发明名称 |
TUNING APPARATUS FOR STRINGED INSTRUMENTS |
摘要 |
"TUNING APPARATUS FOR STRINGED INSTRUMENTS" A guitar tuner includes a manually graspable body with a head projecting outwardly from one end driven by a motor inside the body to rotate about an axis. The head includes a slot shaped opening for grasping the key of a conventional instrument such as a guitar. An input sensor in the body detects a tone from the string of the instrument and converts it to square wave of the detected frequency. This is compared by a microprocessor with the closest adjacent intended frequency of the instrument selected which acts to drive the motor to tighten or loosen the string as required to attain the required frequency. A digitial display provides a readout of the number and letter of the string concerned. The user can select any one of a number of different states of the device for use with different instruments or different tunings. The user can also override the automatic string selection in cases where the string is a long way from its required frequency. |
申请公布号 |
CA1277856(C) |
申请公布日期 |
1990.12.18 |
申请号 |
CA19880559413 |
申请日期 |
1988.02.19 |
申请人 |
ST. DENIS, CARROLL R. |
发明人 |
ST. DENIS, CARROLL R.;HARDER, REGINALD B. |
分类号 |
G10D3/14;G10D7/02 |
主分类号 |
G10D3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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