… the APx Polar Plot utility has been revised to accommodate use of a manually operated turntable. As shown in Figure 1, there is now a turntable type called “None (manual rotation)”.
Figure 1: Select and…
… pure tone to appear radically different than what you would typically expect. For example, Figure 1 shows the FFT spectrum of a 1 kHz sine signal at a level of -1 dBFS transmitted from a current smart phone…
As in loudspeaker testing, the measurement of headphones and earbuds involves driving an acoustic transducer, acquiring the result with a microphone and analyzing the signal. Learn three important
… of the 2700 Series.
THD+N Our conservatively spec’d system residual THD+N is less than –112 dB, as shown in the graph below. This represents an advantage of about 9 dB over converter-based analyzer systems.…
For users getting familiar with the Bluetooth Duo module, here is a step-by-step guide to configure APx500 software (Bluetooth Duo requires v4.5 software or later) and pair it with your
This Technote describes how to set up the PC that controls System One to be able to automatically send a fax to a designated fax machine with the results, in both tabular and graphical form, of the
Fast Fourier Transform (FFT) analysis, which converts signals from the time domain to their frequency domain equivalent, is incredibly useful in audio test.
… from the LabVIEW application using its API, Young Bo purchased multiple APx520s. “Young Bo showed great foresight recognizing that an investment in capital test equipment must be able to pay off many…
… problems. You will need one adapter for each channel to be converted. The wiring diagram is shown in Figure 2. For balanced outputs, each of the two terminals of the balanced connection should have one…
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