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Monday, March 12, 2012
John Murray 03/12/12 06:02 PM,Since the early 1980s, the term “time alignment” has been tossed around pretty freely, and with dubious degrees of accuracy. Note, however, that this was far from the first time the concept was noticed. Indeed, the engineers who provided the loudspeakers for the first “talkie” film, Al Jolson’s The Jazz Singer, noticed that the “taps” of the tap dancing scenes came out of the high-frequency (HF) horn and folded-horn low-frequency (LF) woofer at different times. Ever since, designers have been… View this story
Filed in: Live Sound • Feature • Study Hall • Loudspeaker • Measurement • Processor • Signal -
Thursday, September 01, 2011
John Murray 09/01/11 02:05 PM,When last we left off, you had just acquired a 3-D, FFT -based measurement system and were ready to use it to tune a sound system. (Click here to view the previous article.) So let’s get to it! The first thing to do is place the calibrated measurement microphone on a mic stand in the middle of the listening area, turn on all of the system’s loudspeakers and turn up the test signal, just as is done with a real-time… View this story
Filed in: AV • Feature • Poll • Study Hall • AV • Audio • Measurement • Microphone • Signal • Sound Reinforcement • System
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