The audible improvement of the TDS Harmonic Enhancement Technology is not subtle, rather its impact is immediate and quite apparent to both the audiophile and consumer user alike. TDS yields a width, depth and spaciousness to any audio signal, enabling it to sound as it was originally intended to be heard. Studies on the average thresholds of human hearing have concluded that the human ear is less sensitive to certain audio frequencies than others. This lack of sensitivity is compounded by the energy loss that an audio signal experiences during the playback process. The Company’s patented TDS Harmonic Enhancement Technology addresses this phenomenon by non-uniformly amplifying those select frequencies, which are present in the original audio signal, but (without TDS) are not otherwise as perceptible to the human ear. Therefore, TDS enhances the listener’s ability to more accurately hear/perceive the entire frequency range of any recorded or broadcast signal. Thus enabling the listener to perceive increased sound stage, separation, low level and/or ambient information, as well as greatly enhanced acoustic detail that would be much less apparent without TDS.

The genesis of this pioneering breakthrough in the enhancement of acoustics originated when Arturo Garcia (a Company founder and co-inventor), set out to prove his theories on harmonic restoration/audio enhancement. With the creative assistance of Mr. Garcia’s son Art, the inventive genius of the Garcia’s, coupled with their dedication and convictions regarding the harmonic restoration of sound, culminated in the development of what is now known as the TDS Harmonic Enhancement technology. TDS was awarded its first patent in November of 1994 and since that time, Company management has advanced TDS's technical ability to restore the harmonic spectrum of sound so completely that all audio signals can now be perceived with unparalleled presence, detail and clarity.

During the past several years, prototypes and various iterations of TDS were tested in over 450 sound systems; both in professional sound studios (multi-million dollar audio equipment) and in numerous personal environments, with presentations given to more than 1,000 individuals and companies.

TDS prototypes have been tested at several professional sound studios including George Lucas’s "Skywalker Sound", Dolby, Universal Studios, and Sony. A representative example of the Company’s experiences includes an audition at Sony Pictures Studios in Culver City, California, in the Cary Grant Theater (at the time, the number one sound stage in the world). While testing TDS at the Cary Grant Theater, TDS was connected to a 25-foot long, $1.2 million sound mixing board located within a $6 million sound stage. For 4╜ hours, five sound engineers and acoustic mixers tried to match the performance of TDS. To their surprise, sometimes chagrin, but always amazement, it was impossible to duplicate the "TDS performance". Their reaction was probably best captured by Tom Dowd, a respected and noted sound engineer and recipient of the 1996 NARAS Lifetime Achievement Award with credits on 600+ Gold & Platinum records & CD’s. Mr. Dowd stated that "TDS adds back what I would originally hear in the studio, but could never capture on the finished product".

Since the Company’s 1994 experience at Sony Pictures, TDS has been tested and utilized in several professional movie studios, and was recently permanently incorporated into the newest Universal Studios mixing facility for acoustic mastering of motion pictures. TDS has been used to enhance the sound tracks of such feature films as "Jerry Maguire", "My Best Friends Wedding" and, most recently "The Mummy"; and continues to be used for numerous other motion pictures. Additionally, in the entertainment sector, TDS continues to be used for mastering soundtracks by recording artists for original CD recordings, re-mastering of previously recorded material, to enhance FM and AM radio broadcasts, fiber optic cable TV and in a myriad of other commercial applications.

Unlike most patented technologies, which are variations or unique extensions of already existing technologies, TDS is a pioneer technology that has never been conceived of, in any form or format, as confirmed by extensive worldwide patent searching. It should be noted that the TDS harmonic enhancement technology presently offers multiple design solutions for any application, including, but not limited to: (1) TDS passive inductive circuits; (2) analog and digital IC's; and (3) pure software solutions that can readily yield innumerable proprietary digital filters (which is the type of TDS Solution you have on the HyCD player). Further, the TDS technology does not employ any phase changes or time delays, and simply, yet ingeniously enhances the harmonics that already exist within the original signal without affecting the integrity or mix of that signal. Hearing, in this case, is truly believing!