3Com CP-1 owner manual Ambience, Room Shape Liveness

The Programs:

Ambience

Lexicon

Ambience

Ambience generates the appropriate early reflections for stereo simulation of one of six different halls — one rectangular hall and one fan-shaped hall in small, medium and large sizes — and sends the reflections to the side and rear speakers. For systems with only two loudspeakers, Ambience also incorporates a version of Panorama that will spread the stereo image and add the reflections it generates to the expanded sound stage.

The initial EFFECT LEVEL is highest for Program 4 and progressively lower for Programs 5 and 6. It will be easier to hear exactly what the parameters do if the effect level is temporarily turned all the way up.

Program
Parameters
Parameter	Initial Value	Range
ROOM SHAPE	Rectangle	Rectangle, Fan
LIVENESS	4	0-6
ROLLOFF	s/m/l=5.9/3.6/2.9 kHz	329 Hz-14.1 kHz
PANORAMA EFF	28*	0-32
LISTENER POS	128	0-254
SPEAKER ANGLE	51 degrees	33-91 degrees
SPEECH DETECTION	ON	On/Off
SET PROGRAM NAME	NA	NA
MEMORIZE PROGRAM	NA	NA

	* 0 if side speakers are specified
Effect Level	EFFECT LEVEL adjusts the loudness of the side and rear speakers. When
	there are no side speakers, it adjusts the amount of ambient signal mixed
	into the main loudspeakers. EFFECT LEVEL is the most important user
	adjustment in AMBIENCE and REVERB, and has been given its own button
	on the remote. It should be adjusted as high as possible without making the
	extra speakers individually audible.

Room Shape

Liveness

ROOM SHAPE selects one of two basic hall shapes. Refer to Chapter 5: Theory and Design, for a discussion of the properties of the two.

The LIVENESS parameter adjusts the amount of recirculation within the program. The higher the value, the more reflective the surfaces of the simulated space and the longer the sound will take to decay. At very high values the decay is audibly less smooth than in the Reverb programs, which are more effective at simulating very live spaces.

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