Electronic tuner
A tuning device is an electronic device for tuning a musical instrument.
It recognizes a built-in microphone or a pickup connected by jack (eg an electric guitar or electric bass ) the sound that is played on the instrument, and shows by lamps or on a scale of whether this sound compared to most adjustable pitch too low, too high or ( within the measurement accuracy) is correct.
Some tuners only recognize certain sounds, for example, the open strings of a guitar, while chromatic tuners recognize all 12 semitones over several octaves. Simple devices of this type can attune only the equal temperament. Sophisticated equipment can depending on the model between different moods (eg, Pythagorean, mean tone, equally- ) are switched or show deviations directly in cents (micro tuner).
There are many different variations. Some have a built in speaker (eg, the open strings of the guitar ) can be output via the specific tones. For these there is sometimes the function, in which the tuning of all strings can be moved in semitones down ( for so-called flat - tuning ). Also, the external appearance is variable: A common variant are small devices as shown, but also pedals similar to the guitar effects units, also referred to as " land mines" are popular because they can be switched between guitar amp and ( e ) guitar and a kick is enough to in between to vote, with the sound transmission is interrupted to the amplifier.
Operation
A microprocessor ( frequency counter ) counts the number of oscillations per second and converts them into pitches. Manufacturer of strobe tuners promise customers a higher accuracy than conventional units with a frequency counter.
Related Topics
Other aids for tuning musical instruments are the tuning fork and the pitch pipe.
Spreading the mood of piano strings
When tuning the piano, the entire mood, conditionally, stretched by the inharmonicity of the strings, ie, the higher strings are higher, voted the deeper deeper. There are again vocal programs (for PC or Pocket PC), which measure these inharmonicity, and then calculate an appropriate mood; see stretching ( music).