Yamaha P-515 Owner's Manual page 17

Reproducing the Natural Sensation of Sound Distance
—Binaural Sampling and Stereophonic Optimizer
This instrument features two advanced technologies that allow you to enjoy
exceptionally realistic, natural sound, even when listening on headphones.
Binaural Sampling ("CFX Grand" Voice only)
Binaural sampling is a method that uses two special microphones set at the ear
position of a performer and records the sound from a piano as it is. Listening to the
sound with this effect through headphones gives the impression of being immersed
in the sound, as if it was actually emanating from the piano. Moreover, you can
enjoy the sound naturally for a long time without ear strain. When the default voice,
"CFX Grand" is selected, connecting the headphones automatically enables the
binaural sampling sound.
Stereophonic Optimizer (Voices in the Piano group other than
"CFX Grand")
The Stereophonic Optimizer is an effect which reproduces natural sound distance
like the sound of binaural sampling even though you hear it on headphones. When
a Voice in the Piano group other than "CFX Grand" is selected, connecting the
headphones automatically enables the Stereophonic Optimizer.
When headphones are connected, the Voices in the Piano group automatically
change to the sound of Binaural Sampling or the sound enhanced with the
Stereophonic Optimizer, by the default settings. However, when headphones are
connected, these functions affect the sound from the external speaker connected to
the AUX OUT jacks or the sound for Audio recording (page 61), and may result in
those sounds sounding unusual.
If you want to turn these functions off, you can switch them on and off via the
"System" menu display. Press the [FUNCTION] button repeatedly to call up the
"System" menu display: "Sound" → "Binaural" (page 99).
Getting Started — Playing the Keyboard
Sampling
A technology which records
the sounds of an acoustic
instrument then stores them to
the tone generator to be played
based on information received
from the keyboard.
NOTE
Voices in the Piano group are
those contained in the "Piano"
category in the Preset Voice
List (page 107). For details
about selecting Voices, refer to
page 22.
NOTE
Before connecting an external
powered speaker system, be
sure to read "Connections"
(page 72).
P-515 Owner's Manual
17