Yamaha RX V659 MCXSP10 Manual - Page 74

SOUND FIELD PROGRAMS SOUND FIELD PROGRAMS What really creates the rich, full tones of a live instrument are the multiple reflections from the walls of the room. In addition to making the sound live, these reflections enable us to tell where the player is situated as well as the size and shape of the room in which we are sitting. ■ Elements of a sound field There are two distinct types of sound reflections that combine to make up the sound field in addition to the direct sound coming straight to our ears from the player's instrument. Early reflections Reflected sounds reach our ears extremely rapidly (50 ms to 100 ms after the direct sound), after reflecting from one surface only (for example, from a wall or the ceiling). Early reflections actually add clarity to the direct sound. Reverberations These are caused by reflections from more than one surface (for example, from the walls, and the ceiling) so numerous that they merge together to form a continuous sonic afterglow. They are non-directional and lessen the clarity of the direct sound. Direct sound, early reflections and subsequent reverberations taken together help us to determine the subjective size and shape of the room, and it is this information that the digital sound field processor reproduces in order to create sound fields. If you could create the appropriate early reflections and subsequent reverberations in your listening room, you would be able to create your own listening environment. The acoustics in your room could be changed to those of a concert hall, a dance floor, or a room with virtually any size at all. This ability to create sound fields at will is exactly what YAMAHA has done with the digital sound field processor. Selecting sound field programs Notes • Choose a sound field program based on your listening preference, not merely on the name of the program. • When you select an input source, this unit automatically selects the last sound field program used with the corresponding input source. • Sound field programs cannot be selected when the component connected to the MULTI CH INPUT jacks is selected as the input source (see page 44). • Sampling frequencies higher than 48 kHz (except for DTS 96/24 signals) are sampled down to 48 kHz and then sound field programs are applied. ■ Front panel operations ■ Remote control operations (U.S.A. model) ZONE 2 ON/OFF ZONE CONTROL VOLUME MASTER ON OFF MAIN ZONE ON/OFF PHONES OPTIMIZER MIC SPEAKERS A B PRESET/TUNING FM/AM EDIT SEARCH MODE A/B/C/D/E NEXT CATEGORY PROGRAM l PRESET/TUNING/CH h MEMORY TUNING MODE MAN'L/AUTO FM AUTO/MAN'L LEVEL INPUT DISPLAY STRAIGHT TONE CONTROL INPUT MODE MULTI CH INPUT PURE DIRECT SILENT CINEMA EFFECT S VIDEO VIDEO AUX VIDEO L AUDIO R OPTICAL PROGRAM selector Rotate the PROGRAM selector on the front panel. The name of the selected sound field program appears in the front panel display and in the OSD. TV VOL TV CH AMP VOLUME SOURCE TV TV MUTE TV INPUT MUTE STEREO 1 MUSIC ENTERTAIN MOVIE 2 3 4 STANDARD SELECT EXTD SUR. PURE DIRECT 5 6 7 8 SPEAKERS 9 ENHANCER 0 NIGHT 10 STRAIGHT ENT. PRESET/CH EFFECT (U.S.A. model) AMP Sound field program selector buttons Set the component selector switch to AMP and then press one of the sound field program selector buttons on the remote control repeatedly. The name of the selected sound field program appears in the front panel display and in the OSD. 70