AKAI S612
Manual de Usuario

TUNING

With the S61 2's "Tuning" function, it is possible to freely tune a sampled sound within a range of ±100 cents (a half step), and to save the tuning parameters along with the sampled data. In other words, the data for the TUNE control are programmable.

Tuning when Sampling
When sampling, the tuning is based on the center position of the TUNE control. 1. When the sampled sound is played and the TUNE control points to the center, as shown in the diagram, the sound will be reproduced with the same pitch. 2. When the sampled sound is played, and the TUNE control is turned fully right (left) as shown in the diagram, the pitch will be a half step higher (lower).

Tuning when Saving
Because the TUNE control is programabte, the data to be saved on disks (tapes) will correspond to how much to the right (or left) the control is turned. Example: If the note A is sampled and then retuned, using the TUNE control, by +100 cent and saved to disk, when the A key is pressed the note A# will be played. However, provided that the TUNE control is not reset, once the save is verified the tuning will again move by +100 cents. This means that now, when the A key is pressed, the note B will be played. It is possible to achieve the previously desired note of A# by resetting the TUNE control to the center position.

Tuning when Loading
When sound is loaded from disk (tape) the tuning will be either higher or lower than the tuning which had been saved, depending on the present position of the control. 1. When the loaded sound is played and the TUNE control is positioned in the center, the pitch will be the same as the tuning which has been saved. 2. When the loaded sound is played and the TUNE control is set at +50 cents from the center position, the sound is played +50 cents higher than the saved tuning. When the sound data is loaded from disk (tapes), the present position of the TUNE control will add to, or subtract from, the pitch of the saved data. For example, suppose that the sample was saved 50 cents higher than the originally sampled sound and that the loaded sound is played with the TUNE control set at +50 cents. In this case, the pitch will be (+50) cents + (+50) cents = + 100 cents, which is a half step higher than the original sound.

Tuning When Playing after Loading
As stated earlier, after the sound data is loaded, the pitch of the replayed sound will depend on the present setting of the TUNE control (regardless of where the TUNE control was set during loading). For example, suppose that a sample is retuned to +50 cents and then saved to disk (tape). When that sample is loaded from disk (tape), if the TUNE control is still set at +50 cents, then the replayed sound will now be at (+50) cents + (+50) cents = + 100 cents; a half step higher than the original sample. However, if the TUNE control is reset to the center position, the replayed sound will now be at only +50 cents higher than the original sample: the pitch at which the sample was saved. It followes. therefore, that if the TUNE control were to be set at -50 cents, the replayed sound will be (+50) cents + (-50) cents = 0 cent; zero change; which means that the sound will now be the same pitch as the original sample.