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electronics_shamim

Microphone Echo/delay IC datasheet.

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I found this
http://www.web-ee.com/Electronic-Projects/projects/digital_echo/index.htm

http://documentation.renesas.com/eng/products/assp/rej03f0170_m65845afpds.pdf

http://documentation.renesas.com/eng/products/assp/rej03f0085_m65856sp.pdf

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Sir,

While thanking you for the reply, it is very cumbersome to get the IC in India and to make a pcb. Rather, I would prefer a simple circuit or complete schematic/pcb layout/component layout with IC datasheet. So, that i can make out a pcb for that and fit it unto my mic input (tape deck) and the delay adjustable by volume control to a max of (120 or 130 us. arppx.). Does any circuit have this facility?

I think simple transistor (cascading form) built around some R/C network will also have some echo effect.

I appreciate your immediate feedback and also need help from you further.

Regards,
Shamim-India.
====

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You won't get much resolution without specialized chips. Here is an article about a simple form of audio delay using 1 bit ADC. Perhaps this will help.

http://www.elecdesign.com/Articles/Index.cfm?AD=1&ArticleID=8056

MP

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