Dolby Atmos Vs Dolby Digital vs Dolby Digital Plus: Which is Better?

When it comes to buying home theater systems you might have heard of Dolby Atmos, Dolby Digital and Plus. These are some technologies that you may always be confused about.

Since you can’t listen to every sound at your home and decide which one could be better, we came up with single article explaining all technologies and which is better.

Today, we’re gonna discuss Dolby Atmos vs Dolby Digital and Plus which one would be better with explaining all technologies.

Dolby Atmos

Dolby Atmos

The Dolby laboratories introduced and installed this technology in 2012. It is a surround sound technology that expands its systems by adding in-ceiling, height channel speakers to allow the sound to be perceived as three-dimensional objects.


Depending upon the theatre capabilities, you can distribute about 128 audio tracks. Each channel corresponds to an audio object.

The Dolby atmos enable the dynamic rendering of loudspeakers. The first generation technology of the Dolby Atmos supports up to 64 speaker feeds and 128 audio tracks.

Even though this system initially came to existence only to the commercial cinemas, later it is made compatible with the home theatre speakers.

The perfectly mounted ceiling height channels deliver the absolute panning of selected sounds such as helicopter flying over or rain.

The Dolby system has the capacity to deliver a unique feed to each and every loudspeaker based on its location.

Home Theatre Implementation

Later on, by 2014, the manufacturers introduced Dolby atmos to the home theatre speakers.

The products included premium receivers and preamplifiers.

The Dolby Atmos technology in the home theatre lacks the processing power and have limited bandwidth when compared to commercial cinema establishments.

So they introduced Dolby Digital Plus and Dolby TrueHD to the home theatres.

You may like: 12 Best Home Theater Systems(All Budget/Dolby TrueHD)

Dolby Digital

Dolby AC-3 or Dolby Digital is an audio compression technology ie. it reduces the significant amount of data that is required for producing a high-quality sound.

The Dolby digital has a maximum of 5.1 channel support which has a rate of 640 kilobits/s. With the limited amount of data, the Dolby digital promises us to provide audio with good fidelity.

It is most widely used across platforms such as digital cables, CDs, DVDs, gaming consoles.

The CD, DVD that supports Dolby digital are marked with a Dolby logo. There might be a degradation in the quality of the output accounting for the compression level.


The algorithm in the Dolby digital accounts for the way that the human ear process a sound.

The Dolby digital can be implemented in CD, DVD, HDTV, and digital cables.

They provide five channels of full bandwidth and a channel with a low-frequency effect for speacial sound effects.

It has been selected as a standard for Digital Television has it as the downmixing feature, ie it has the ability to use a single audio streaming video.

The Dolby digital is limited to 5.1 channels and has a satellite receiver to deliver a Dolby digital output.

Got Low Budget: 11 (Best-Selling) 5.1 Home Theater System Under 10,000

The five channels with full bandwidths include 

  1. Front left channel
  2. Front right channel
  3. Center channel
  4. Surround left channel
  5. Surround right channel 

Dolby Digital plus

The Dolby digital plus/ Enhanced AC-3 is a digital audio compression technology. Like Dolby digital, it is also based on the lossy stream format.

It has an increased ability to deliver high-quality sound from smaller data files. The transmission rates of the digital plus vary from 96 kbps to 6 Mbps.

It supports a wide range of data rates and multiple programs and tools.

It supports 15 channels of full bandwidth with a bit rate of 6.144 megabits/s. It is also backward compatible.


The transmission of Dolby digital is established via an HDMI connection. An HDMI connection is required as the digital and coaxial ires cannot offer higher bandwidths to compensate for high bit rates delivered by the Dolby digital plus.

The Dolby digital plus is designed in a way that it supports variable bit rates.

It is built with much better coding so that it produces better sound for fewer data. It is compatible with the od receivers as it is backward compatible.

Dolby atmos vs Dolby digital plus: Which is Better?

The former is the name of the effective surround sound technology whereas the latter is a sound compression scheme. Dolby atmos have no much processing power ad hs limited bandwidth.

The Dolby digital designates upto 5.1 or more channels and the speakers are arranged horizontally, whereas, in the Dolby Atmos system, the speakers can be arranged horizontally and vertically.

Finally, The Dolby digital is a speaker-based system that is compatible with the HDMI interface and used in streaming applications and the Dolby Atmos is an object-based system in 3D space.

About Sachin Verma

Hi there, I am Rahul Sharma, a gadget enthusiast, home & kitchen appliances guide, and professional reviewer in this Home improvement industry. Help you make your home smart and convenient to live with various home appliances & tips.

Leave a Comment