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SPECIFICATIONS

          State of inputs...

 

The SOUND4 IMPACT has four inputs: Digital, Analog, IP (Livewire or SOUND4 IP Connect) and PCI.
 
On the software interface, the currently used input is indicated by a triangle on the left side of its name.

           2-Band AGC...

 

In the SOUND4 IMPACT, the first processing function is the “2-Band AGC”: it is an automatic gain control which main purpose is to "stabilize" the loudness level applied to the input of the processor to rub out noticeable level differences between recent and old titles.
 

           The Tone FX...

 

The “Tone FX” makes coloring of sound possible before dynamic processing. To do so, it groups together two types of processing functions:

 

  • A 4-band parametric equalizer;

  • An effect system making possible to strengthen low frequencies and high frequencies.

 

The two functions offer results that are entirely different. In “Basic” mode, use of the four parametric equalizers is simplified to the maximum. Only the gain for each correction is accessible. For “FX Bass” and “FX Treble”, dosage of the effect is also made accessible. In “Advanced” mode, you have access to all the parametric equalizer parameters (gain, frequency and Q factor).

          The Stereo FX...

 

SOUND4 IMPACT has a true stereo enlarger, 100% mono compatible. Its role is to sublimate the existing stereo image. It will thus never create stereo on mono sources.
 
In addition to embellishing the stereo image, it has a 6-band stereo image limiter acting on the control of the energy transmitted by the stereo sub-carrier at 38 kHz. This unique functionality thus limits annoyances currently occasioned by the traditional enlargement processes. The stability of reception in areas disturbed by multiple path is thus very greatly optimized.

          The "6-Band Process"...

 

The “6-Band Process” is the heart of the dynamic processing of SOUND4 IMPACT. A single algorithm guarantees the gain in each of the bands in order to complete sound stabilization. “Coloring” is controlled by the Fidelity parameter: thus, it is possible to have a purist and colored sound texture.
 
The “6-Band Process” is featured with the revolutionary algorithm S.I.S (Sound Impact System), which makes possible to maintain the authenticity of the original sound attacks.

          The "3-Band Limiter"...

 

The first purpose of the “3-Band Limiter” is to prepare the work of the Final Limiter. It is also provided with a very powerful predictive algorithm, which has been simplified to the maximum in order not to be encumbered with useless parameters.

          The "Final Limiter"

 

The "Final Limiter" comprises two sections, one for FM applications, another for HD application.
Section for FM firstly consists of a "Bass Clipper" which guarantees powerful bass without distortion, then the FM limiter and the MPX limiter.


Section for HD is specifically designed for high quality digital applications (HD / DAB / DRM), it is a Look-Ahead type limiter. In this mode the outputs are not limited to 15kHz.
 

          Assignment of outlets

 

The outlets of SOUND4 IMPACT are fully assignable. For example the analog outlet may replicate the signal which is applied on the analog input, the digital outlet delivers an HD signal, the TX1 outlet delivers the MPX signal and the TX2 outlet drives the 19kHz pilot signal.

           The 4-band Paramectric EQ...

 

The icing on the cake… The parametric 4-band equalizer is not there to "build a sound", it allows some last little touch up if necessary before the final limiting section.
 

In “Basic” mode, use of the four parametric equalizers is simplified to the maximum. Only the gain for each correction is accessible. For “FX Bass” and “FX Treble”, dosage of the effect is also made accessible. In “Advanced” mode, you have access to all the parametric equalizer parameters (gain, frequency and Q factor).

6-Band FM/HD Processor - The Big One!