I know noting=85 so I am asking=85
Wouldn=92t the ballistics vary depending on the characteristics of the mete=
r?  Mass of the needle and moving coil ?  Spring return ?  So how would you=
 choose what a simulation looked like ?
Gus in Denver


On 2014m08d11, at 10:46, jim@jpes.com wrote:


It has to do with the meter movement, in particular the damping and
integration time of the movement.


Regards,

Jim

> -------- Original Message --------
> Subject: Re: [PIC] RE: VU Meter
> From: David C Brown <dcb.home@gmail.com>
> Date: Mon, August 11, 2014 10:54 am
> To: "Microcontroller discussion list - Public." <piclist@mit.edu>
>=20
>=20
> What is meant by "ballistics" in this context
>=20
>=20
> On 11 August 2014 15:26, Vasile Surducan <piclist9@gmail.com> wrote:
>=20
>> A while ago I've did a toy acting as a simple VU-meter with a PIC16F628
>> using the internal comparator and it's reference. The paper is published=
 in
>> a magazine, unfortunately in Romanian language, useless for you.
>>=20
>> If you need only the sinusoidal level, then it's easy even without an A2=
D
>> converter.
>>=20
>>=20
>> On Mon, Aug 11, 2014 at 2:48 PM, <alan.b.pearce@stfc.ac.uk> wrote:
>>=20
>>> Added PIC tag ...
>>>=20
>>>> I am interested in designing an LED VU meter based on a PIC for use in
>>>> professional audio. I know there are several designs around on the net
>>> for
>>>> consumer use BUT they all rectify the incoming signal before processin=
g
>>> it in
>>>> the PIC. This limits the ballistics that can be emulated and all of th=
e
>>> examples
>>>> I have come across so far have particularly poor ballistics. For
>>> professional
>>>> use I would want to AtoD the audio and carry out all processing inside
>>> the
>>>> PIC.
>>>> Has this been done already or am I breaking new ground.
>>>>=20
>>>> Any help appreciated.
>>>=20
>>> Are you looking at doing a VU meter or a PPM?
>>>=20
>>> http://en.wikipedia.org/wiki/Peak_programme_meter
>>>=20
>>> many of the LED VU meters seem to combine the two functions by having a
>>> single bar showing the peak while the level dances around under it. The
>> bar
>>> showing the peak is then controlled in the manner of a PPM.
>>>=20
>>>=20
>>> --
>>> Scanned by iCritical.
>>>=20
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>>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
>>> View/change your membership options at
>>> http://mailman.mit.edu/mailman/listinfo/piclist
>>>=20
>> --
>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
>> View/change your membership options at
>> http://mailman.mit.edu/mailman/listinfo/piclist
>>=20
>=20
>=20
>=20
> --=20
> __________________________________________
> David C Brown
> 43 Bings Road
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> SK23 7ND          web: www.bings-knowle.co.uk/dcb
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