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MartinLogan Descent i [17/28] Your room

Your Room

This is an area that requires both a little background to

understand and some time and experimentation to attain

the best performance from your system.

Your room is actually a component and an important part

of your system. This component is a large variable and can

dramatically add to or subtract from a great sonic experience.

All sound is composed of waves. Each frequency has its

own wave size, with the lower, or bass frequencies liter-

ally encompassing from 10 feet to as much as 40 feet. Your

room participates in this wave experience like a swimming

pool with waves reflecting and becoming enhanced depend-

ing on the size and shape of the room and the types of

surfaces in the room.

Remember that your audio system can actually generate

all of the information required to recreate a sonic event

in time, space, and tonal balance. Acoustically, the role of

an ideal room would be to neither delete nor contribute

to that information. However, nearly every room does to

some degree.

Terminology

Standing Waves

Sound coming from a subwoofer bounces around in a

room until a pattern emerges—this is called a standing

wave. Typically, this is only a problem with frequencies

below 100Hz. When this happens different parts of your

room experience either an excess or a lack of bass.

Some people believe that having a room without parallel

walls will eliminate this effect. The truth is that non-parallel

walls only generate different standing wave patterns than

those that occur in rectangular rooms.

Usually, you can excite most of the standing waves in a

room by putting the subwoofer in a corner. Listening

position determines which standing waves you will expe-

rience. For instance, if you sit in a corner you will hear

most of the standing waves. This can be an overpowering

experience. Sitting next to a wall can also intensify the levels

of the standing waves that are experienced.

Resonant Surfaces and Objects

All of the surfaces and objects in your room are subject to

the frequencies generated by your system. Much like an

instrument, they will vibrate and "carry on" in syncopation

with the music, and may contribute in a negative way to the

sound. Ringing, boominess, and even brightness can occur

simply because surfaces and objects are "singing along" with

your speakers.

Resonant Cavities

Small alcoves or closet type areas in your room can be

chambers that create their own "standing waves" and can

drum their own "one note" sounds.

Room Acoustics 17

ROOM ACOUSTICS

MartinLogan Descent i [17/28] Your room

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