[sdiy] Simple clip detect LED circuit

[harry bissell]

Why not look for the all-ones or all zeros condition of the A/D and 
trigger on that ???

Of alternately... just use a window comparator directly from the audio 
and trigger a one shot ?

H^) harry


eb Francis wrote:
> It's to detect clipping on the input of a ADC, so LED needs to be 
> totally off for below threshold signals, then on for a noticeable 
> amount of time if the signal exceeds the threshold for even 1 sample 
> (~20us).
>
> I guess I'll make up a circuit .. it just would have been nice to 
> check myself against something someone has already tested.  I've 
> googled around for quite a while and (surprisingly) haven't found 
> anything.
>
> Seb
>
>
> Paul Perry wrote:
>> couldn't you just take the audio signal & amp it & drive
>> a led directly via a resistor?
>> You could just rely on your eye to do the smoothing.
>>
>> paul perry melbourne australia
>>
>> ----- Original Message ----- From: "Seb Francis"
>>  
>>> I'm looking for a simple clip detect LED circuit.  I have in my mind
>>> something like rectified audio signal into opamp/comparator, 
>>> compared to
>>> threshold voltage, driving LED & peak-hold capacitor via a diode.  Just
>>> thought I'd see if there's a ready made circuit out there to compare 
>>> to..?
>>>     
>>
>>
>>
>>   
>
>
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