Silva has extensive experience in consumer electronics and home theater product sales and sales supervision; he has written about audio, video, and home theater topics since Robert has articles published on HBO.
Facebook Twitter LinkedIn. Updated on October 11, Jessica Kormos. Lifewire Technology Review Board Member. Jessica Kormos is a writer and editor with 15 years' experience writing articles, copy, and UX content for Tecca. Article reviewed on Jun 29, Tweet Share Email. In This Article. PCM Basics. Was this page helpful? That means you should select PCM or Dolby Digital in your menu options based on what your setup offers.
The output format you choose when selecting the audio format for your television depends on the equipment you have connected to the television. You may need to create different settings for a home theater system than you would for high-quality headphones. Are you not connecting anything to your television?
You might experience audio loss, volume problems, or additional issues if you choose the alternative environment. You can only choose the options on some televisions that are currently available with your input and output. As a general rule, you should only use the PCM option for your audio if your sound system experiences higher setting problems.
These options might offer even better sound quality or more channels to use in exchange for more bandwidth. If you require Dolby Atmos for your output, most televisions require you to use the automatic setting only. These televisions have proven that they know how to deliver the successful outcomes you want for your audio needs. With over 8. It featured QLED technology to deliver an impressive result, with the Roku app providing instant streaming benefits.
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