Author Kevin Bazzana refers to our process as a “live realization of the original interpretation.” Zenph 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.

Remastering is a process of taking older recordings (often on older media such as reel‐to‐reel tapes), cleaning them up to the expectations of modern listeners, and preparing them for delivery on new media (such as CD or digital mp3) or sound reproduction (such as stereo or surround) formats. Remastering often involves operations such as noise reduction (removing artifacts captured in the original medium), dynamics processing (to make a recording sound as loud as possible without excessive distortion), and spatialization (to take advantage of the immersion potential of many loudspeakers, for instance in a home theater setting). The key problem with remastering is that it is limited to these types of modifications. At every stage of the remastering process one is still dealing with the raw original audio waveforms. There exists no data regarding musical events or performance gestures to accompany these waveforms. As a result, one cannot change the style of the performance, the notes, the instruments, the venue, the soundstage, or any of the other aspects that become instantly malleable with Zenph’s core technology. Similarly, remastering does not allow one to re‐record or re‐mix the entire performance, as is often necessary in cases where masters are lost, and all that exists are scratchy, hundred‐year‐old wax‐cylinder recordings or distorted and damaged recordings from video.

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