Using APx500 Software and an APx515B Audio Analyzer, Eric Schultheis demonstrates a series of audio measurements, providing insight into device performance.
… display to help pinpoint specific problems such as clipped words or dropouts. Additional results show average delay, delay vs. time, and the reference and the acquired waveforms.
The PESQ/POLQA Average…
In this post, we answer a common question: How can I measure the equivalent continuous sound level Leq,T and the A-weighted equivalent continuous sound level LAeq,T with my APx500 audio analyzer?
… RMS level of a signal from the FFT by integrating the power spectral density. This equation is shown as (2), below.
(2)
where L = RMS level pi = power spectral density of FFT bin i n = the total…
… Sweep method. APx can acquire both response curves and plot the difference if desired. Figure 1 shows frequency response curves measured by the two measurement methods. The two curves are identical below…
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