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. To reiterate, while audio signals are produced in different ways in both cases, there is no audible difference between Bitstream and PCM files. Your options may be limited for PCM if you’re going to configure your sound system for digital optical audio or coaxial connection. However, the Bitstream files are encoded to give you a surround sound experience when used with a compatible media player. The receiver identifies that it is receiving a PCM Bitstream. 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). PCM transmits a two-channel signal over digital optical or coaxial. Bitstream is a binary sequence—or what we often hear as 1’s and 0’s—that we use when converting audio input into digital bits. Should i have hdmi audio output on the tv as pcm or bitstream? PCM and bitstream may seem very different in terms of the formats that they can produce, but both of these two configurations are capable of delivering high-quality audio. In these two examples, the encoding is done with a loss of quality. If you select Bitstream as the HDMI audio output setting for a Blu-ray player, the player bypasses its internal Dolby and DTS audio decoders and sends the undecoded signal to your HDMI-connected home theater receiver. Which is best, sending PCM or bitstream from the player to the A/V receiver? It will play the lossless core tracks as their lossy DVD counterparts (Dolby Digital 5.1 or DTS 5.1). We write about the world of consumer electronics audio and video. It’s important to know which of these two is better because getting the right configuration for audio helps in getting more from your sound system. Then, if the user decides to use Bitstream as the HDMI audio output setting for their Blu-ray player, the player will bypass its own internal Dolby and DTS audio decoders and send the signal without decoding to their HDMI-connected home theater receiver. Works with players and receivers that support analog and digital sound transmission. Over the years, I have learned a lot about AV equipment and room acoustics. This means that the signal is not additionally source-coded by, for example, DTS or Dolby Digital, and is therefore not converted. Audio files are bit encoded, and it follows a specific surround sound format for digital transmission. For me, PCM is for those who do not use speakers or play with headphones. 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. Can someone please tell me which is the recommemed setting for the playbar and my 5.1 set up as i cant tell the difference. For audio, if you connect a Blu-ray Disc player to a home theater receiver via HDMI, there are two main audio output settings available: Bitstream and PCM (which is also called LPCM). The processor will then decode the file based on the instructions that are in the signal. You want to relieve your receiver from the burden of converting audio files. during one second, the analog signal is sampled 44,100 times and converted into a digital value. On the other hand, bitstream works with coded audio files, but it can support more frequencies, allowing you to produce hi-res audio. However, since the player decodes the audio files, there’s a chance that you may not get the smoothest and lossless transmission, especially if you’re using a more sophisticated sound system for your media room. However, there are also lossless compression methods such as DTS-HD Master Audio or Dolby TrueHD. The receiving system on earth converts the bitstream into viewable TV programs. In this update, we can certify that for the users, there is practically no noticeable difference in quality between PCM and Bitstream (1) (2). Sadly, setting up your sound system will never be as simple as that. If PCM is selected, the PS4 takes over the audio decoding of the sound material and passes it to the AV receiver, which usually outputs it to the speakers unchanged with the specified number of channels. This means that if you set the audio output of your Blu-ray player to PCM, the player will decode the audio of all Dolby/Dolby TrueHD and DTS/DTS-HD Master Audio formats – from the internally related soundtracks and send the audio signal in an uncompressed form to the AV receiver in your home theater.eval(ez_write_tag([[336,280],'planethifi_com-leader-1','ezslot_9',111,'0','0'])); As a result, the AV receiver will not have to perform any additional audio decoding before it is sent to the amplifier section and speakers. Aside from the output, both configurations work well with most DVD and Blu-ray players with no noticeable difference. That means you should select PCM or Dolby Digital in your menu options based on what your setup offers. However, here is what happens when you choose either setting.eval(ez_write_tag([[300,250],'planethifi_com-banner-1','ezslot_4',109,'0','0'])); If you set the Blu-ray Disc player to output audio as PCM, the player performs the audio decoding of all Dolby/Dolby TrueHD and DTS/DTS-HD Master Audio related soundtracks internally. Since PCM is an algorithm, compressed/noncompressed doesn’t make any sense from a technical standpoint, it takes an input and gives you an output and doesn’t care what the data is. Should i have hdmi audio output on the tv as pcm or bitstream? In Planet HiFi I test gear during a couple of days and write a review. The picture above is for the settings of the Devialet Phantom Gold speakers that we reviewed here. However, bitstream files are encoded to give you a surround sound experience when using a compatible media player. Then, it sends the decoded audio signal in an uncompressed form to the home theater receiver. There’s no clear winner of the bitstream vs. PCM debate if we’re only going to compare the output that they can produce. 4. When you select the HDMI input audio in the TV’s setup menu, you’ll typically see PCM or Bitstream offered as your options. the Digital Output Audio format can be change to Dolby Digital which is really amazing but for PS4 the Digital Output Audio format setting is locked at PCM so the only thing I could change in my Samsung Tv when connected to my ps4 is the HDMI input audio format Setting 1. I also write about AV topics, amplifiers, speakers and headphones. When configuring an audio system for the first time, many individuals opt to compare PCM vs Bitstream. LPCM can transmit up to eight channels. PCM works well with almost every device, whereas bitstream may only work for devices that support hi-res surround sound format. Both transmission methods can provide you with a hi-res output if we use mainstream sound systems. I view Blu-ray and DVD discs about 50/50; certainly Blu-ray when available. You’re using a receiver that offers better audio processing power. What that actually is and which setting delivers the better sound is revealed here. Although you have fewer options when using bitstream for audio transmission, the sound output barely differs from PCM, and may, in fact, even provide you with more frequencies. The home theater receiver will do all the audio decoding of the incoming signal. 3. Hi, I've just bought an UE40MU6470 (U.K. model) and connectd to my Onkyo 7.2 reciever via HDMI ARC. The difference between PCM and Bitstream is in regards to the device utilized for decoding the compressed format to retrieve the uncompressed PCM data. PCM (Pulse Code Modulation) and bitstream are two industry standards of sending audio from the player or transmitter to the receiver or speaker. PCM uses raw signals that your converter generates, and codecs, such as DTS or Dolby Digital, won’t affect its quality. You’re looking for a way to unlock high-quality secondary audio. If the file uses hi-res secondary audio formats such as Dolby TrueHD, DTS-HD, or higher, the receiver will downgrade it to Dolby Digital or DTS because it’s trying to squeeze both types of formats into the same bandwidth. After all, it is designed for such cases. Since PCM has been around since the beginning of the 1900s, it has become the industry standard for audio streams. 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. Hi, I’m Jason. As a result, the receiver will display Dolby, Dolby TrueHD, DTS, DTS-HD Master Audio, Dolby Atmos, DTS:X, or another format on its front panel display depending on which type of bitstream signal is decoded. As a result, in this case, the AV receiver will display on its main display the tags Dolby, Dolby TrueHD, DTS, DTS-HD Master Audio, Dolby Atmos, DTS:X, etc… depending on what type of Bitstream signal is being decoded.eval(ez_write_tag([[250,250],'planethifi_com-leader-2','ezslot_12',113,'0','0'])); It should be noted that the Dolby Atmos and DTS:X surround formats are only available from a Blu-Ray player via the Bitstream option. But making an informed decision will be easier once you’ve educated yourself on the subject. In general, however, the AV receiver is usually the better choice. One of the reasons is because PCM can only transmit a two-channel signal over a coaxial or digital optical connection. The choice to use bitstream for your sound system would depend on how you want it to work, and whether various configurations can give you an edge over PCM. Many people will still hear the same sound quality from PCM and bitstream if they’re not using high-end receivers with better processing capability. This type of connection is available on most CD players. Compatible with high-end modern players that fully supports most surround sound formats. HDMI is easily the best option for output. Since PCM is an algorithm, it won’t matter whether you’re sending compressed or uncompressed audio files. The process of converting audio files may differ, but it’ll always end up in an analog format before your speakers can read it. Dolby and DTS are digital audio formats that use coding to compress the information so that it fits all the surround-sound audio information digitally onto a DVD or Blu-ray disc. 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). Players handle the decoding of audio files, then transmit the data to the receiver for output. The quality of the audio file that your player or receiver converts is the most significant difference between the two—don’t get confused with output quality with file quality. With different options on your TV, choosing between PCM, bitstream, and Dolby can be confusing. All PCM audio may have been resampled to 16/48 in older builders as well. In terms of sound quality, whether you set the Blu-ray Disc player's HDMI audio output PCM or bitstream … It requires a high-quality receiver to achieve better results. Alternatively, you can always switch from PCM to Bitstream at any time by going to the appropriate settings menu.eval(ez_write_tag([[250,250],'planethifi_com-leader-4','ezslot_14',120,'0','0'])); While audio signals are produced differently in both cases, there is no audible difference between Bitstream and PCM files. You’re using a sound system that favors the decoding of audio files from the player. 16-bit word width is standard for the CD. Almost every device that converts digital to an analog audio output, and vice-versa, uses this technology to deliver audio files. My ps5 is set to AV receiver/5.1/LPCM. Why is bitstream or unprocessed audio output not available through the hdmi on my oled tv (oled55b7p)? if I have my LG CX set to passthrough then set PCM under "HDMI input audio format" some times when i turn everything on audio will correctly be 5.1 or sometimes incorrectly be stereo. Audio quality is partially determined by the player (Blu-ray player or any player). The player will simply transmit digital signals to your receiver, which will be responsible for decoding and converting it. Provided it also supports the sound codec set on the PS4. As a result, the receiver will display Dolby, Dolby TrueHD, DTS, DTS-HD Master Audio, Dolby Atmos, DTS:X, etc…on its front panel display, depending on the type of bitstream signal being decoded. Then, depending of your setup, you may have to use a compressed format via bitstream, especially with optical cable which is old and irrelevant nowadays, in order to enjoy more than 2.0 audio. As a result, your AVR doesn’t have to do anything with the audio file once it receives the input. We review all kinds of audio and video gear with complete independence from the manufacturer. Seems to always work when "HDMi input audio format" is set to bitstream. There are several recording modes with different resolutions (8, 12, 16, 20 and 24 bit) and different sampling rates (32kHz, 44.1kHz, 48kHz, 88.2kHz, and 96kHz) for LPCM. As a result of this setup, the player does all the work, providing you with untethered access to secondary audio, which is responsible for descriptive audio, audio commentaries, and supplementary audio tracks.
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