How to get the best sound in the Listening room

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Room has a far-reaching impact on the sound reproduction of music. In fact, the voice role of the listening Room is considered another component of the broadcast chain. Because each listening room is responsible for its own voice, and only when the sound environment is good, your system can produce the best sound. An excellent listening room helps you to get the best sound from your medium system, but the bad room can make the sound of a good sound system worse.
Fortunately, you can use several simple techniques and instruments to greatly improve the listening room. Possible range, from just moving your speaker or listening position – a few inches, from the starting line to a good listening room, there are many options between the poles, including the addition of inexpensive, compelling sound processing products.
In many listening rooms, the most fundamental problem is that the bad speaker is placed. Finding the right position for your speaker is the most important factor in getting a good sound in the listening room. The speaker pendulum affects the coordination of high school bass, the amount and quality of the bass, the width and depth of the sound stage, the sharpness of the midrange, pronunciation and audio. When you change the position of the speaker substantially, and then gradually gradually fine-tune the pendulum, you will hear the newly found correctness music, seamless overtones into the sound. When this happens, your stereo will become lively and, best of all, it only takes you a few hours to get there.
Before special recommendation, let us sum up six kinds of speakers because of the position, and affect the sound of the basic reasons. The relationship between the speaker and the listener is most important for the
①. Between the listener and the speaker, it should be a triangle. Without this basic configuration, you can't hear good sound on stage with audio.
②. Speaker close to the wall affects the amount of bass. The closer the speaker is to the wall or corner, the more low the volume.
③. Speaker and listener in the room position, affecting the room resonant style of the audible degree. The resonant style of the room is enhanced by several frequencies, creating the peak of the frequency response. The
adds a rumble to the sound, and when the room resonates smaller, the bass interpretation is more complete and the midrange sharpness increases. (room resonance style is discussed later.)
④. The more the speaker moves toward the room, the better the sound stage-especially the depth.
⑤. Listen to the height effect.
⑥. Angle adjustment (speaker face to the listener), the impact of high school bass coordination (especially the amount of treble), sound stage width, audio-visual focus.
Let's look at the details of these factors:
1. The relationship between the speaker and the listener
The most important factor in getting a good sound is the geometric relationship between the speaker and the listener (we don't bother with the room problem), and the listener should sit in the middle of the two speakers, The distance from the speaker should be slightly larger than the spacing between the two speakers. Although this non-rigid fast rule, you should really sit in the middle of the speaker, if you do not have this basic relationship, it is impossible to get a good sound stage from the system.

Figure 1 Listener should be seated in the middle of the speaker, with each speaker and other distance
Figure 1 shows, you and the speaker position how to arrange, listen to position-with the speaker equidistant, slightly farther than the distance between two speakers, commonly known as the "Emperor bit." This is the approximate position to get the best focus and sound. If your seat deviates from the emperor's position, the sound stage will be around a speaker, shrink into a group, this condensation effect, due to the speaker and different, some speakers of the emperor will be relatively wide.
Set the distance between the two speakers, in a broad sound stage, and the clear center of the audio and video, in a way to finalize the exchange. The more open the speaker (assuming the same listening position), the wider the sound stage. If the speaker is divided, the middle audio will weaken or even disappear. If the speaker spacing is too narrow, the sound stage width will shrink.
The best listening angle, will produce a clear central audio-visual, and broad sound stage, you can experiment angle, the test chair before and after moving, there may be a position, central audio and video condensation, in the center of the speaker, showing a solid, accurate positioning. Select a single singer with simple accompaniment music to set the speaker spacing to determine the clear central audio.
One factor in considering setting the angle is the relationship with the room. Speakers and listeners, the same can have geometric relations, the speaker spacing is reduced, listening distance is also reduced. Or the speaker spacing is very separate, the listening position also become far. The sound role of the listening Room, the degree of influence on the sound, for long-distance listening position, larger than the near distance. That's because you hear more of the sound coming directly from the speakers, less reflective sound from the walls of the room. So, the farther you sit, the more space you feel, the closer you sit, the more direct you are, and the more immediately you feel about your music. Some speakers require a large distance, allowing individual sound to fuse together. If you are close to the speaker, high school low voice coordination has a big difference, you should sit in a far away from the speaker location.
2. Near the wall affects the amount of bass
Room environment, the speaker high school low sound overall coordination, there is a great effect, the speaker placed near the wall, will show the strengthening of the bass (called Room gain), increase the weight of music performance. Some speakers are designed to approach the back wall (the wall behind the speaker) and use this enhancement to achieve the natural harmony of high school bass.
These speakers will become thinner if they stay away from the back wall and close to the center of the room. Other, at least 3 feet from the back and side feet, otherwise the sound will thicken and heavy. If the speaker is placed in a restricted position, you should make sure that you buy the appropriate one.
When the speaker is close to the wall. The bass energy reflected back to the room, basically with the speaker output the same phase, which means that the low-frequency direct and reflected waves mutually enhanced, producing more bass. Figure 2 shows that in the No-noise room (non-reflective sound room) and the general room to detect the frequency response of different speakers, frequency responses to the picture of the loudness control frequency.
, not only bass enhancement, but also add the low-frequency extension of the speaker. Close to each side of the speaker, will enhance the output of the speaker bass. The speaker is placed close to the corner and will hear more bass.
The position of the speaker and the adjacent wall, the relationship between the frequency will be enhanced, the correct placement, not only extend the speaker's low-frequency response, to complement the natural attenuation, but also to avoid the peak frequency and depression. Improper placement causes uneven frequency response and renders bass. That is, some frequency enhancement, corresponding to other frequencies, so that the regeneration of bass is not correct.

Figure 2 Speaker frequency response in the non-ringing room and indoor comparison

Figure 3a speaker from the back wall, side wall distance of the same low audio sound generated peak sag

Figure 3b Speaker from the back wall, the side wall distance different low audio sound flat

Figure 4 The same speaker in Figure 3 frequency response, in different room frequency response is different)
Figure 3a is the interior response diagram of the speaker (the response of the speaker is changed by the listening chamber) when it is placed in the offset position with the back and side walls. Remember the V-shaped 10dB notch (energy reduction) at approximately 200Hz, with spikes concentrated in 60Hz.
This result will be bass-enhanced, medium-low-lean. Move the speaker, so that the distance from the back wall and side wall, can make the response much smoother (Figure 3b). The same speaker response, shown in the different room locations in Figure 4.
These figures show that the room position of the speaker will affect the low frequency response. The speaker should be located in a different distance from the wall behind. A rule of thumb: the difference between the two should not be within the 33% range, for example, if the speaker from the wall 3 feet away from the back wall at least 4 feet.
Many speaker factories will mark the right distance from the back wall and side wall. The test mark refers to the distance from the bass cone to the wall, which, according to the suggestion of the Speaker factory, starts to swing and then begins the experiment.
Finally, the speaker from the side of the wall how far, will affect the reflection of the side wall, the closer to the edge of the wall to reach the listener's side wall reflected sound is more-this is not good. If you have to deal with the narrative later in this chapter, close the speaker to the side wall, there will be no significant impact like the wall without treatment.
3. Speaker and listener position, affect room style audible degree
In addition to deepening the bass extension, make the low audio sound smooth, the correct speaker pendulum position, reduce the room resonance style to hear the degree. Room resonance style, later this chapter talks and, is several frequency enhancement, produces the frequency response peak, the room pattern also will produce standing wave, it is stagnant in the room high and low sound pressure, will let the sound dye. The type of room standing wave is determined by the room size and the location of the sound source, and the speaker and listener are arranged in the best position to obtain a smoother low-frequency response.
A well-known rule of thumb is that for the best low-audio sound, the speaker and the back wall distance, which is one-third of the room length. If there is no way, try it one-fifth. These two positions, slowing the stirring of standing waves, help the speaker to blend with the room. The listener's ideal location in the room is two-thirds places.
Start with this basic configuration, then move the speaker and listening chair in a micro step and play the bass much music.
Listen to the bass in the smooth and extended, as well as the bass and other frequencies of the degree of blending. When you find the most flat bass position of the speaker, you should also hear the improvement of the midrange clarity and resolution.
An excellent signal for evaluating indoor bass and midrange sounds, developed by the Sound Science Company (ASC), is called the Music test Tone (MATT). This particular pitch is gradually rising to a burst of silence, and ideally, you should hear a burst of sound and a quiet interval. If you listen to headphones or ears close to the speaker, each burst is clearly audible, but when the sound is changed by the listening chamber, some of the rising bursts of audio will be contaminated or tampered with, showing problems with these frequencies in the listening room. Move the speaker and listen to Matt, you can easily find the best working position in the room. (Matt's signal is available in the Stereophile test sheet CD2, as well as a more detailed explanation of how this unique test signal can be used.) Best found speakers and listening chair position, to reduce the standing wave method, is a computer program called "Thelisteningroom" by the Sittingducksoftware agent, can contact Audioadvisor (800-942-0220) about the details. This procedure asks your room size, speaker and listening position. Displays the frequency and amplitude of the room resonance mode when the listening point is configured. When you are inside the program, moving the speaker and listening position, the screen will show the effect of the actual playback, so the most appropriate speaker and listener location can be found. "Thelisteningroom" is highly recommended in the position of the speaker.
4. The distance from the back wall affects the sound stage
Usually, the farther away the speaker is from the back wall, the deeper the sound stage. The deep and broad sound stage, rarely produces in the speaker near the back wall, pulls the speaker backwards several feet, will cause the undesirable and the magnificent difference. Unfortunately, many living rooms, can not allow the speaker into the room, if the speaker must be close to the back wall, the back wall to be able to absorb sound.
5. Listen to the high and high school bass coordination
Most speakers, when listening to the height of change, the frequency response also changes. These changes will affect the mid-treble, not the bass balance. Typically, when your ears are the same height as the treble monomer, or when the tweeter is on the line, the speaker is the brightest (in other words, with the most treble). Most of the treble monomers are positioned between 32 "and 40" from the floor to match the typical listening height. If you have an adjustable office chair, it's easy to hear the effect of listening to the pivot, the coordination of high school bass.
Due to the high level of sound changes, different speakers vary greatly. Some of the species have a greater latitude, only to hear a little difference, in addition, when listening to only straighten the back, you can show high school bass balance big changes. Choose a listening chair to make your ears the best axis and help you get a good treble balance.
The difference in response is easy to measure, a typical set of speaker tests, including a set of response curves in various axes, measured on the line, the axis of the online response (usually the treble axis), is standardized into a straight line, the other curve, the axis and different heights of difference.
6. Angle of rotation
The angle is to position the speaker inward toward the listener, rather than facing forward (see Figure 5). There is no rule in the tuning angle, the most appropriate amount, with the speaker and listening room changes greatly. Some speakers need to be in the right angle, some face up to the top. The tune angle, affects the music performance many conditions, including the middle, the treble balance, the sound stage focus, the spatial sense and the direct nature.

Figure 5 speaker positioning is not in tune (left), there is a tune (right).
Most of the speakers, directly on the axis when the most bright sound directly in the LA. Listen to the position to hear, the angle of the increase in the amount of treble. Too bright speakers, often can be used in front of the speaker, to tame. Some models do not need to be in tune, and if the axis is facing the listener, the sound will be too bright.
Angular alignment increases the ratio of direct to reflected sound. That is because the angle of the speaker, release more direct energy to the listener, projected into the room less energy. The sound arrives at the surface of the room and is reflected before it reaches the listener. The Listening room has reflective side wall, the speaker angle in tune, there are clear benefits. Besides, the amplitude of reflection of the side wall is greatly reduced because of the angle adjustment. Conversely, reduce the angle of the tune, increase the reflective energy, plus space and air sense, reduce the angle of the tune can carry out sound stage, create a sense of surround.
Similarly, the angle of the tune tends to improve the sound stage focus, as well as audio clarity. When the angle is in tune, many speakers provide a more condensed, sharp line of sound stage. Audio and video are more clearly defined, tight, strong, rather than proliferation, lack of specific space positioning, the best angle in tune, often in the treble too much, with the strong central audio-visual, exchange adjustment. Too much angle in tune, sound stage focus is good, however, sound performance is often too bright, no angle in tune, high-pitched balance smoother, but the audio is more blurred.
The angle of the tune, also affect the overall performance of the width of scale. There is no angle in the tune, will produce a larger, surging, but less accurate sound stage. The outline of the instrument is less clear, but the performance is larger and wider. Speaker angle in tune, reduce the sound stage display size, but will bring more accurate audio and video configuration. Then, the amount of angle in tune, depending on the speaker, room, personal preferences. Nothing can replace the audition, adjust the angle, and then listen.
Each speaker has the same angle, which is very important. This is easiest to achieve, can be measured from the back wall to the rear edge of the speaker to come, this distance, with the angle of the degree of change and different. Another speaker repeat the same procedure, adjust the angle of adjustment, so that the distance and the first speaker match. Another way to determine the same angle of tune, is to sit in the listening position, observing the inner edge of the speaker, you see each speaker box side panel should be the same amount, the same angle in tune, the sound stage is very important, because the frequency of the speaker, with the angle of the tune change, from two speakers issued the same frequency response, the sound stage Accurate audio-visual pendulum, can be said to be an important contributor.
7. Swing of dual-phase and two-pole speakers
Two-phase speakers before and after the generation of sound, electrostatic speakers belong to the dual-phase speaker, because its diaphragm in the open space, rather than in the box, before and after the same sound. The back sound of the two-phase speaker is reversed with the front sound waves. That is, when the diaphragm forward, in front of the diaphragm to produce pronunciation pressure, at the same time in the rear of the diaphragm to produce negative sound pressure.
Typical two-pole speakers, in the box before and after the use of a series of traditional speakers monomer, two-speaker sound waves, the same phase. The difference between the double and the bipolar speaker is that the front and rear sound waves of the two-phase speakers are reversed, and the front and rear sound waves of the speakers are simultaneously phase.
When determining the double-phase speaker swing, the most important consideration, is at this time the speaker behind the wall, the impact on the sound, than the traditional audio source speaker (Direct Energy only One Direction) for the large. On the contrary, the side wall how to deal with the dual-phase speaker is not important, because it emits very little energy to the side wall.

Figure 6 Rpgskyline diffuser for effective dispersion of sound. (Rpgdiffusorsystems,inc. Provided)
Usually, two-way speakers like reflective back wall, after the speaker with some proliferation artifacts, in order to break down the reflected energy. The highly sound-absorbing rear wall will destroy the dual-phase speaker design purpose-you want to hear useful reflective energy. If the wall is flat, the surface can not disperse the sound, then the reflected sound, will be combined with direct sound, resulting in a reduction in the depth of the sound stage.
The bookcase, directly behind the two-way speaker, helps to diffuse (disperse) the sound waves behind it, and rock fireplaces, furniture and other irregular objects are useful. ASC Tubular sound absorbers, which can be placed directly behind a two-way loudspeaker, turn the reflective surface outward. You can also try a variety of RPG diffuser plates, the rpgskyline diffuser (Figure 6), is a dual-phase speaker that diffuses the ideal equipment behind Sonic. These 2-foot blocks are extremely effective for dispersing sound and can be affixed to a wall or glued to a stand. Each floor-to-ceiling speaker, about two or three pieces of skyline vertically folded up directly behind.
You still need to deal with the side walls so that you can absorb the reflections of the two-phase speakers. However, its narrow radiation pattern, the degree of influence, there is no sound source speaker so significant. In particular, when the two-phase speaker angle inward, adjust to listen to the position, the sound is best to listen. Similarly, dual-phase speakers have very little vertical diffusion, meaning that they rarely point to ceilings or floors.
Dual-phase speakers, also need more than the traditional sound source speakers, more toward the center of the room, you put the speaker near the wall, can not expect to get big and deep sound stage. To have psychological preparation, the vast majority of listening space, to the dual-phase speakers.
8. Speaker Position Summary
The speaker position is the only thing you can do and most important to improve the sound of your system. It is free, helps to exercise listening skills, with the same electronic equipment and speakers, the difference between bad and excellent sound. Before you spend your money on upgrading your equipment and handling your sound field, set your speaker position to understand your system's potential. To find the speaker, the best place to put then, the manufacturer provided by the Carpet foot nail (there is), adjust the level of the foot nail, so that the speaker will not shake, the weight of the speaker is all four (or three) pin bearing, if your floor is wood, in order not to be damaged by foot nails, under the foot nails, often with the speaker supply of metal round gasket.
You have seen the position of the speaker, providing precise, independent control of the different conditions of musical performance. You can change the speaker and back wall, edge wall distance, to control the quality and quantity of bass. Hearing the resonant condition of the room, you can find the speaker and listen to the best position of the chair to reduce. The balance of the treble can be adjusted by listening to the height and adjusting the angle of the speaker. The focus and width of the sound stage can easily be changed within the speaker angle. Move the speaker to the center of the room and the sound stage depth will increase. Want in the listening room, get the best sound, the positioning of the speaker, is a strong and powerful means. No need to spend a penny, make good use of it.

How to get the best sound in the Listening room