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This phenomenon creates complex sounds and is underlined by the fact that a combination of harmonics can

produce additional tones, known as interference or residual tones. All of these tiny sound portions contribute

to the sound of certain instruments. The human ear, which is highly sensitive, can detect even minimum

changes in the harmonic structure of a sound.
By experiencing the CD quality of 18 bit-converters etc., we have made considerable advances toward the

naturalness of sound, yet still recordings do not sound like the music in a concert hall. Why is there a

difference?
Here, the keyword is “intelligent hearing”: the visual contact with the musicians enables us to concentrate our

attention on a certain instrument which results in an intensification of the sonic experience. The listener

sitting in front of a speaker system lacks this spatial experience and at the same time the visual feedback

aspect of listening to live music. The perceived positioning of instruments is made even more difficult since

the dispersion of the sound is not homogeneous, i.e., widely panoramic, but usually reduced to two sound

sources.
In particular, the loss of upper harmonics during the transmission of the sound additionally affects the perceived

positioning of the instruments and the transmission of room ambiance. The reason for this loss in sound

quality is the inadequacy of the sound recording and reproduction processes.
Each link in the transmission chain - from the microphone via mixers, effects devices, tape recorders amplifiers

etc., to the loudspeakers - causes a loss in sound quality. Each time the sound is processed, it becomes

audibly less “natural”.

5.3 On Psycho-Acoustic Devices

In the field of what is known as psycho-acoustics, numerous terms such as enhancer, exciter, psycho-

acoustic processor, psycho-dynamic processor, clarifier etc., are commonly used. What do these terms

actually mean? The following chapter will shed some light on this.
Although the psycho-acoustic effect of enhancers and exciters etc., has been known for several decades,

the function of these devices has been deliberately surrounded in mystique, to increase their appeal.
However, it is fairly clear that all devices in this field are based on certain technically repeatable methods of

functioning. Basically, three principles apply:

s

Sound improvement by means of dynamic frequency correction.

s

The generation of a “wider” sound with the help of phase shifting with respect to delay times.

s

The enrichment of the program material with artificially generated harmonics.

Independently of each other, each of these methods produces a certain effect which is perceived as a

subjective enhancement within the sound.
These methods are described in more detail in the following:

5.3.1 Frequency Correction

The boosting or cutting of certain frequency ranges is the simplest form of sound modification. Equalizers

can correct the sonic image in order to produce a sound that is more pleasing to each taste.
So-called “treble boosters” achieve this effect by emphasizing the high frequencies, which the listener perceives

as a transparent sonic image.
Within the BEHRINGER ULTRAFEX PRO, any frequency correction is combined with a frequency-dependent

phase shift, which results in a sound that is “warmer” and more musical.

5.3.2 Phase Shifting

The term phase shift describes the displacement of a signal’s phase in relation to its point of origin. As a

matter of principle, the phase shift produces a delay within the signal.
If the delayed signal is added to the original signal, the resultant signal becomes “wider”. Below time delay

values of 20 msec. the brain perceives the delayed arrival of the two signals as the arrival of one signal,

which results in the desired “pulse enlargement” effect, sometimes called “3-D” effect by other manufacturers.

5. TECHNICAL BACKGROUND

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Содержание ULTRAFEX PRO EX3200

Страница 1: ...1 E User s Manual Bedienungsanleitung D ULTRAFEX PRO EX3200 Version 1 1 May 1998 www behringer de www audiovias com...

Страница 2: ...O EX3200 Type designation and if applicable Article No which refers to this declaration is in accordance with the following standards or standardized documents x EN 60065 x EN 61000 3 2 x EN 55020 x E...

Страница 3: ...gh the ventilation openings Heat The appliance should be situated away from heat sources such as radiators heat registers stoves or other appliance including amplifiers that produce heat Power Source...

Страница 4: ...Shift function allows you to control the frequency range of added bass punch s Surround processor provides you real spatial enhancement and improved stereo imaging s Built in Noise Reduction system wi...

Страница 5: ...the most important member of the BEHRINGER family With your highly competent suggestions for new products you ve greatly contributed to shaping our company and making it successful In return we guara...

Страница 6: ...On Psycho Acoustic Devices 16 5 3 1 Frequency Correction 16 5 3 2 Phase Shifting 16 5 3 3 Artificial Harmonics Generation 17 5 4 The Bass Processor Of The ULTRAFEX PRO 17 5 5 The Surround Processor Of...

Страница 7: ...onic processor we have set new standards Previously encountered problems of restricted leveling range plus increased noise level and audible distortion during signal processing are typical shortcoming...

Страница 8: ...grated into the ULTRAFEX PRO With this processor the intensity of the stereo effect can be dramatically improved The program material gains in liveliness depth and transparency As in a cinema with its...

Страница 9: ...t of power supply disconnection or failure These relays are also active at switch on to isolate the ULTRAFEX PRO until the power rails have settled thus preventing the possibility of a potentially dam...

Страница 10: ...lar markers with two of these triangles opposing each other Your ULTRAFEX PRO is set to the operating voltage printed next to these markers and can be set to another voltage by turning the fuse holder...

Страница 11: ...relief clamp Strain relief clamp Ring cold ve For connection of balanced and unbalanced plugs ring and sleeve have to be bridged at the stereo plug 1 Ground Shield 2 hot ve 3 cold ve For unbalanced u...

Страница 12: ...the amount of sound enhancement Please make sure that the sensitivity of the unit is high enough especially at low level signals Otherwise audible pumping may occur The first LED should always be illu...

Страница 13: ...ocessor section 9 The SHIFT switch determines the cut off frequency of the bass processor Depending on the program material you can select between Low and Ultra low 10 The LOW MIX control of the low b...

Страница 14: ...o benefit from our extended warranty 15 FUSE HOLDER VOLTAGE SELECTOR Please make sure that your local voltage matches the voltage indicated on the unit before you attempt to connect and operate the UL...

Страница 15: ...ervous impulses Psycho acoustics examines the effect of sound on the listener and the reasons for certain sonic impressions How a sound is interpreted is influenced by a lot of factors most of them ca...

Страница 16: ...cessor clarifier etc are commonly used What do these terms actually mean The following chapter will shed some light on this Although the psycho acoustic effect of enhancers and exciters etc has been k...

Страница 17: ...mental bass definition With the help of frequency selective phase shift combined with sub bass boost the bass processor of the BEHRINGER ULTRAFEX PRO is capable of compensating for this loss giving th...

Страница 18: ...ies with other devices or by inserting it into the line inserts of a mixer Fig 6 1 Using the ULTRAFEX PRO as in line processor 6 1 2 The ULTRAFEX PRO As Sidechain Processor The following illustration...

Страница 19: ...m material by varying the cut off frequency using the SHIFT and MODE switches and or the TUNE and PROCESS controls 4 Now switch in the noise reduction section by depressing the AUTO NR switch and adju...

Страница 20: ...NGER ULTRAFEX PRO as the last component in the chain of effects devices The summed signals will then be routed through the ULTRAFEX PRO and sent back to the master via the effect returns With the SOLO...

Страница 21: ...ive music the BEHRINGER ULTRAFEX PRO offers astounding advantages 1 In audio systems for announcements and background music the BEHRINGER ULTRAFEX PRO is placed in a similar way to recording and tape...

Страница 22: ...04 typ 20 dBu 1 kHz Gain 1 IMD 0 01 typ SMPTE Crosstalk 100 dB 22 Hz to 22 kHz BASS PROCESSOR Type Dual Mode Bass Processor Low Mix variable 0 to 6 MULTIBAND PROCESSOR Type Natural Sonic processor wit...

Страница 23: ...cumstance If the buyer fails to submit a written repair order within 4 weeks after notification BEHRINGER INTERNATIONAL will return the unit C O D with a separate invoice for freight and packing Such...

Страница 24: ...not entitle the buyer to claim consequential damages In no event shall the liability of BEHRINGER INTERNA TIONAL exceed the invoiced value of the product 7 OTHER WARRANTY RIGHTS This warranty does no...

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