Q5™ Sample Rate Converter White Paper [Feb 2007] PDF Download - [980 KB]
With the proliferation of digital media formats, today’s multimedia devices incorporate a complex software framework that manages the interoperability between the vast array of audio and video standards. Conversion and compatibilities between CD, SACD, DVD, and MPEG based formats needs to be handled by any such modern player, where sample rates of encoded audio can range anywhere from 8 to 192 kHz. As quality requirements can now vary between speech and DVD-Audio in a single integrated system, a scalable process for format and sample rate conversion is an integral part of such devices. The ideal sample rate converter should not only be of extremely low complexity, it would also be able to adapt to the system requirements and deliver outstanding performance leading to robust designs with flexible, programmable and re-configurable interfaces. ANAGRAM Technologies patented Q5 sample rate conversion technology does exactly that. Thanks to its novel digital filter, highly scalable kernel, and high level of software re-configurability its complexity is extremely low while offering high performance. This white paper aims to explain in more detail Q5 sample rate conversion. | |
Q5™ Upsampling White Paper [Feb 2007] PDF Download - [1'210 KB]
With the introduction of the CD-format in 1983, Sony and Philips revolutionized the world of music. By moving audio storage and processing into the digital domain, a whole new level of performance in sound recording, mixing and playback could be achieved. Today, the iPod has once again revolutionized music by creating single-click access to downloaded music content, anywhere, anytime. However these advances have also represented a radical paradigm shift for audio engineers. In this paper we explain how the application of ANAGRAM’s Q5 Upsampling to high performance digital audio systems with integrated digital to analog converters provides best-in-class performance while reducing system complexity. We first give a reminder on jitter and synchronisation when applied to digital to analog conversion and then introduce the Q5 Upsampling technology and its application for the considered case. | |
Cambridge Audio 840C (Winner of 'Best CD Player ÂŁ500 - ÂŁ1000') [October 2006] PDF Download - [2.09 MB] PDF Download - [4.5 MB]
"... a genuinely innovative CD player of extraordinary ability given its price point. Its sound is beautifully subtle and refined - truly, an 'open window' on the music being played." One of the most involving and rewarding music replay machines we've come across at such a sensible price and an excellent partner to the fine 840A amplifier. There simply isn't a CD player at the price that offers anywhere near as much! | |
Bob Adams: Upsampling — Can You Really Change the Past? [August 2006] Link to story
While the music industry has always been pushing new, higher resolution formats, what does that do to folks like us who have a ton of content in the old format? One of our 3rd party developers has developed a technique that allows existing "standard" CDs to have the enhanced audio clarity, richness and dynamic range that would normally be associated with SACD or DVD-A disks, "upgrading" the tremendous investment that you've already made in high quality CD recordings. ... | |
Analog Devices Customer Success Story [July 2006] Link to story
England's Cambridge Audio has long been at the forefront of British hi-fi, delivering some of the industry's most innovative and technologically advanced products to consumers for nearly forty years. The company's Azur CD players – and indeed other hi-fi and home cinema separates – have received critical acclaim from the world's leading hi-fi and home-cinema consumer and trade magazines as well as the national press. However in the case of the 840C – the company's foray into mid- to high-end CD players – Cambridge Audio chose to partner with external technology specialists to help add differentiation to its flagship model ... | |
Q5™ Sample Rate Converter AES [May 2006] PDF Download - [408 KB]
A scalable real-time asynchronous sample rate converter software kernel is presented that offers a flexible alternative to the usual hardware implementations. The kernel is dynamically configurable at run-time and supports almost arbitrary up-sampling or down-sampling ratios and any number of channels. Due to its scalability this sample rate converter kernel may be used both for low complexity, cost-sensitive implementations as well as for top performance applications. In a typical high performance application, sample rates of 384kHz are easily achieved on a low cost DSP and DSD input data streams are also supported for compatibility with SACD. |
