In a previous blog I discussed the new DSP capabilities of the xCORE-200 architecture at a very high level. I'd now like to look at some of those DSP capabilities in more detail.
XMOS xCORE-200 devices are built around a 32-bit fixed point architecture, which includes a 64-bit accumulator for enhanced dynamic range. This architecture was chosen because it gives flexibility to implement many different forms of fixed-point and integer arithmetic efficiently.
Accurate, accessible and economical Voice User Interface (VUI) design has been slow to emerge. Our ability to interpret dialogue of varying pronunciation, accent, speed and grammatical correctness is something that we humans take for granted from an early age, but that has proved elusive for machines. Nonetheless, VUI has become a mainstay of our predicted future - who can forget HAL 9000 or the "Talkie toaster" (immortalized by Grant Naylor in the BBC TV series "Red Dwarf"? http://www.youtube.com/watch?v=LRq_SAuQDec)
Designing electronic products today is a highly complicated challenge that goes well beyond the old question of "How many MIPS does the microprocessor have?" Designers must solve the fundamental requirements of their products, while meeting strict international standards, and integrating innovative features to support IoT (Internet of Things) technologies. And consumer products also need to be fashionable as well.
Welcome to our latest guest blog, where XMOS customers discuss their experiences of using xCORE multicore microcontrollers.
Joining us this time is Dominic Baker, Technical Director at Cambridge Audio.
For more than 40 years, UK-based Cambridge Audio has been at the forefront of hi-fi innovation, designing and building a range of award winning products for music lovers. Each product is designed to deliver the best performance and sound quality from a range of sources.
Back in March of this year we announced a first for XMOS … a dedicated audio processor, called xCORE-AUDIO Hi-Res 2. Well we’ve had the samples back in our lab for a while now and the device is now ready to be let out into the wild. Here at the factory we are very excited about the new development.
So what is xCORE-AUDIO Hi-Res 2?
Simply put it’s a dedicated audio processor which offers high resolution stereo (hence the 2 … clever eh?) audio interfacing for consumer audio applications such as DACs and headphone amplifiers.
Welcome to the second in our series of featured guest blogs, where XMOS customers discuss their experiences of using xCORE multicore microcontrollers.
This time out we talk with Thorsten Loesch, Director of Technology for iFi Audio.
Welcome to the second instalment of our Hi-Res Audio Formats overview. In the fist instalment we looked at the Liner PCM (Pulse Code Modulation) encoding scheme used on CDs and which continues to dominate the digital audio world today. If you missed it, you can read the blog here.
Today we are going to look at the other primary format for high resolution audio files, DSD or Direct Stream Digital.
PCM remained as the dominant encoding technique for digital audio until the introduction of the Super Audio CD (SACD) in 1999 which used DSD to encapsulate a higher resolution layer alongside an optional CD layer with the familiar 16-bit, 44.1kHz PCM encoding.
This is the first instalment of a two part blog, which provides a brief introduction of audio formats that have emerged since the 1980s.
Why the 1980s? Nothing to do with frilly shirts and leg-warmers, it was when the tide firmly changed from analog to digital audio. Sure, analog audio still existed in the 1980s (and continues even now) but the focus of technology development switched firmly to digital.
Welcome to the first in our series of featured guest blogs, where XMOS customers discuss their experiences of using xCORE multicore microcontrollers.
First up we talk with Jason Liao, CTO and VP Product Development of OPPO Digital, Inc. OPPO Digital designs and market high quality digital electronics that deliver style, performance, innovation, and value to A/V enthusiasts and savvy consumers alike. OPPO’s attention to core product performance and strong customer focus distinguishes it from traditional consumer-electronics brands.
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Dominic Baker, explains how UK-based Cambridge Audio use xCORE multicore microcontrollers to keep at the forefront of hi-fi innovation, delivering the best performance and sound quality from a range of sources.
Thorsten Loesch, Director of Technology, iFi Audio, talks about using XMOS in their multi-award winning audio products.
Jason Liao, CTO and VP Product Development of OPPO Digital, talks about the key features he looks for when choosing a USB Audio supplier.
Arny Kruger tests Hi-Res Audio files, Cambridge Audio explain why they use XMOS silicon, while Radius stream hi-res audio from Apple App Store.
Who gets a "Greatest Bits" award, NuPrime's first DAC/HPA after Optima's acquisition, and a collaboration between AKG and Quincy Jones.
What do London, the Moon, Italian design and your favorite Blade Runner character have in common? Innovative Hi-Res Audio products.
xCORE-AUDIO Hi-Res 2 audio processor now available, Streaming Hi-Res Audio to become the norm, Audient iD14 wins Future Music Platinium award
Best of old and new audio formats in a single device, Foo Fighters back Hi-Res Audio, Matterhorn inspires Astell & Kern AK500N
How old is Hi-Res Audio, use Dropbox as streaming service, free Hi-Res Audio editor.
Crowdfunding helps bring new products to market, including DACs/headphone amplifiers.
With the launch of Apple Music, find out what else is happening with Hi-Res streaming.
Latest Press Releases
- Multicore Microcontrollers Enable Gigabit Ethernet Internet of Things for Under $5
- $2 Chips Deliver High Resolution Audio to consumer applications
- AVnu Alliance announces first certified audio endpoint reference platform
- New development system includes real-time hardware debug, industrial Ethernet and Fieldbus capabilities
- XMOS powers AVB and USB in Revolabs Executive Elite