AVR-Chat

So what? he doesnt want to do spectral analysis, he wants the fundamental, which is the time between zero crossings. If you know 'about' the freq to expect, you can amplify and low pass the string to get rid of a lot of the harmonics. I always help the guitar tuner out by turning down the tone control to get rid of the highs so the tuner can find the fundamental easier. Seems to help somewhat. 
 
-----Original Message-----
From: harrabylad@yahoo.co.uk
To: AVR-Chat@yahoogroups.com
Sent: Mon, 2 Apr 2007 2:09 PM
Subject: Re: [AVR-Chat] Frequency meter


The signal from a guitar is rarely sinusoidal.


----- Original Message ----
From: "BobGardner@aol.com" <BobGardner@aol.com>
To: AVR-Chat@yahoogroups.com
Sent: Monday, 2 April, 2007 6:59:20 PM
Subject: Re: [AVR-Chat] Frequency meter









  


    
            There is a guitar tuner project at avrfreaks... in general, you 
apply the signal to be measured to the analog comparator, count clocks between 
edges using input capture. 

 

-----Original Message-----

From: microbrix@gmail. com

To: AVR-Chat@yahoogroup s.com

Sent: Mon, 2 Apr 2007 1:35 PM

Subject: Re: [AVR-Chat] Frequency meter



On 4/2/07, negink63 <negink63@yahoo. com> wrote:

>

> Hi

> I want to make a tuner an I do not know how I can measure the frequncy

> of an analog signal with AVR. I will be really appriciated If somebody

> could help me.



Tune a Radio, Tune a guitar,  Tuna Piano, Tuna Fish?



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