Master Tuning, Sounding the A4 note

HP-1 – Owner’s Manual

4.3 Master Tuning

When playing in ensemble with other instruments, you can adjust the HP-1’s reference pitch to that of another instru- ment.

Middle A (“A4”) is generally used for adjusting the tuning of the instruments. When playing in ensemble with other instruments, tune each instrument to the same reference pitch. “440Hz” is the power-on default for the reference pitch. The following operations only work after selecting the HP-1’s Function mode (see p. 12 for how to select it).

ENGLISH

Sounding the A4 note

While tuning, it is of utmost importance to compare the HP-1’s tuning with that of the external instrument or device. Since the keyboard is used for setting the Function parameters, it is no longer available for play- ing that note the normal way.

That is why there are six keys that allows you to sound the A4 note. These are the ﬁrst six keys in the tuning range indicated on p. 12:

Press these keys to sound the

A4 note.

Lowering/ raising the reference pitch

The following keys (“G1” and “G#1”) can be used for lowering or raising the HP-1’s pitch in very small steps:

Higher

Returning to 440Hz

Press the “A1” key on the keyboard.

Return to 440Hz

The reference pitch will be set to 440.0 Hz. This is the most commonly used setting.

Setting the reference pitch to 442Hz straight away

“442Hz” is a popular tuning pitch for concert grands. Rather than trying to set it using the “G1” and “G#1” keys, you can press the “A#1” key to select that tuning right away:

Select 442Hz

The standard pitch will be set to 442Hz, and all other notes will change accordingly.

Lower

Press the “G1” note to lower the reference pitch, or the “G#1” note to raise it.

Each time you press the “G1” key, the pitch will fall by

0.1Hz. If you continue holding the key, the pitch will continue falling.

Each time you press the “G#1” key, the pitch will rise by 0.1 Hz. If you continue holding the key, the pitch will continue rising.