Svanpc++

[Daiana Parthemore]

SV977D is a Level 1 sound and vibration measurement analyzer designed specifically for measurement of building acoustics, occupational noise, and environmental noise. This device provides a new 1/2-inch microphone MK255, with a frequency range starting from 3 Hz and excellent long-term sensitivity stability.

SV 977D has built-in Bluetooth Interface that can wirelessly connect to smartphone applications such as Building Acoustics Assistant, expanding measurement functions specifically for building acoustics.

SV 977DA is a fully digital Level 1 sound and vibration analyzer designed specifically for general acoustic and vibration, environmental noise, occupational health, and building acoustic measurements.

This instrument has three acoustic and vibration configuration files that can be customized by the user, each of which uses independently defined frequency filters and RMS detector time constants for parallel measurement. Each configuration file provides a large number of results (such as SPL, Leq, Sel, Lden, LEPd, Ltm3, Ltm5, Lnn, LR15, LR60, Ovl, peak, maximum, and minimum values for sound measurements, and RMS, Ovl, peak, P-P for vibration measurements).

The advanced time history of each configuration is recorded on the SD card installed at the bottom of the instrument panel, providing complete information about the measurement signal, and can be easily downloaded to any PC through USB interface and SvanPC++software.

Frequency analysis of signals within 1/1 or 1/3 octave bands can determine the impact of high or low frequencies on overall values. The optional microphone SV 977D provides ultrasonic analysis up to 40 kHz. The ultrasonic wave band is usually considered to be a frequency range above 20 kHz.

The limit of allowable ultrasound level is usually represented by the Leq and Max values specified in the one-third octave frequency band, which are 20 kHz, 25 kHz, 31.5 kHz, and 40 kHz, respectively.

The SV 977D also provides a time-domain signal recording option - recording raw signal samples at a defined frequency of up to 48 kHz. The svanpc++program can perform post-processing on high-quality wave files (48 kHz, 24 bits), such as tone calculation.

Using SV 977D, the reverberation time of a room can be obtained through two measurement methods: pulse response method (pulse) and interruption noise method (attenuation). The choice of method depends on the type of sound source used. The pulse method is designed to use a pulse sound source (such as pistol shooting, petal explosion) for measurement, while the attenuation rule is used to measure the noise source (usually pink noise) when a room is excited by wide or narrow band sound.

Bluetooth built-in to SV 977 sound level meter The interface, along with smartphone applications, extends the measurement capabilities of all functions provided by smartphones. Smartphone applications help users preview results in the form of time history graphs and numerical values. The size of mobile device displays makes it convenient to display spectral views (such as one-third octave analysis).

For architectural acoustics, smartphone applications help users calculate sound insulation effects according to ISO 16283. The sound insulation effect is displayed on the display screen and displayed in a report format that meets ISO requirements.

It is an advanced PC software that supports SVANTEK measurement instruments, including the SV10x, SVAN95x, and SVAN97x series. This is an advanced application that enables various existing or extended functions, making each product easier to use.

The main module is free and provides functions such as downloading measurement data from the instrument to the PC, creating measurement settings, recalculating basic Leq/RMS, and displaying text measurement results in tables and graphics. The data can be exported to spreadsheets or text editors.

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