

Time-coherent sound
Once you hear it, you will wonder how you lived without it. Here is why you
need it.
The sounds of real life are naturally organized in time
All sounds are collections of many small ones -- and each of those has its own
tone, loudness, and timing. When each of those small sounds arrives at the ear
is just as important as its tone and loudness.
Collectively, their timing is how we instantly know what a particular sound
belongs to -- for example, hearing a cry, knowing it is a baby's cry, and then
identifying that it is your baby. The arrival times of those many small sounds
also contain the message -- it is how you understand your baby is also hungry.
You unconsciously used the timing of those sounds to identify, decode, and then
understand their meaning. This process happened instinctively, with the mind
automatically filling in any missing information and discarding information
it deemed unnecessary. You know that cry belongs to your baby, whether in a
crowded market or on a busy street corner.
Time-coherent sound from speakers means hearing the way it is supposed to
be heard
For an imaginary moment, let us record your baby's cry. Upon listening to the
playback through most speakers available today, you probably would recognize
your baby's cry, but you might not identify that your baby is hungry. Through
our time-coherent speakers, you would know your baby was hungry and also that
he needed a new diaper. Our speakers introduce as little change in the timing
of those many small sounds of life, from bass to treble, as physics permits.
That is the way it should be -- and why our owners report life-changing experiences,
wonderment, and awe. They tell of hearing new voices and instruments they never
knew were present...having spontaneous tears...feeling terrified...hearing an
artist smile and the band members' chatter. Their minds no longer work to fill
in the energy of the performance or soundtrack. For them, listening has become
an out-of-the-body, almost orgasmic experience.
Achieving this level of reality included solving some of the world's most difficult
mathematics involving the propagation of sound, selecting the world's best drivers,
feeding those drivers from one unique crossover circuit, and engineering the
quietest possible cabinets. We have addressed every design variable so that
our speakers deliver to your ear sounds in the same sequence in which they were
recorded.
Our attention to all aspects of design means you will hear not just every nuance,
but also their meanings. For example, about one second of Ray Charles (left)
singing the letter "a" in the word, "say" from the song, "What'd I Say" is shown
below. Buried in this complicated waveform are the rasp of his voice, hiss from
his breath, and subtle changes in his loudness and vibrato.
Although the larger waveform represents the letter 'a,' the small wiggles within
that waveform are unique to him. No one else on the planet has those same small
wiggles. Change the timing of those smaller sounds -- those small wiggles --
and the waveform could be of your cousin Vinnie singing karaoke in a neighborhood
bar.
Does timing matter? You bet.
And our speakers deliver it better than any others on Earth.
©
Green Mountain Audio Inc.