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  Friday - September 03, 2010
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Zenph Re-Performance Comes to iTrax
by Mark Waldrep
Rachmaninoff plays Rachmaninoff
Artist: Sergei Rachmaninoff

A few months ago, I received a phone call from Dr. John Q. Walker, the Chairman and founder of Zenph Sound Innovations, based in Raleigh, North Carolina, a company that has developed important, new music technologies and a line of award-winning recordings of classic performances. I had heard of the work that Zenph was doing in the area of "re-performances" of famous pianists and their recordings. I had even heard the Gould recordings and was thrilled at the sonic quality and interpretations of his 1955 Goldberg Variations. Zenph Sound Innovations has received rave reviews of their Glenn Gould and Art Tatum releases on Sony Masterworks and I was well aware of their work.


It was a welcome surprise to find that John was aware of my audiophile label AIX Records and iTrax.com. He wanted to know if I would be interested in releasing the latest project from Zenph, the re-performance of "Rachmaninoff plays Rachmaninoff" in any format other than standard definition compact disc. Sony Masterworks has limited their release to the CD version, which had received rave reviews from Stereophile and The Absolute Sound, but were not going to issue a high definition disc. They had agreed to let Zenph partner with iTrax.com for the HD Surround tracks. Very good news for those of us that are addicted to high definition sound and surround mixes.


Of course, I was thrilled at the chance to partner with Sony Masterworks and Zenph, and become the home of this important recording…in HD Surround!


So what exactly is a re-performance? This is the explanation provided on the Zenph website:


"Author Kevin Bazzana refers to our process as a “live realization of the original interpretation.” Zenph(R) Studios takes audio recordings and turns them back into live performances, precisely replicating what was originally recorded. Our software-based process extracts every musical nuance of a recorded performance, and stores the data in a high-resolution digital file. These re-performance files contain the details of how every note in the composition was played, including pedal actions, volume, and articulations – all with millisecond timings.

 

These re-performance files can then be played back on real acoustic pianos fitted with sophisticated computers and hardware, letting the listener “sit in the room” as if he or she were there when the original recording was made. Most importantly, the re-performance can be recorded afresh, using the latest microphones and recording techniques, to modernize monophonic or poor-quality recordings of beloved performances.

 

Important to this process is the use of high-resolution data. Those familiar with the MIDI specification (now more than 25 years old) may know that regular MIDI isn’t really sufficient for capturing and replicating fine nuance. It’s like the difference between regular TV and high-definition TV. The high-resolution specs we’re using vary among instruments, but all offer 10 bits of data to preserve the velocity of each key (compared to 7 bits in regular MIDI), as well as detailed information about the key and pedal positioning.

 

We feel the word “re-performance” summarizes this technique perfectly."

 

The ability to convert older recordings with limited fidelity into high-resolution re-performance data, and then to newly record them with state-of-the-art audio equipment AND to deliver them in full HD surround to music consumers is a transformative event in the history of recordings.

 

I've been fortunate to be able to compare the Rachmaninoff tracks played from the standard-resolution CD and from the HD surround files here in my studio. While the sonic quality of the CD is absolutely first class and up to the full capabilities of that format, the clarity and sense of spaciousness offered by HD surround offers a completely different perspective.

 

The addition of Zenph Sound Innovations' "Rachmaninoff Plays Rachmaninoff" to iTrax.com is a huge step forward for those seeking REAL HD recordings and for the future of our site. I'm extremely happy to be able to feature this album in our iTrax.com catalog and I look forward to adding new items as they become available. Thanks John for believing in iTrax.com!

 
Gershwin: Piano Concerto in F, Rhapsody in Blue, Cuban Overture
Jon Nakamatsu & Rochester Philharmonic
C.P.E. Bach: Symphonies Nos. 1-4
Andrew Manze & The English Concert
Rachmaninoff plays Rachmaninoff
Sergei Rachmaninoff
AIX Demos at AXPONA
by Mark Waldrep

AIX Demos at AXPONA

The inaugural AXPONA (Audio Expo North America) was held last weekend in Jacksonville, Florida and AIX Records was featured with a very high end, HD Audio/Video demo system in the 3700 square foot Port Ballroom. The show manager and driving force behind the event is Steve Davis, a longtime audiophile and equipment vendor. He and I have been friends for many years and when he got the AXPONA show off the ground he called and invited me to participate with both a state-of-the-art demonstration of HD Surround Music AND a couple of seminars on the latest in high definition music servers and multichannel HD music.

It was a welcome relief to learn that the AXPONA show would not only include but feature digital equipment and HD surround software. Traditionalists are comfortable with the usual array of turntables and vinyl discs, but they rarely get exposed to the future of recorded music…a full blown, high definition, audio and video system.

The show was held at the Wyndham Riverwalk Hotel and was easily as large as the Rocky Mountain Audio Festival held each fall in Denver. Vendors came from all over the country to show off their latest audio gadgets, software and hardware. Most of the usual audiophile components were on display to the roughly 2000 attendees that flowed through the hotel on Friday and Saturday. They heard vinyl played on $100,000 turntables, exotic tube amplification systems, expensive power conditioners, cryogenically treated speaker and interconnect cables and all sorts of high end speakers. And they heard what John Atkinson called the, "Best Experience at AXPONA?" in his show report. John went on to say, "The AIX recordings I auditioned ranged from solo guitar and piano to full big band, and all were enveloping in a manner I have never experienced on even the best two-channel system."  I couldn't agree more.

The demo system that we set up at AXPONA consisted of equipment supplied by some of the best manufacturers in the business. There were three 1012 Boulder Pre Amplifiers (we needed three to handle the 5.1 surround outputs of the BD player), various Boulder Amplifiers (3 monoblocks and 1 stereo) and 5 Thiel CS3.7 speakers with 2 SSP 2 subwoofers. All this was connected with custom interconnects and speaker cables made by DH Labs. The HD Video was projected using a DCX-1000 unit from Wolf Cinema onto a Greyhawk 109" screen made by Stewart Filmscreen.

However, it was the source component that drew the most attention. I played back my HD Audio/Video recordings using a $900 Oppo BDP-83 SE (the "SE" stands for Special Edition). I would venture to say that this unit was the least expensive playback unit at the entire show, yet produced the highest fidelity sound (yes, I did manage to get to just about every room at the show)! Visitors to the room couldn't believe the degree of involvement and intimacy produced by our tracks on the Oppo BD player. It begs the question why anyone would spend upwards of $100K on a turntable, which can't come close to approaching the dynamic range and frequency response of a HD Audio BD disc when recorded with care.

I would be remiss if I didn't also mention the incredible video projector that Jim McGall of Wolf Cinema brought to the show. I hadn't heard of this company before talking to a friend that used to work at Runco prior to their sale. He put me in touch with Wolf and they kindly agreed to make one of their units available for the duration of the show. In fact, Jim was there to set up and calibrate the machine AND take the controls of the audio playback when I needed a break.

The DCX-1000 projector produced the brightest, most detailed HD Video image that I've ever seen…and it did so from a distance of over 50 feet back from the screen! No I just have to figure out how to get one for my studio…without having to shell our $85,000. Unlike the Oppo BDP-83 SE player, this unit comes with a price tag that matches its performance.

The first AXPONA show was definitely a hit. Kudos to Steve and Andrew for taking the bold step of putting on an audio show east of the Mississippi…and for making it so inclusive. Everyone had a great time, learned a lot and shared what we all love most…great audio.

 

 

 
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