SoundPro Time Delay Analysis Firmware
TDA Submenu: Appears when the TDA selection is made in the main menu. This submenu shows the TDA test functions available on the Audio Integrator and Audio Consultant. If you select a test in the submenu that has not been added with an optional firmware purchase, the instruments indicates an "unlock required" message.
The TDA function synchronizes a swept audio generator (20-20,000 Hz) and a tracking audio 1/12 octave band level meter, with a variable filter Q of 6 to 150, graphing the detected level. TDA measurement eliminates room reverberations or echoes for accurate frequency response testing of speakers and microphones, as if they were in an anechoic chamber.
The TDA function is ideal for analyzing a room's sound decay across the frequency band. If multiple TDA frequency sweeps are performed, with each sweep delayed in time from the previous sweep, a sound decay pattern emerges. Room modes appear as ridges that remain at a higher level after other frequencies have decayed. Time-delayed graphs, showing us the room response over time, are called 3D waterfall graphs. The TDA sweeps may be downloaded to Terralink software for 3D analysis. (Terralink Software is included with TDA Firmware purchase on the SP395A or SP495).
Analyze speaker frequency response as if in an anechoic chamber