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Friday, September 30th, 2016
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| 9:00a | The SilverStone SX700-LPT SFX 700W PSU Review In the interest of minimizing space and noise, living room gaming PCs often require compact, high performance PSUs. Today we are taking a look at the SX700-LPT from SilverStone, an 80Plus Platinum certified SFX PSU with a power output of 700 Watts. As a result of its total capacity and its high efficiency, this makes the SX700 the most advanced consumer SFX PSU available today. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 10:30a | Roku Unveils 2016 Streaming Media Players with 4Kp60 and HDR Support
Roku this week introduced a new family of five streaming media players for various needs and customers. The new affordable players support 1080p HD video streaming and some of them are even compatible with older TVs with composite inputs. The more advanced players support streaming of 4Kp60 content (3840x2160 resolution at 60 fps) and the high-end models even supports HDR10 metadata, which will be useful for those who would like to watch 4Kp60 HDR video and have appropriate TVs. The fifth generation Roku streaming media players run the proprietary Roku OS and support dozens of video streaming services, including those from Amazon, BBC, Google, HBO, Hulu, Netflix, Vudu and so on. The set-top-boxes are self-contained devices that are connected using an HDMI input to TVs and can be operated using bundled remote controls. Depending on video output capabilities and feature set, pricing of the new players ranges from $30 to $130.
The most affordable STBs from the new lineup are the Roku Express and Roku Express+ players, which connect to 802.11n Wi-Fi, support up to 1080p video and retail for $30 and $40, respectively. The Roku Express+ version is especially notable here as it's the only new player from the company in the last two years to support RCA composite video for older, pre-HDMI televisions. Meanwhile the Roku Premier series complements the company’s Streaming Stick product released earlier this year, which has similar capabilities, but is more portable and expensive ($50). The considerably more advanced Roku Premiere, Roku Premiere+ and Roku Ultra are based on more powerful SoCs with four CPU cores to enable 4Kp60 video decoding as well as additional functionality. Furthermore, the premium players also feature Wi-Fi 802.11ac MIMO dual-band connectivity. Among the higher-end players, the Roku Premiere+ and the Roku Ultra also support displaying HDR video via the HDR10 standard (but note that Dolby Vision is not supported). In addition, both players are also equipped with microSD card readers for additional channel storage and USB ports for local playback. The baseline 4Kp60 Premiere STB goes for $80, while the HDR-capable Premier+ player costs $100. Meanwhile, the top-of-the-range Roku Ultra is available for $130. For additional $30, owners will get a more advanced remote with a speaker (for the lost remote finder feature), a digital optical audio port as well as improved support for lossless audio formats like ALAC or FLAC (but no Dolby Atmos). The new Roku Express, Roku Premiere, Roku Premiere+ and Roku Ultra STBs will be available in stores on October 9 and can be pre-ordered immediately. The Roku Express+ will be sold exclusively at Walmart. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 12:00p | USB-IF Publishes Audio over USB Type-C Specifications
The USB Implementers Forum this week published the USB Audio Device Class 3.0 specification, which standardizes audio over USB Type-C interface. The new spec enables hardware makers to eliminate traditional 3.5mm mini-jacks from their devices and use USB-C ports to connect headsets and other audio equipment. Makers of peripherals can also build their audio solutions, which use USB-C instead of traditional analog connectors. Developers of the standard hope that elimination of mini-jacks will help to make devices slimmer, smarter and less power hungry. The industry, led by Intel and some other companies, has been mulling about replacing the traditional 3.5mm mini-jack connector for some time now. The main motives for replacement were necessity to simplify internal architecture of devices by removing analog and some audio processing components from the inside (which leads to further miniaturization), minimize the number of external connectors, improve power management as well as to add smart features to headsets and other audio equipment. We discussed USB Type-C Audio Technology briefly earlier this year and mentioned that this isnot the first time that the industry has tried to use USB instead of the good-old mini-jack. The important difference between contemporary initiative and attempts in the past is the fact that today the primary goal is to replace the 3.5mm jack in portable devices.
As reported, the USB Audio Device Class 3.0 specification supports both analog and digital audio. Analog audio is easy to implement and it does not impact data transfers and other functionality of USB-C cables since it uses the two secondary bus (SBU) pins. Some device makers may find analog audio feature of the standard as a relatively simple way to add certain smart capabilities to their headsets without major redesign of hosts. While analog USB-C audio will not help to shrink dimensions of portables, it could be particularly useful for non-mobile devices, where miniaturization is not crucial, but where port space is at a premium or where additional features either make sense (infotainment, sport equipment, etc.) or are fundamental (VR HMDs). The USB ADC 3.0 defines minimum interoperability across analog and digital devices in order to avoid confusion of end-users because of incompatibility. In fact, all ADC 3.0-compliant hosts should support the so-called headset adapter devices, which allow to connect analog headsets to USB-C. However, digital audio is one of the primary reasons why companies like Intel wanted to develop the USB-C audio tech on the first place, hence, expect them to promote it.
According to the USB ADC 3.0 standard, digital USB-C headphones will feature special multi-function processing units (MPUs), which will, to a large degree, define the feature set and quality of headsets. The MPUs will handle host and sink synchronization (this is a key challenge for digital USB audio), digital-to-analog conversion, low-latency active noise cancellation, acoustic echo canceling, equalization, microphone automatic gain control, volume control and others. Such chips will also contain programmable amplifiers and pre-amplifiers, which are currently located inside devices. Besides, USB ADC 3.0-compatible MPUs will also support USB Audio Type-III and Type-IV formats (the latest compressed formats), but will retain compatibility with formats supported by ADC 1.0 and 2.0. Finally, among the mandated things set to be supported by USB-C Audio devices are new Power Domains (allows devices to put certain domains in sleep mode when not in use) as well as BADD (basic audio device definition) 3.0 features for saving power and simplified discovery and management of various audio equipment (each type of devices has its own BADD profile).
Over the past few months, Conexant has introduced three USB-C Audio MPUs (1, 2) for headsets, docking stations and other equipment. Assuming that these chips are compliant with the USB ADC 3.0 specs from a hardware standpoint, and the software is ready, actual devices featuring USB-C Audio could arrive in the coming months. Pricing of the first USB ADC 3.0-compliant MPUs is unknown, but in general MPU ICs do not cost too much. Moreover, as developers adopt smaller process technologies and a larger number of such chips hit the market, their prices are going to depreciate. In the end, it will be interesting to see where digital headphone prices end up. The MPUs will definitely add to the total bill of materials for a set of headphones, but at the same time they add new functionality as well, so the big question is how manufacturers then factor all of that into device pricing. A number of companies, including Apple and LeEco, have already introduced smartphones that do not use traditional mini-jacks, and Google added support for USB DAC devices to Android over a year ago. The finalization of the USB ADC 3.0 spec, introduction of USB-C audio ICs, as well as design decisions of smartphone makers demonstrate that the industry is trying to eliminate 3.5mm jacks from mobile devices. The big question is whether the rest of the industry plans to do the same. It is true that portables are primary devices for music listening for many people. However, there are tens of applications which still rely on analog connectors, and hundreds of millions of people who use them either to consume or create content. To eradicate 3.5mm jacks completely, USB-C Audio promoters will have to work with thousands of vendors and this takes time. Consequently, it is too early to say that this is the end for the good-old mini-jack. Images by Conexant, USB IF. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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