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Introduction:
Support for ASIO driver testing can use a variety of excitation sources: time delay spectrum, sweep frequency, MLS (maximum length sequence), noise excitation signal or user-defined signal. EASERA supports up to 32-bit data resolution (determined by hardware to compensate for hardware frequency response and the response of the speakers and microphones used). Automatic input volume control optimizes the signal to noise ratio. Once the data is used, EASERA can perform powerful editing, including user-defined filters and window functions, addition, division, file merging and segmentation, filtering, averaging, integration, and differentiation. The RTA module displays a real-time level map, which is a histogram or a spectrogram. Measurements can be weighted and displayed in logarithmic or linear coordinates within the resolvable range.
a brief introdction:
EASERA (Evaluation Response and Analysis for Electronic and Acoustic Systems) has all the useful and important audio test and measurement tools - MLS (Maximum Length Sequence), TDS (Time Delay Spectrum) and Double FFT (Fast Fourier Transform) - it only A portable computer and a "good" sound card are required.
Learn about its incredibly powerful benefits, flexible software architecture, detailed post-processing, and comparison of the results of different measurement and analysis methods. These important feedbacks have been applied to the first official release of EASERA, which is now available from Renkus-Heinz.
Ahnert's EESTERA software takes advantage of the GHz CPU to turn a portable computer with a sound card into a complete audio test system, and powerful analysis tools make it easy to access different viewports for the same test. The program consists of four separate modules - the measurement module, the signal generator, the real-time analyzer and the post-processing module. EASERA is a two-channel measurement system with a maximum sampling frequency of 48KHz. The EASSERA PRO can have up to 32 simultaneous inputs and outputs, with independent volume control, recording, playback module, and resampling up to 192KHz. The optional module includes an MLS module that contains Hadamard transforms and cross-correlation functions. The TEF-TDS module is developed with GOLD LINE to enable time-delay spectrum measurements that can be fully processed in software. The TDS software includes a tracking filter that is highly immune and requires a TEF-USB analog-to-digital/digital-to-analog converter/preamplifier. In the MLS module, you need to use a TEF-USB input device or an advanced sound card.
When some advanced features require special hardware, such as a calibrated microphone, EASERA can use any microphone and support all current sound cards. The software is also compatible with the Windows® sound card drivers used, including Direct Sound®, WAVE and ASIO drivers.
Designers of audio equipment, electroacoustic systems, and sound-building environments understand that simple measurement techniques are unlikely to capture everything we hear. The EASERA design provides multiple views of the same data stream for easy comparison, sharp analysis, and possibly better than currently available programs. EASERA's post-processing engine can calculate all acoustic functions based on the ISO 3382 standard, based on octave or 1/3 octave filters. The real-time analyzer provides multiple viewports for fast analysis or accurate acoustic environment analysis viewports. Functions and measurements include "waterfall" energy time curve (ETC), impulse response, STI (language transmission index), %ALCONS (percentage of consonant clarity loss), direct sound and total sound pressure level, RMS, crest factor, distortion, etc. Wait. EASERA's derived data is available in many formats including WAVE, EASE®, TEF® and MLSSA®. In fact, all EASERA functions can be automatically converted through a target-oriented user interface. The setting of the data is only determined by the PC memory. The size of the FFT word area is determined only by the CPU capability.
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