When the need for tuning the piano? The problem was still regularly performed? The new piano tuning should buy a home once, although the factory to do the testing, but does not rule out other conditions of transport or cause to run sound, and then on the piano after calibration children compare properly. Generally requires regular piano tuning, intonation or not related to the child's hearing habits will affect the sound. Piano Look frequency level to determine the number of piano tuning and maintenance of knowledge, industry Yu Xueqin adjusted twice a year in general, professional school violin and piano older cases tune once per quarter. Harpsichord - 哈普西科德 (Harpsichord) in the form of audio and playing these two features are related to the clavichord has exactly the same characteristics. Appearance is basically the same, and even today we only appearance that they are difficult to distinguish what kind of piano. Two harpsichord in appearance, tone, playing the piano is characterized by consistent maintenance, but the sound effects are played emitted is completely different. This is due to the excitation of different strings dictates the way. Harpsichord are plucked at the keyboard end of the device is equipped with its plucked the plectrum is a metal foil wrapped leather, also used as a plume birds paddles, it is also known for such piano feather tube harpsichord. Press the sound button and strum, fingers simultaneously with, playing out all sound, polyphony. This approach has the disadvantage strings sound inspired its insurmountable. First piano maintenance, plucked a way to make the volume, timbre changes Henan difficult piano maintenance, and can not be overcome to produce noise when struck chord struck. Also, because the paddles on the strings of time can not stay as hammers strike the strings when the sound in the strings stay as short (0.3 seconds), so the vibration of the strings is not sufficient, the sound is weak and short. Piano maintenance of common sense _ Zhengzhou love music (certified) _ Maintenance piano music provided by the Zhengzhou Love Trading Company. Zhengzhou love music Trading Company (www.azygq.com) is Zhengzhou, musical leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Zhengzhou leadership in the music of love with the staff warmly welcome all inquiries negotiations to create Zhengzhou love music more beautiful future.