See VituixCAD User Manual for details, installation and using.

Download the latest build: VituixCAD2_setup.exe. See also changelog and license agreement.

## Crossover simulation |
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Crossover topologies | Formal ladder, parallel or series | |

Free form | ||

Response data | Single direction | |

Few directions | ||

Quasi full space with responses in two planes | max 360 directions in hor plane + 358 in ver plane = 718 | |

Off-axis with constant or variable angle step | ||

Off-axis angle coverage -179...0...+180 deg or less | ||

CLIO balloon | hor & ver planes only | |

EASE balloon | hor & ver planes only | |

VACS balloon | hor & ver planes only, Klippel NFS compatible phi | |

Active components | High/low pass, minimum phase (IIR) | 1st, 2nd, Bes, But, Che, L-R 2nd-8th order |

High/low pass, linear phase (FIR) | 1st, 2nd, Bes, But, L-R, 2nd-8th order, Horbach-Keele, Brickwall | |

Parametric EQ, minimum phase (IIR) | ||

Parametric EQ, linear phase (FIR) | Gain EQ, Phase EQ | |

All pass, minimum phase (IIR) | 1st, 1st inv, 2nd, 2nd inv | |

All pass, linear phase (FIR) | 1st, 2nd, Bes, But, L-R 2nd-8th phase linearisation | |

Shelving high/low pass, minimum phase (IIR) | 1st, 2nd order | |

Shelving high/low pass, linear phase (FIR) | 1st, 2nd order | |

Buffer | ||

OP amplifier | ||

Digital biquad with free coefficients | compatible with RBJ or miniDSP | |

Transfer function file | frd/txt response | |

DSP compatibility | Behringer, FourAudio, Generic (RBJ), (Hypex), miniDSP, Nova, RAM, Xilica | |

Passive components | Resistor | |

Capacitor | ||

Inductor | ||

Transformer | ideal | |

Wire | ||

Ground | ||

Driver | location XYZ mm, rotation R deg, tilt T deg | |

Library blocks | Standard library blocks | |

User designed blocks | ||

Value calculation with block attributes | ||

Option list for calculation | ||

## Graphs |
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On-axis magnitude | Total SPL | |

Driver's SPL | ||

Power & DI | Power response | |

Directivity index (DI) | ||

CTA-2034-A spinorama (LW, ER, ERDI, in-room) | ||

Off-axis/directivity | Off-axis as Line chart | |

Off-axis as Waterfall | ||

Off-axis as Surface chart | ||

Off-axis as Polarmap | ||

Polart chart at selected frequency | ||

Normalized by selected angle | ||

On-axis phase | Total normal phase | |

Total minimum phase | ||

Total excess phase | ||

Driver's normal phase | ||

On-axis group delay | On-axis normal group delay | |

On-axis excess group delay | ||

Filter | Transfer function magnitude | |

Impedance | Generator load impedance magnitude | |

Generator load impedance phase | ||

Buffer load impedance magnitude | ||

Total buffer load impedance magnitude | ||

Equivalent Peak Dissipation Resistance (EPDR) | ||

## Optimizing |
On-axis SPL | |

Listening window /CTA-2034-A | ||

Driver SPL | ||

Power response | ||

In-room response /CTA-2034-A | ||

Filter transfer function at driver terminals | ||

Preference rating | ||

Minimum impedance constraint | ||

Maximum gain constraint | ||

Frequency range contraint | ||

Optimizes crossover connection | ||

Optimizes component values/parameters | ||

Ideal (linear) target with tilt | ||

Optional HP and LP | ||

Linear-phase target | ||

Target as txt/frd file | scale, delay, invert, smooth, minimum phase | |

## Parts list |
Parts list | |

## Time domain |
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Parameters | Sample rate | 44100-192000 Hz |

FFT length | 8192-262144 | |

Taps | 256-131072 | |

Window function | 12 types | |

Delay | ||

Traces | Impulse response | |

Impulse in dBFS | ||

Impulse envelope (ETC) | ||

Step response | ||

IR view and export | Buffer out | |

Driver in | ||

Driver SPL | ||

Total axial SPL | ||

Listening window SPL | ||

Export for FIR gear/app | wav, txt, bin | |

## Power dissipation |
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Signal parameters | Crest factor | |

Flat spectrum | ||

Pinky spectrum | adjustable LP | |

M-Noise | ||

HP and LP | ||

Graph traces | Power spectrum | |

Current spectrum | ||

Voltage spectrum | ||

Peak voltage spectrum | ||

Total wide-band dissipation | ||

## Radiator simulation |
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Radiator types | Infinite baffle | |

Closed | ||

Bass reflex | ||

Double tuned bass reflex | ||

Passive raditor | ||

Band pass type 1 | ||

Band pass type 1 passive radiator | ||

Band pass type 2 | ||

Band pass type 3 | ||

Transmission line | ||

Horn | ||

Wave guide | ||

Leaking ports | ||

Radiator options | Multiple drivers | 1-12 pcs in parallel, series, 2||2, 3||3 |

Isobaric | series or parallel | |

Extra mass | ||

Output resistance | ||

Table alignment | vented with Thiele/Hoge/Bullock, closed with Vas | |

Drivers | Driver database | local, on-line |

Driver database filtering and sorting | ||

Calculation of T/S parameters | added mass, dual added mass, closed, known BL/Mms | |

Impedance models | Le+Leb+Ke+Rss, Z1k+Z10k | |

Graphs | SPL | half space total, cone, vent, passive, maximum, phase, full space total |

Power | real, apparent, maximum | |

Excursion | cone, passive, Xmax/Xsus, force/acceleration | |

Impedance | magnitude, phase | |

Group delay | normal GD | |

Velocity | cone, vent, passive | |

Force | cone, passive | |

Filter transfer function | ||

Misc | Enclosure+driver projects | save, open, project table |

Filter | link to crossover | |

Diffraction response | optional for full space total | |

## Diffraction simulation |
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On-axis...listening window | ||

Full space simulation | ||

Open baffle | ||

Multiple drivers | 1-50 drivers, line array with c-c step | |

Multiple corners | 3-32 corners | |

Rectangular drivers | ||

Rounded edge | ||

Floor reflection | ||

Wall reflection | ||

Off-axis response export | ver/hor, pos/neg angles, adjustable angle step | |

## Response merging |
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LF near field sum with baffle effect response | no baffle loss, spherical loss, diffraction response file | |

LF off-axis with directivity of HF off-axis | ||

LF off-axis with textbook polar pattern | ||

Merging of far field LF to far field HF | ||

Magnitude scaling | manual or by LF diameters and far field distance | |

Transition | Adjustable frequency | 40-5000 Hz |

Delay+phase matching | automatic or manual | |

Adjustable blending range | 0, 1/2, 1, 2, 3, 4 octs | |

Output options | Minimum phase | with or without GD of HF response |

Extended data for LspCAD 6.0 | ||

## Response tracing |
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Trace color detection | ||

Dark background support | ||

Grid rubber | ||

Trace rubber | ||

Image rubber | ||

Logarithmic Z axis | ||

Minimum phase calculation | ||

Smoothing | ||

## Response calculation |
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Multiple output | Ai + B | |

Ai - B | ||

Ai * B | ||

Ai / B | ||

B / Ai | ||

Ai / f | ||

Mirror Ai | ||

Normalize Ai | ||

Scale, Delay, Invert Ai | ||

Minimum phase Ai | band cropping and slope extension, delay maintain | |

Group delay Ai | ||

Real Ai | ||

B * Ai / A(0) | ||

Mic in Box Ai | ||

Uncap A z B | ||

Ai * piston directivity(Sd, angle) | ||

Single output | Sum of A | |

Product of A | ||

Average of A | ||

RMS of A | ||

Maximum of A | ||

Directivity index/factor of A | ||

Power response of A | ||

## Other calculators |
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Time window | ||

Wave length | ||

Near field | ||

Sample time | ||

Box volume | ||

Time align | ||

## Converting IRs to FRs |
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File type support | ARTA pir | |

CLIO mls, crp | ||

MLSSA text | ||

Plain text (without sample rate field) | ||

WAV | ||

FFT parameters | Left time window | optional, Rectangular, Bartlett, Blackman, Blackman-Harris, Blackman-Nuttall, Cosine, Hamming, Hanning, Nuttall, Tukey 0.25, 0.50, 0.75 |

Right time window | Rectangular, Bartlett, Blackman, Blackman-Harris, Blackman-Nuttall, Cosine, Hamming, Hanning, Nuttall, Tukey 0.25, 0.50, 0.75 | |

Minimum phase for calibration file | optional | |

Full resolution FFT (constant f step) | optional | |

Frequency response smoothing | none, 1/24, ..., 1/2 oct, 6th order Butterworth | |

Frequency range cropping | optional | |

Adjustable FFT length | 4k...1M | |

Graphs | Impulse response | impulse response, impulse envelope (ETC), impulse dBFS, step response, overlays |

Frequency response | magnitude, normal phase, minimum phase, excess phase, overlays | |

## Miscellaneous |
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User manual | ||

Measurement instructions | ||

Windows | ||

Linux | ||

macOS |

Few thousand do-it-yourself enthusiasts and commercial companies such as