Dolby Atmos Explained

Dolby Atmos Explained Dolby Press Release: Dolby Atmos®, the revolutionary cinema sound technology, has come to home theaters. With Dolby Atmos, content creators can precisely place and move sounds anywhere in your living room, including overhead, to make entertainment incredibly immersive and lifelike. This white paper is designed to explain how Dolby Atmos will work in home theaters and how you can build a Dolby Atmos enabled system or upgrade your existing system to support Dolby Atmos. This paper also explains the technological components of Dolby Atmos in home theater and the tools that content creators and broadcasters will use to create and deliver Dolby Atmos content to homes. Why replace channel-based surround sound? Dolby Atmos is a revolutionary technology that moves beyond the paradigm [...]

2017-11-29T19:26:34+00:00November 26th, 2017|Sound|

Understanding receiver and amplifier power

Understanding receiver and amplifier power It’s no secret that it takes a lot of knowledge to truly understand the world of home audio, which is littered with confusing numbers and terms. Wattage, current, distortion, frequencies, and impedance are just a few of the specifications anyone looking for an amplifier of home theater receiver is going to come across. With the thousands of choices in each category, it takes a little bit of background to use these specifications to make a great choice. In this primer from TechLore, we take a look at the power specifications of amplifiers and receivers. In Steps the Watt Evaluating and stating the wattage of an amplifier has become the single most important number to the amplifier shopper. Unfortunately, wattage is [...]

2017-11-29T19:27:17+00:00November 26th, 2017|Sound|

THX Overview

THX Overview What is THX? And how does it relate to Dolby Digital and DTS Digital Surround? First, it is important to realize that THX is a quantitative measure of quality that works in conjunction with the different surround sound formats (e.g., Dolby Digital and DTS) to bring the quality of the sound presentation to the highest standards. To ensure the highest possible quality in home cinema, THX defines stringent picture and sound track criteria for film-to-DVD (and film-to-VHS) transfers. Such DVD titles are labeled as "THX Digitally Mastered for superior sound and picture quality" or simply "THX Certified". THX also defines stringent performance standards for audio/video source and processing components. These include strict performance standards for DVD players, receivers, preamplifiers, power amplifiers, speakers, interconnect [...]

2017-11-29T18:44:42+00:00November 26th, 2017|Sound|

Whole House Music Systems

Whole House Music Systems OVERVIEW Of all the electronic amenities available to a new home, none are quite as enjoyable as a whole-house music system. Distributing tunes from one stereo system to speakers in far corners of a house is nothing new. Handy homeowners have been stringing wire from their stereo receivers to new speakers for years. But there is a limit to how many speakers a standard stereo amplifier can support. Plus, you may have to hoof it back to the stereo system to adjust the volume or switch from a CD player to a DSS receiver. As long as your home is unfinished, invest in a whole-house music system that's convenient to use and safely transports songs without blowing up an amp. There [...]

2017-11-29T19:29:59+00:00November 26th, 2017|Sound|

Speaker Technology Primer

Speaker Technology Primer By Thomas J. Norton Speakers are available in a bewildering variety of styles, sizes, and technologies. On the technical side, the vast majority are conventional box designs using one or more drivers—most commonly a single cone woofer for the bass and midrange, a single dome tweeter for the treble, and a crossover network to divide and route the appropriate frequencies to each. The speaker cabinet, or box, which can be either a sealed or ported design, is not merely a cosmetic touch; it is a key element in the design. Without a properly designed cabinet, even the best conventional woofer would simply flap in its own breeze and produce little or no bass. Like everything else in audio, there are so-called open-baffle [...]

2017-11-29T18:55:04+00:00November 26th, 2017|Sound|

Surround Sound Formats

Surround Sound Formats Today Despite the heavy emphasis on video over the past 15 years, the evolutions of home audio and video have actually taken nearly identical paths. Looking back on the home A/V market in the mid 1990s the industry began a transition away from the VCR and its low-resolution video and Dolby Pro Logic audio technologies into the DVD optical disc format. As everyone knows the DVD format offered consumers an improved picture with 480 lines of resolution and progressive deinterlacing options. It also offered a choice of audio formats that included standard PCM stereo, Pro Logic and discrete multichannel DTS and Dolby Digital. As the decade of the 1990s drew to a close the video category moved onto high-definition (HD) video, while [...]

2017-11-29T18:57:13+00:00November 26th, 2017|Sound, Video|

Room Accoustics

Room Accoustics Rooms resonate just like organ pipes. The room is an unwanted extra instrument playing along with the musicians. The design goal for a good music room is to minimize this coloration, which is strongest at bass frequencies between 20 and 200 Hz. At higher frequencies the room still has an influence, but resonances are much less of a problem since it is much easier to obtain high absorption at higher frequencies. This section deals with acoustic design within the subwoofer band of roughly 20-100 Hz. The advent of high speed digital signal processing has raised the possibility of correcting room acoustics with a digital filter. Some of the available systems are noted in the section on signal processing. Both measured and calculated results [...]

2017-11-29T18:58:15+00:00November 26th, 2017|Sound|