Live-Capture is a simple to use PC-based software tool for real-time live-sound measurements. Live-Capture measures up to 8 channels of time-domain and frequency domain simultaneously, using the program material (music and speech) with the audience present. Live-Capture Pro also employ traditional MLS and Chirp measurements.
The measured channels can be spatially averaged transfer function in real time.
Live-Capture is ideal for room tuning and sound reinforcement system optimisation. A range of newly developed analyzing tools provides fast and accurate tuning information; room-resonance detection in real time, delay-finder with group-delay and Cepstrum analysis, filter optimization and sound level logging.
Live-Capture uses threaded computing to acquire impulse responses between 0.35 to 11 seconds and suitable large FFTs to display time domain and frequency domain data in up to 23.4 frames per second refresh rate. Advanced complex averaging are used in both domains, taking the coherence and phase stability in account. The default resolution is 96 points per octave, 192 ppo is max.
Live-Capture Pro also acquires complex frequency response by applying either a maximum-length sequence (MLS) stimulus, Sweep Tone (time-domain chirp) or Dual FFT (using external Wavefiles) to the loudspeaker or sound reinforcement system under test. Live-Capture also offers a multi-channel Real Time Analyser with up to 1/48 octave resolution.
Sophisticated windowing functions allow the user to window out room reflections and focus on either equalizing the direct sound while retaining low frequency resolution or spatial averaging of the room transfer function.
Live-Capture introduces a novel Automatic Room Mode finder with calculation of parametric EQ that is used to remedy the dominant room modes.
For room tuning and sound reinforcement system optimization, Live-Capture supports spatial averaging. This allows the user to perform multiple measurements throughout the coverage pattern of the sound reinforcement system and base system eq on the weighted, spatially-averaged response.
Any captured transfer functions can be run trough an optimisation algorithm and produces a list of parametric equalization parameters (Frequency, Q and Gain) to fit the curve. For further optimization, eq parameters can be manually fine-tuned using a convenient graphical user interface.
Developers KitDevelopers kit available for Live-Capture measurement integration with DSP controller software. Real time measurement data such as curves from RTA, Transfer function (magnitude, phase, group delay, impulse response etc.) and other data parameters can be presented in the filter design window of most DSP based loudspeaker processors. The measured curves give a real time guide for the operator on adjusting the filters. Measurement system settings can also be adjusted from the DSP controller software. The Live-Capture measurement software can either run on the same PC as the controller software or remote over LAN. The integration kit includes a communication engine, supporting multiple NICs. Measurement data and settings data are communicated over LAN to a software plugin (.DLL) running on the DSP controller PC. The interface consists of a C++ header with portable data types and the exported DLL functions is fully declared so there will be no problem to access the functions via a .NET language. The development kit is fully documented and includes a working example application with full source code in C++. The included example requires MS Visual C++ 6 or higher.
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Download: Live-Capture Pro PDF Brochure
Lake is registred trademarks of Lab.gruppen. FIR-Capture, Quality-Capture, RT-Capture, Room-Capture, Live-Capture, WaveCapture and their logos are trademarks of GSW and 7dbm Electronics AB, Sweden. Copyright 2006-2013 GSW and 7dbm Electronics AB. All rights reserved. This product is protected by Swedish and International copyright and other intellectual property laws and international treaties. Unauthorized use, distribution or duplication of this product is strictly prohibited.