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More about ranging  
… to accommodate the input signal level. In Audio Precision instruments, the ranging choices are shown in a dialog that allows you to select the maximum level you expect. For the APx585 and 586, six ranges…  
Retrieving a DUT serial number with APx  
… scan a barcode of the serial number at the beginning of the sequence. This way the serial number is shown in the report and also gets recorded in the CSV log file every time the sequence is run. …  
Comparing 2700 with PSIA to APx with Digital Serial Option  
… brought the two systems to parity, with the DSIO now surpassing the PSIA in several key areas, as shown in the document linked below. For example, the DSIO supports independent master clocks, allowing for…  
Using the APx Polar Plot utility with a manually operated turntable  
… 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…  
A Note Concerning Analysis of Pure Sine Signals Transmitted Using the AAC Codec  
… 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…  
Bluetooth Audio Testing: A Step-by-Step Guide to Setting up the APx Bl  
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  
Technote 11: Remote Test Data Retrieval: Send a FAX  
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  
APx500 Audio Analyzers & LabVIEW Software  
… it enables control of the APx515 completely independent of the APx500 control software. Figure 1 shows the top-level VIs on the DAQ Driver menu palette, accessed from the Instrument Driver sub-palette in…  
Technote 116: Testing Smartphones and Tablets  
…Smartphones and tablets provide many ways to route audio. This technote shows you how to make connections and test the sound quality for a variety of these signal paths. Where possible, we will use file-based test…  
Exporting AP2700 Measurements to a Database  
… Macro Description: ' This macro shows how to use the Microsoft DAO (Data Access Objects) ' collection to connect AP Basic to an MS Access…  
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