The musical interval between two notes depends on the ratio of their frequencies. An octave is a ratio of 2:1 and, in equal temperament comprises 12 equal semitones, which therefore have a ratio of 21/12.
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..its pitch.
432 Hertz was the frequency of the note A, used as the standard of tuning for musical instruments prior to the shift to 440 Hertz. Many people see a significant link between 432 Hertz and the human mind, suggesting that the frequency subconsciously relaxes our brain. That is why many people are pushing for 432 Hertz as the concert tuning pitch.
No, because a trombone is around the same frequency of a trumpet.The tuba is (out of my musical Knowledge) the instrument with the lowest frequency
The 'Calib' button on your chromatic tuner is used to calibrate the tuner. Standard tuning has 440 hertz frequency difference between half-steps on the musical scale. Some tuners will allow you to re-tune this to 441 or a few hertz off. The calibrate button selects the frequency. Make sure you get it set to the right frequency (stick with 440 hertz), or you'll create audible harmonic interference when playing with others.
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