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Audio Delay Circuit

Aim

Design and Supply a schematic diagram of an 'Audio Delay' circuit.

Criteria

The design should use components that are available at Digikey.

The cost of parts should not be more than $25USD.

The power supply voltage should not exceed 12volts DC, 5V supply is prefered.

The prefered delay of audio is 1 second.

The circuit should function.

The audio input is from an electric microphone.

The audio output should drive an 8ohm 5w speaker.

Deliverables

A schematic diagram suppied in PDF format.

A Bill of Materials suppied in a PDF format.

The BOM list must include Digikey Part Numbers

Parts should Surface Mount devices
IC packages should NOT be BGA, prefer SOIC where possible, other packages to be OK first.
Resisters and Capacitors are 0805 size.

Bidders Questions
"use record/play ic"
No recording required. Just streaming audio with 1 second delay.

"what bandwidth is needed"
Required audio frequency range is between 500Hz and 4.5KHz. Project will be used in radio communication.

Færdigheder: Elektrisk Ingeniørarbejde, Elektronik, Ingeniørarbejde, Fabrikations Design, Mekanisk Ingeniørarbejde

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Om arbejdsgiveren:
( 3 bedømmelser ) Oxenford, Australia

Projekt-ID: #937272

8 freelancere byder i gennemsnit $176 for dette job

Bulba39

Please check your PM

$170 AUD in 5 dage
(16 bedømmelser)
5.5
bchandra1955

Professional automation enginner and electronics engineers team is willing to deliver your project, Brajesh

$220 AUD in 15 dage
(28 bedømmelser)
5.3
reallifetech

See details in MB.

$220 AUD in 8 dage
(17 bedømmelser)
4.5
eldemokraty

hi , please check your PMB thanks

$250 AUD in 7 dage
(3 bedømmelser)
3.1
raajav

please see PM

$150 AUD in 5 dage
(1 bedømmelse)
1.8
skilledengineer3

I shall design circuit for you. -George

$97 AUD in 29 dage
(1 bedømmelse)
1.4
pbdavis73

Hi. I can do this. Please see PM.

$200 AUD in 7 dage
(0 bedømmelser)
0.0
EmbedSol

please see PM

$100 AUD in 20 dage
(0 bedømmelser)
0.0