DYNAMIC AUDIO MANANGEMENT(MIR-D Series)

MIR-D Series is based on the MIR-A series of digital audio processors, with access to a powerful new DSP processing platform, with comprehensive dynamic processing capabilities.
It not only inherits the professional performance and special functions of the MIR-A series, but also is equipped with two newly developed special functions of MARANI: Dynamic EQ (DEQ) and AUTO EQ (AEQ).
Dynamic EQ is a top-of-the-line and incredibly powerful feature that enables real-time dynamic compensation/attenuation management of audio systems, MIR-D Series provides 5-band filters on each input channel, including: 3 peak filters and low/high Shelving filter.
Unlike traditional fixed-work PEQ, DEQ only takes effect when the audio system needs it, and will gradually compensate/attenuate when the threshold is reached.
AUTO EQ (automatic equalization), one-key measurement of the system impulse response, can automatically calculate and correct the amplitude and phase curves, or manually design the target curve according to requirements, and generate FIR coefficients/PEQ parameters (IIR) through MARANI's exclusive algorithm processing.    While correcting the amplitude and frequency response, the phase problem is completely solved, and the system debugging can be completed quickly, so that the system debugging work can be done more with less.

1.Each input channel is equipped with Dynamic EQ (DEQ, dynamic equalization) exclusively designed and developed by MARANI®, which can perform real-time dynamic compensation/attenuation management for the audio system.  Each DEQ provides 5-band filters, including: 3 A peak filter and a low/high shelving filter.  Supports 4 working modes (up/down threshold for boost/decrease).  Each segment covers the full frequency range of 20-20kHz, and the peak filter also provides 3 Q value modes (ConstQ\VarQLTH\VarQHTL), which can freely design dynamic equalization activity correction (follow the preset Q value to gradually increase/decrease, small Q The value is gradually increased/attenuated to the large Q value, and the large Q value is gradually increased/attenuated to the small Q value), the audio signal is detected in real time,  and the threshold value is triggered/released to dynamically boost/attenuate the frequency band.  Provides independent preset save/recall to quickly duplicate designs and prevent loss, Demo mode analog signal activity prioritizes viewing of balanced designs.
2.Each channel is equipped with Marani® AEQ (Auto EQ, Chinese: Automatic Equalization), a new automatic calculation adjustment parameter designed and developed exclusively by Marani to design filter parameters.  Auto EQ automatic equalization algorithm, one-key measurement of the system impulse response, optional automatic calculation to correct the amplitude and phase curves, or manual design of the target curve according to requirements, through MARANI's exclusive algorithm processing, generate FIR coefficients/PEQ parameters (IIR) Insert the device.  While correcting the amplitude and frequency response, the phase problem is completely solved, and the system debugging can be completed quickly, so that the system debugging work can be done with less effort.
3.Each channel is equipped with a FIR filter of up to 1024 Taps, and the FIR convolution required by the system can be automatically/designed by MARANI's own AUTO EQ (AEQ, automatic equalization).
4.The machine runs at 96KHz sampling rate, the frequency response remains flat at 20-40Khz, the background noise is as low as -94dBu, and the maximum input level reaches +20dBu.
5.Full matrix mixing, any input channel can be sent to the output channel, and even several non-adjacent output channels can be superimposed and mixed to the physical output.
6.Each input and output channel is equipped with an RMS compressor, which can control the signal dynamics on the input channel or use it to shape the sound intensity.  The newly designed extremely low distortion peak limiter can prevent sudden large dynamic signals from damaging the speaker unit and effectively guarantee the safety of the system.
7.New MIR linear phase crossover filter: MIR linear phase filter is a new X-over filter, which has the shape of a classic filter (LR24/48) without any phase distortion and keeps the phase curve flat straight.
8.The machine is equipped with a standard network port, which can be directly connected to a PC through a network cable.  The default DHCP automatically obtains an IP address and completes all connections with one click.
9.The new marshalling setting can control 32 processors at the same time, and can control gain, mute, PEQ and polarity uniformly, which increases the convenience of multi-machine debugging.  The input channel is equipped

Dynamic EQ
DEQ Type	5-band dynamic filter per input: 3-band peak filter and high/low shelving filter
DEQ Mode	Boost Above Thr / Cut Above Thr / Boost Below Thr / Cut Below Thr
DEQ Configure	Threshold range：-30 ~ 20dBu；Release time：10 ~ 15000ms；Attack time：1 ~ 4000ms；Ratio：1~4:1（Gain）/1:4~1（Attenuation）；Freq：20 ~ 20kHz ；Gain/ attenuation：0 ~ ±12dB，Q value/bandwidth：0.5 ~ 128
Q Mode	ConstQ\VarQLTH\VarQHTL
Demo Mode	AUTO/ Manually：-40 ~ 20 dBu
Audio
Input impedance	＜10k Ohm balanced
Output impedance	＜100R Impedance balanced
A/D dynamic range	118dB
D/A dynamic range	118dB
Maximum input level	+20dBu
Maximum output level	+18dBu
Total harmonic distortion	≦0.003%(+4dBu 1kHz)
Frequency response	20Hz~40kHz
Crosstalk	≦-95dB
SNR	≧113dB (A weighting)
Noise floor	≦-94dBu (A weighting)
Common Mode Rejection Ratio	60dB
Number of analog input channels	4
Number of analog output channels	4/8
Rs485 control port	2
Network control port	1
DSP Processing
Signal generator	white noise/pink noise, level range: -30dBu~+10dBu
input & output gain	-18 dB ~ +12 dB, step  0.1dB
Noise gate	Threshold range: -80dBu~-45dBu Attack time: 1ms~1000ms; Release time: 1ms~1000ms
Dynamic loudness filter	Gain range: 0dB-10dB Attack speed: fast/medium/slow
Parametric equalizer	Input channels up to 31 optional types of PEQ output channels up to 8 optional types of PEQ
Optional types include	Bell filter, 1st order high Shelf filter, 2nd order high Shelf filter Variable Q high Shelf filter, 1st order low Shelf filter, 2nd order low Shelf filter Variable Q low Shelf filter, 1st-order low-pass filter, 2nd-order low-pass filter Variable Q low pass filter, 1st order high pass filter, 2nd order high pass filter Variable Q high pass filter, band pass filter, notch filter 1st order allpass filter, 2nd order all-pass filter with variable Q value
The center frequency	adjustable within the frequency range of 20Hz~20kHz with a step accuracy of 1Hz
Q value/bandwidth	The Q value range of Bell filter is 0.4~128, the step is 0.01 The range of the Q value of the Chevron/high-pass/low-pass filter is: 0.1~5.1, and the step is 0.01 The value range of bandpass/notch filter Q is: 4~104, step is 1
Equalizer gain range	-15dB～+15dB
IIR crossover filter	Butterworth slope: 6/12/18/24/36/48dB per octave Bessel slope: 12/24dB per octave Linkwitz-Riley slope: 12/24/36/48dB per octave NXF horn filter slope is 40/45/50/50/55/60/65/70/75dB per octave
MIR linear phase filter	Linkwitz-Riley: 24/48dB per octave,NXF-40per octave
FIR crossover filter	type; high pass/low pass/band pass/external import Taps range: 256 ~ 512,slope range 21 ~ 120dB per octave Time window type: Rect / Sinc / Keiser /Hanning / Hamming / Blackman /Blackman-Harris/ Blackman-Nuttal / Nuttal/Keiser -Bessel/Sine
RMS compressor	Starting threshold range: -10dBu~ +20dBu; Compression ratio range:2~32: 1; Soft and hard knee: 0~100% Attack time:0.1ms~1000ms; Release time: 10ms~15000ms Gain compensation:Maximum 12dB
Peak limiter	Threshold range: -10dBu~ +20dBu Attack time: 1ms~1000ms; Release time: 10ms~3000ms
Hard limiter	Threshold range: -10dBu~ +18dBu
Delay	The adjustable delay time of each input channel + output channel is 452ms, Step accuracy 0.0104ms (10.4us)
FIR filter	Each input channel and output channel can import FIR filter with 48kHz sampling rate and 512 taps
General
Preset	32
size	482x44x207mm 1RU
Package size	560x320x110(mm)
Net/Gross weight	3.0 Kg / 3.5 Kg