simple 15m/sec delay network

mitchyz250f · 12th May 2008, 12:45 PM

Is there a simple way to make a 15m/sec sound delay circut. this is for a car.

mitchyz250f · 13th May 2008, 01:35 PM

bump

AndrewT · 14th May 2008, 11:29 AM

delay turning on the ignition for 0.015Seconds.

mobyd · 16th May 2008, 11:54 AM

The simplest delay generator is the PT2399 - regrettably the shortest delay it can do is around 30ms. The NJU9702 does 0.5 to 32ms in 0.5ms steps, but you need a small micro to load the timing register (the littlest pic would do it). Other than that...a stretch limo with a 17 foot long cab would give you 15ms end to end.
M

mitchyz250f · 16th May 2008, 01:05 PM

"The simplest delay generator is the PT2399 - regrettably the shortest delay it can do is around 30ms. The NJU9702 does 0.5 to 32ms in 0.5ms steps, but you need a small micro to load the timing register (the littlest pic would do it). Other than that...a stretch limo with a 17 foot long cab would give you 15ms end to end."

This is for a stretch RSX. The difference between my front speakers and rear is 3.002 ft.

Where can I purchase a NJU9702 and what s a small pic?

mobyd · 16th May 2008, 09:46 PM

Quote:

Originally posted by mitchyz250f
"The simplest delay generator is the PT2399 - regrettably the shortest delay it can do is around 30ms. The NJU9702 does 0.5 to 32ms in 0.5ms steps, but you need a small micro to load the timing register (the littlest pic would do it). Other than that...a stretch limo with a 17 foot long cab would give you 15ms end to end."

This is for a stretch RSX. The difference between my front speakers and rear is 3.002 ft.

Where can I purchase a NJU9702 and what s a small pic?

Googling will find you at least 2 vendors selling in onsies twosies. I bought some off Hongkong Inventory (a trading experience somewhat similar to Russian roulette but without the pleasant bits) but if I was doing what you are doing, I'd use 2 PT2399s, front set for 30ms and rear for 45ms. You'll never notice the 30ms absolute delay. PT2399s are available everywhere (Ebay etc) and are cheap as ch.... oh never mind. BTW a small pic is something like a PIC12F675.
M

mitchyz250f · 18th May 2008, 09:07 PM

Thanks. I will need to investigate a little and then get back with the results or more questions.

Thanks again.

12th May 2008, 12:45 PM	#1
mitchyz250f diyAudio Member Join Date: Nov 2004 Location: ga	simple 15m/sec delay network Is there a simple way to make a 15m/sec sound delay circut. this is for a car.

14th May 2008, 11:29 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	delay turning on the ignition for 0.015Seconds. __________________ regards Andrew T.

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13th May 2008, 01:35 PM	#2
mitchyz250f diyAudio Member Join Date: Nov 2004 Location: ga	bump

16th May 2008, 11:54 AM	#4
mobyd diyAudio Member Join Date: Sep 2004 Location: Auckland	The simplest delay generator is the PT2399 - regrettably the shortest delay it can do is around 30ms. The NJU9702 does 0.5 to 32ms in 0.5ms steps, but you need a small micro to load the timing register (the littlest pic would do it). Other than that...a stretch limo with a 17 foot long cab would give you 15ms end to end. M

16th May 2008, 01:05 PM	#5
mitchyz250f diyAudio Member Join Date: Nov 2004 Location: ga	"The simplest delay generator is the PT2399 - regrettably the shortest delay it can do is around 30ms. The NJU9702 does 0.5 to 32ms in 0.5ms steps, but you need a small micro to load the timing register (the littlest pic would do it). Other than that...a stretch limo with a 17 foot long cab would give you 15ms end to end." This is for a stretch RSX. The difference between my front speakers and rear is 3.002 ft. Where can I purchase a NJU9702 and what s a small pic?

18th May 2008, 09:07 PM	#7
mitchyz250f diyAudio Member Join Date: Nov 2004 Location: ga	Thanks. I will need to investigate a little and then get back with the results or more questions. Thanks again.

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