Yamaha DSP-A1092 Owner's Manual - Page 46

DESCRIPTIONS OF THE SOUND FIELD PROGRAMS The following list gives brief descriptions of the sound fields produced by each of the DSP programs. Keep in mind that most of these are precise digital recreations of actual acoustic environments. The data for them was recorded at the locations described using sophisticated sound field measurement equipment. * The channel level balance between the left rear speaker and the right rear speaker may vary depending on the sound field you are listening to. This is due to the fact that most of these sound field recreations are actual acoustic environments. 1. DOLBY PRO LOGIC When the input signal is analog or PCM audio ( Speaker output: main, center, rear ) PRO LOGIC DOLBY DIGITAL When the input signal is Dolby Digital ( ) DIGITAL Speaker output: main, center, rear Reproduces video discs, video tapes and similar sources which are Dolby Surround encoded and bear the "DOLBY SURROUND" logo. The built-in Dolby Pro Logic Surround decoder or Dolby Digital (AC-3) decoder precisely reproduces sounds and sound effects of a source encoded with Dolby Surround. The realization of a highly efficient decoding process improves crosstalk and channel separation and makes sound positioning smoother and more precise. 2. DOLBY PRO LOGIC ENHANCED When the input signal is analog or PCM audio ( DSP ) PRO LOGIC Speaker output: main, center, rear, front effect DOLBY DIGITAL ENHANCED When the input signal is Dolby Digital ( ) DIGITAL DSP Speaker output: main, center, rear, front effect Reproduces video discs, video tapes and similar sources which are Dolby Surround encoded and bear the "DOLBY SURROUND" logo. This program ideally simulates the multisurround speaker systems of the 35 mm film theater. The Dolby Surround decoding and the digital sound field processing is precisely performed without altering the originally designed sound orientation. The surround effects produced by this sound field folds the viewer naturally from the rear to the left and right and toward the screen. NOTE: If the main channel sound is considerably altered by overadjustment of the BASS or TREBLE controls, the relationship with the rear channels may produce an unnatural effect. 44