Precision Stage Speed of sound and time difference?
Hi,
One cue your hearing system uses to localize a sound (i.e., to tell where a sound is coming from) is the slight difference in the arrival times of the sound at your ears. Your ears are spaced 21 cm apart. Consider a sound source 5.0 m from the center of your head along a line 45° to your right. What is the difference in arrival times? (Hint: You are looking for the difference between two numbers that are nearly the same. What does this near equality imply about the necessary precision during intermediate stages of the calculation?)
I might have the picture wrong, which is throwing me off. Where is the source located? Right above the right ear with a 45 degree angle to the center of the head? I think I can get the rest but I just cannot figure out how the picture looks like.
Thanks!
Just calculate the distances with brute force and pythagorean theorem.
Distance to right ear ^2 = ((5m) sin(45))^2 + ((5m) cos (45) - 21cm/2)^2
Distance to left ear ^2 = ((5m) sin(45))^2 + ((5m) cos (45) + 21cm/2)^2
Don't forget to convert the units. Divide that difference in distances by the speed of sound to get a time difference.
Planar motion stages actuated by planar motors, which can generate XY inplane motions, have the advantages of direct drive, high speed, noncontact levitation and simple structure. Such kinds of stages, however, are sensitive to interferences between axes, modeling uncertainties and disturbances because there are no mechanical restrictions in the XY plane. Conventional stage controllers based on classical control methods cannot achieve satisfied positioning performance for the stage. This book presents the design and implementation of precision motion control strategies for the planar motion stages. For ultraprecision positioning applications, dynamics modeling, decoupled control, sliding mode observer based compensation and performance evaluation for the surface motordriven planar motion stage are presented. For precision positioning applications, dynamic modeling, sliding mode observerbased control and hybrid sensorless control for the Sawyer motorbased planar motion stage are discussed. The authors believe this book can be a useful reference on precision motion control of planar motion stages or other types of precision positioning systems. Author: Gao, Wei/ Dian, Songyi Binding Type: Paperback Number of Pages: 160 Publication Date: 2010/01/05 Language: English Dimensions: 5.98 x 9.01 x 0.37 inches
This pro stand features a fully-adjustable tilt angle for precision placement of a wide range of amps, monitors and speaker cabinets. The locking tilt mechanism features 48 teeth for the utmost in security. Its 1' square steel tubing is very strong and holds even large amps. Arms are 12' long, approximately 16' apart and fold down for compact transport. For nearly 20 years, The Music People! Inc. has been on of the nation’s leading suppliers of microphones and pro audio equipment. The Music People! Inc. also owns and manufactures On-Stage Stands® support stands. Founded on a promise of quality, innovation and customer service, The Music People! Inc. is committed to the needs of music professionals throughout the world.
The Planet Waves American Stage Guitar Instrument Cables are designed to reproduce the natural tones of your instrument with zero interference. Made in the USA with audiophile quality wire, the low 28pF/ft capacitance is the sweet-spot for uncolored tone and the 22AWG oxygen-free copper conductor provides exceptional signal transfer. Full coverage of the American Stage cables comes from using 95 percent tinned copper braiding, eliminating handling noise and rejecting interference. Using only the finest materials, custom designs and precision USA manufacturing methods, Planet Waves American Stage cables deliver professional performance. The result is pure, natural tone guaranteed for life. Planet Waves American Stage Guitar Instrument Cable Features Exclusive In/Out technology: what you put into it is what you get out of it Geo-Tip: exclusive patented tip design for improved fit in all jacks In-Line solder joints for superior conductivity and strength Neutrik made plugs built to Planet Waves' patented design Limited lifetime warranty
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XY Precision Positioning Stage : DigInfo
(IAT) Intake Air Temperature Sensor?
i bought a stage 3 precision performance chip for my 1996 Chevrolet Monte Carlo Z34 and im trying to figure out where my iat sensor is on my car. any help!? thanks in advance
Those chips do not work. Send it back if they will let you. All they do is send false signals to your computer and make your car run richer. Using more gas and other things.
That chip you paid good money for can be had at Radio Shack for less than a dollar.
You cant get mega horsepower from a chip hooked to the IAT, it just wont happen.
If they wont take it back and throw it in the trash..........md
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