the sound , the voicing is the finishing touch of a piano or grand
piano. After the tuning and fine-tuning of a piano, the heads
of the hammers are being treated with a voicing needle.
In the factory
the wooden mouldings of the heads are wrapped tightly around with
a thick layer of pressed felt. The tension and the choice of material
determine the hardness and elasticity of the head.
By using voicing
needles on certain places in the felt, the hardness and elasticity
can be changed.
method not only makes it possible to even out internal differences
in tone, one can also alter the complete sound of the instrument.
When the felt
on the head of the hammer is cut through, you can see clearly
how big the tension is on the felt.