![]() Dolby TrueHD – 7.1ch maximum sound at 18 Mbps (lossless quality available on Blu-Ray discs)Ĭomparing DTS and Dolby Digital in consumer applications reveals that both standards are closer in terms of audio performance.Dolby Digital Plus – 7.1ch maximum sound at 1.7 Mbps (supported by streaming services like Netflix).Dolby Digital – 5.1ch maximum sound at 640 Kbps (common in DVDs).DTS HD High-resolution – 7.1ch maximum sound at 6 Mbps.DTS HD Master Audio – 7.1ch maximum sound at 24.5 Mbps (lossless quality).DTS Digital Surround – 5.1 maximum channel sound at 1.5 Mbps.Here’s a breakdown of the various versions you’ll find in each standard and their bit rates. What this means is that DTS has the potential to produce better sound quality than Dolby Digital. In theory, the lesser the compression used in the encoding, the more realistic the sound becomes as it better represents the original source. Due to the higher bit rate supported by this format, DTS requires significantly low compression of about 4:1. However, that bit rate is limited to approximately 768 kilobits per second on DVD video. To squeeze in all the relevant data, Dolby Digital employs a variable compression of around 10 to 12:1. DTS surround sound, on the other hand, applies a maximum raw bit rate of up to 1.5 megabits per second. The maximum bit rates that Dolby Digital can support for DVD Video and DVD audio is up to 448kbits/s. However, the 640kbits/s is only applicable to Blu-Ray discs. Dolby digital compresses 5.1ch digital audio data down to a raw bit rate of 640 kilobits per second (kbps). The main difference between DTS and Dolby Digital is seen in the bit rates and compression levels. DTS also has a lossless version, DTS-HD Master Audio, that supports 7.1 channels speaker setup.ĭifferences Between DTS and Dolby Digital The lossy version takes up very little space on Blu-Ray discs. Dolby, for example, has a lossless version, Dolby TrueHD, and a lossy version, Dolby Digital Plus. Some versions of Dolby Digital and DTS are “lossy” which means they have a degree of audio degradation from the original source while others are lossless. ![]() For instance, DTS and Dolby Digital use compression to save space either on the disc, as is the case with Blu-Ray and DVDs or on streaming bandwidth for services like Netflix. Both DTS and Dolby Digital provide surround sound codecs for 5.1, 6.1 (rare) and 7.1 setups where the first number represents the number of small surround speakers, and the “1” is a separate channel for a subwoofer.īoth formats utilize “perceptual” data reduction techniques to remove useless data in PCM signal output, thereby preserving high fidelity sound. In addition to the 5.1 to 7.1 speaker playback, different formats offer cutting edge audio technology geared toward enhancing the sound quality. DTS stands for Digital Theater Systems, a popular home theater audio format that was developed in 1993 as a competitor to Dolby Labs in the development of surround sound audio technology for movie production. What Are DTS and Dolby Digital?ĭolby Digital is the name for audio compression technology developed by the Dolby Labs. So which one of these two multi-channel sound formats is more superior? Read on to find out. In its defense, Dolby maintains that their codec is more efficient and thus can operate at a lower bit rate. Others argue that Dolby Digital is far more advanced and so is its sound quality. This reasoning arises probably because DTS surround sound is usually encoded at a higher data rate than the corresponding Dolby formats.
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