Sound Field Parameter Descriptions - Yamaha DSP-Z11 Owner's Manual

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■ Sound field parameter descriptions

You can adjust the values of certain digital sound field parameters so that the sound fields are recreated accurately in your listening room. Not
all of the following parameters are found in every program.
Sound field
parameter
Decoder Type Decoder type. Selects the decoder used with the SUR. DECODE, THX, or MOVIE programs. See page 72 for details.
Init. Delay Initial delay. Presence, surround, and surround back sound field initial delay. Changes the apparent size of the sound field by adjusting the
delay between the direct sound and the first reflection heard by the listener. The smaller the value, the smaller the sound field seems to the
Sur. Init.Delay
listener.
SB. Init. Delay
y
When you adjust the initial delay parameters, we also recommend that you adjust the corresponding room size parameters likewise. This adjustment
is especially effective for the CINEMA DSP programs.
Control range: 1 to 99 ms (Init. Delay)
Room Size
Room size. Presence, surround, and surround back room size. Adjusts the apparent size of the sound field. The larger the value, the larger
the surround sound field becomes. As the sound is repeatedly reflected around a room, the larger the hall is, the longer the time between
Sur. Room Size
the original reflected sound and the subsequent reflections. By controlling the time between the reflected sounds, you can change the
SB. Room Size
apparent size of the virtual venue. Changing this parameter from one to two doubles the apparent length of the room.
y
When you adjust the room size parameters, we also recommend that you adjust the corresponding initial delay parameters likewise. This adjustment
is especially effective for the CINEMA DSP programs.
Control range: 0.1 to 2.0
78
En
1 to 49 ms (Sur. Init. Delay and SB Init. Delay)
Time
Delay
Sound source
Reflection face
Small value = 1 ms
Time
Sound source
Small value = 0.1
Features
Source sound
Early
reflections
Time
Delay Delay
Large value = 99 ms
Source sound
Early
reflections
Time
Time
Time
Large value = 2.0