… set to a sample rate of 48 kHz.
Fig 2. Sine D/A generator, FFT with Equiripple window.
Figure 2 shows an FFT measured with an Equiripple window, using the Sine D/A generator set to a frequency of 1…
… Visual Basic.NET
In VB.NET, the references are accessed by selecting Project > Properties, as shown in Figure 1 (Note: The images shown below are from Microsoft Visual Basic 2008 Express Edition. The…
… recordings, the generator was set to generate a 1 kHz sine wave at -20.0 dBV (100 mVrms). Figure 1 shows the RMS Level results from analyzing these five .wav files with the Input Connector set to File (Analog…
… impedance curve is level dependent.
Figure 1. Schematic of loudspeaker impedance test.
Figure 1 shows a basic schematic of the Constant Voltage method, while Figure 2 shows the actual connections. Two…
… and adjacent bins, to determine its precise frequency. When finished, an FFT response graph will be shown, and the prompt will reappear with the frequency error displayed. Since the nominal sample rate of the…
… observe, for example, a walking zeros pattern, set the Digital Generator and Digital I/O panels as shown below. With an output sample rate of 48 kHz and the Samples/Step control set to 48 k, the zeros will…
… and de-emphasis on playback, established by the Recording Industry Association of America. Figure 1 shows the RIAA equalization curve for playback of vinyl records. To test a phonograph preamplifier, you would…
… builders.
Adding a .NET operation to the VEE program.
A simple sample program written in VEE is shown below. It does the following:
Opens APx500 with the application window visible. Turns off the…
… kHz.
Once the .wav file is created, you can import it into the DigitalGenerator of the SYS-2722 as shown in the figures below.
Figure 1 Importing an arbitrary waveform into the digital generator.
…
…e graph (Figure 4). It displays results for each of the analog input channels enabled in the APx software. As shown, it also retrieves the channel labels from the system (in this case, “Left” and “Right”).
Figure…
