Tibetan Singing Bowl in F

F-sharp is a note a semitone above F. It should be considered a note in its own right, not a variant of F. Its fundamental frequency is 185 hertz in the low register and approximately 370 hertz in the middle register, while F has fundamental frequencies of 174.61 and 349.23 hertz, respectively. This represents a difference of about 10 hertz in the first register and 20 hertz in the second, or a semitone in each case. This note is written as F# in standard notation and can also be called G-flat.

The two notes are sometimes grouped in the same category. Most of our bowls, however, allow you to choose from the seven natural notes, without sharps or flats, in keeping with the tradition that associates F with the heart chakra, Anahata.

Yes, the letter F denotes the note F in standard pitch notation, as it does in German notation. The number following it indicates the octave, so F3 and F4 are both F notes at very different frequencies. Keep in mind that this number varies by notation system: the F at 349 hertz is called F4 in standard pitch notation and F3 in France. That’s why it’s best to rely on the displayed frequency.

A symbol and number may be added to the letter, such as F+40 or F-30, to indicate how many cents the bowl deviates from the centre of the note. Since there are 100 cents between one note and the next, such a bowl remains closer to F than to E or F-sharp.

To take the measurement, choose a quiet room and wait one to two seconds after striking the bowl. The loudest sound from a metal bowl may be an overtone rather than its fundamental—that is, its lowest note and the one used to name it. In that case, your tuner may display F for an instrument whose fundamental is actually a different note, so you’ll need to repeat the process several times. Note the value that appears consistently and compare it with the frequency of F. If it falls between E and F, compare it with a tuned instrument. Also, be sure to set your tuner to your bowl’s reference pitch, because an F tuned to A=432 but measured with the tuner set to A=440 will appear about 30 cents flat even though it is centred on its note.

However, this reading remains approximate. A phone can pick up the sound but does not offer the precision of a dedicated measuring device. A metal bowl sold as an F may differ by a few hertz and still be an F.

Yes, both can produce an F. Size affects the octave and sustain without necessarily changing the note. You’ll find F bowls in a wide range of sizes in our selection.

As a general guide, hammered metal bowls tuned to a low F measure approximately 19 to 23 cm and weigh between 1 and 1.6 kg. These are only guidelines. With crystal bowls, the same F may be available in an approximately 20 cm bowl in the middle register and a 33 to 36 cm bowl one octave lower. The finish must also be considered, since a clear crystal bowl generally sounds one octave lower than a frosted crystal bowl of the same diameter.

However, diameter alone is not enough to determine the note or octave. Thickness, shape, and craftsmanship must also be considered; for example, a thick bowl tends to produce a higher pitch. We therefore recommend selecting your instrument based on its note, since weight and size can vary from one bowl to another.

A frequency of 174 hertz corresponds to low F within less than one hertz, as the centre frequency of this note is 174.61 hertz when the reference pitch is set to 440 hertz. If you’re deciding between a bowl tuned to 174 hertz and a low F bowl tuned to A=440, your ear will perceive them as the same pitch. Crystal bowls tuned to F may be listed at 173, 174, 175, or 177 hertz. A metal bowl measuring approximately 19 cm has also been measured at 174.56 hertz.

However, this comparison does not apply with a reference pitch of 432 hertz, as low F then drops to approximately 171 or 172 hertz.

The sound of a Tibetan singing bowl tuned to F is commonly described as mid-range, warm, and full. Within the same octave, F and the note G are considered middle notes, between the low notes of C, D, and E and the high notes of A and B. Such a bowl also produces a deep, steady hum that you can feel in your chest.

The material further shapes this character. On a metal singing bowl tuned to a low F, the first harmonic accompanying the note may be a C. A large F bowl made of quartz crystal, on the other hand, has a very long sustain. You can select your Tibetan singing bowl in F in either material from the Instruments du Monde store.