ATB precision  Analog  + digital Audio Analyser

Representation of the Audio Analyser

ATB is a PC-based measuring system for analogue + digital measurements for Audio. The measuring program operating under Windows 98 / XP / NT / 2000.

The hardware is a small box which is connected by USB to the PC. For digital measurements the signal comes from a CD, DVD player or Computer with digital output.

The Windows program is easy to handle therefore it has the functions of the other Windows programs. The user does not need a great experience in measurement. For every measurement there is a special program in the software. After selecting the measurement the program sets all parameters by itself. If the user needs parameters like distance, voltage or resistor there are help functions for an easy measurement. Over the clipboard the data or graph is easy to transfer to another program for documentation. The ASCI data sheet is also converted for every known CAD program for calculations.

Similar to the very expensive Measurement Systems the measurements are made by the USB box and the computer is only for handling and calculations. This is very different to the soundcard or PC-card systems. So the ATB is a Certified Quality System due to ISO 9001.

For the test of amplifier and other electrical components the ATB has a dynamic range of 150 dB. The frequency range is 1Hz to 50kHz. The generator has a 20 bit resolution with 4MHz converting rate.

Most of the acoustical measurements are only made with computer, for example the FFT measurement. One ATB measurement is the 4-fold FFT for room-independent speaker measuring. Other measurement which are only done with the computer are the 3-D Cumulative spectrum decay and the acoustical phase.

The ATB is for development and production as for Studio application.

For Studio digital measurements the ATB is very comfortable, because the test signal comes from a CD, DVD player fitting to the system.

For comfortable handling all out- and inputs are balanced or unbalanced. Also there is a switch for dBV or dBU.

There are two input channels with LINE and MIC input. The input range for the LINE is  -15dB to 40dB in 5dB steps. For the MIC input the range is –25dB to –5dB in 5dB steps. The MIC has a switchable 15V microphone power.

The output range is –43dB to 16dB in 1db steps. The Generator generates these waves:

Sine, Triangle, Rectangle, Pulse, Envelope, IMD and several Multiton  signals.

The distortion of the Sine at 1Khz is < 0.003%.