Laser vibrometers from Optomet support manufacturers of musical instruments in the optimization of musical instruments with regard to sound quality, durability and design characteristics.
The examination of instrument strings is practically impossible with conventional contact sensors, as these are difficult to attach to the strings. Additionally, mass loading by sensors such as accelerometers would corrupt the dynamic response of the measurement object. A similar problem arises with the sound boxes of guitars and string instruments as well as the sound boards of pianos and grand pianos.
Optomet laser Doppler vibrometers allow to systematically investigate vibration amplitudes, resonance frequencies, damping and the effects of the choice of materials in the development of musical instruments, without the need of physically contacting and therefore influencing the characteristics of the instrument.
The vibration analysis of resonance bodies allows the detection and visualization of surface vibrations on the body of an instrument. Vibration modes or hidden sounds can be clearly identified and classified in the frequency spectrum. This enables a clear analysis of the unique sound of guitars, violins, pianos, drums and many other instruments.
An additional quality assessment and sound characterization is the time representation of the vibration propagation. This method clearly determines the time course of the wave propagation over the resonance body.