ACOUHYB – A New Acoustic Dimension for the Piano.
What if the next evolution of the acoustic piano is not digital, but acoustic?
For more than 150 years, piano makers have refined the instrument, while its fundamental acoustic principle has remained essentially unchanged.
This inspired a simple question:
Can the timbre of an acoustic piano be expanded without changing its traditional touch, action or playing technique?
The ACOUHYB project was born from the search for an answer.
During my research, I discovered the fascinating experiments of Conrad Graf, who sought to increase the piano’s sound power by adding a fourth string struck by the hammer.
ACOUHYB follows a completely different concept.
In the ACOUHYB system, the fourth string is not struck during normal playing. It vibrates by sympathetic resonance. When the left pedal is engaged, the pianist can activate the fourth string, adding a new expressive dimension while preserving the traditional playing experience.
The innovation is not about making the piano louder.
It is about expanding its timbral possibilities.
By carefully adjusting the tuning of the fourth resonating string relative to the three conventional strings—for example ±1 Hz, ±4 Hz or ±8 Hz—different resonance relationships produce different overtone structures and a wide palette of tonal colours.
The piano remains the same.
Its sound can become something entirely new.
Rather than replacing the traditional acoustic piano, ACOUHYB expands its expressive possibilities through controlled sympathetic resonance.
The project has already reached important milestones, including prototype construction, public demonstrations and international patent protection.
I believe the future of the acoustic piano may still hold unexplored possibilities—not by replacing tradition, but by building upon it.
I would be delighted to connect with piano manufacturers, performers, universities, researchers and institutions interested in the future of acoustic piano sound.
The sound can be described.
But it is best experienced.
#ACOUHYB #Piano #PianoInnovation #Acoustics #MusicTechnology #Engineering #Research #ClassicalMusic
For more than 150 years, piano makers have refined the instrument, while its fundamental acoustic principle has remained essentially unchanged.
This inspired a simple question:
Can the timbre of an acoustic piano be expanded without changing its traditional touch, action or playing technique?
The ACOUHYB project was born from the search for an answer.
During my research, I discovered the fascinating experiments of Conrad Graf, who sought to increase the piano’s sound power by adding a fourth string struck by the hammer.
ACOUHYB follows a completely different concept.
In the ACOUHYB system, the fourth string is not struck during normal playing. It vibrates by sympathetic resonance. When the left pedal is engaged, the pianist can activate the fourth string, adding a new expressive dimension while preserving the traditional playing experience.
The innovation is not about making the piano louder.
It is about expanding its timbral possibilities.
By carefully adjusting the tuning of the fourth resonating string relative to the three conventional strings—for example ±1 Hz, ±4 Hz or ±8 Hz—different resonance relationships produce different overtone structures and a wide palette of tonal colours.
The piano remains the same.
Its sound can become something entirely new.
Rather than replacing the traditional acoustic piano, ACOUHYB expands its expressive possibilities through controlled sympathetic resonance.
The project has already reached important milestones, including prototype construction, public demonstrations and international patent protection.
I believe the future of the acoustic piano may still hold unexplored possibilities—not by replacing tradition, but by building upon it.
I would be delighted to connect with piano manufacturers, performers, universities, researchers and institutions interested in the future of acoustic piano sound.
The sound can be described.
But it is best experienced.
#ACOUHYB #Piano #PianoInnovation #Acoustics #MusicTechnology #Engineering #Research #ClassicalMusic
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