Noise Shaping for high rez files and streams
 

On Thu, 23 Feb 2017 15:32:12 +0000 (GMT), "Dave Plowman (News)"
wrote:

In article ,
Don Pearce wrote:
I went for PCB Train (Newbury Electronics) on a recommendation after being
told they were very helpful to a newbie. And so they were. I'm not using a
pukka PCB prog to produce the gerber files, so needed a little guidance.
Now I've got just what those are a bit clearer in my mind, I could
probably use a cheaper alternative. I went for the cheaper 4 week
turnround as there's no rush for them. So they should arrive next week.

I use all free software for this. LTSpice creates the schematic and
simulates it, and it creates a netlist. Then Freepcb reads the netlist
and lets you create the artwork really easily. It generates the
Gerbers in exactly the format that dirtypcbs want. But you are
probably right to use PCBtrain - dirtypcb offer no help.

Basically I've got lots and lots of drawings of PCBs on file. All done for
the standard photo process you can use at home. Not involved multi-layer
surface mount stuff. So needed to know what was required for gerber, so I
could convert them. (My CAD prog will load them, and produce gerber from
them. But you do need to make sure things in the original files translate
OK, and modify if needed) It's been quite fun learning.

It's only a hobby, and I enjoy doing (fairly simple) layouts etc by hand.
Obviously if doing the sort of things you do, I'd have to learn up the
standard software for that.

True, but both those programmes are incredibly easy to learn.

d

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Noise Shaping for high rez files and streams
 

I wonder, is there anyone these days who builds their
own equipment?. Back in the day, I knew dozens of
people who built turntable plinths, speaker cabinets,
valve amps, preamps, and transistor preamps in tobacco
tins.

I guess it depends on your definition of "build". My last
two projects have been putting together active amplification
and crossover for my venerable old Linn Isobariks from hypex
class D amp modules and a programmable digital signal processor,
and "modernizing" an old 1960's Philips tube radio with a
Raspberry Pi, DAC and amps hidden inside to allow streaming
of music from the net. The tricky part has been the careful
tuning of light dimming algorithms to make LEDs simulate
tubes warming up... :)

Noise Shaping for high rez files and streams
 

When I was a nipper, my brother had an MGA.
On Sunday morning, he and Dad used to "balance the carbs"
with a pair of rubber tubes, one in each ear. Then a spot
of oil in each dashpot, and off they went.

Some of us still do (no, not every Sunday, but...)

Noise Shaping for high rez files and streams
 

In article ,
Johan Helsingius wrote:
I wonder, is there anyone these days who builds their
own equipment?. Back in the day, I knew dozens of
people who built turntable plinths, speaker cabinets,
valve amps, preamps, and transistor preamps in tobacco
tins.

I guess it depends on your definition of "build". My last
two projects have been putting together active amplification
and crossover for my venerable old Linn Isobariks from hypex
class D amp modules and a programmable digital signal processor,
and "modernizing" an old 1960's Philips tube radio with a
Raspberry Pi, DAC and amps hidden inside to allow streaming
of music from the net.

The tricky part has been the careful
tuning of light dimming algorithms to make LEDs simulate
tubes warming up... :)

Respect. ;-)

--
*Husband and cat lost -- reward for cat

Dave Plowman London SW
To e-mail, change noise into sound.

Noise Shaping for high rez files and streams
 

On 24/02/17 11:29, Johan Helsingius wrote:
and "modernizing" an old 1960's Philips tube radio with a
Raspberry Pi, DAC and amps hidden inside to allow streaming
of music from the net. The tricky part has been the careful
tuning of light dimming algorithms to make LEDs simulate
tubes warming up... :)


That's the type of project I like. Heresy, some say ;-)

Got any pictures? Incidentally, this stuff does well on YouTube.

--
Adrian C

Noise Shaping for high rez files and streams
 

On 24-02-17 15:00, Adrian Caspersz wrote:

That's the type of project I like. Heresy, some say ;-)

Thanks - I've tried to minimize the heresy by keeping the
old circuitry intact as much as possible, and ensuring
all changes can be undone (basically reconnecting leads
to speakers, switches and potentiometer.

Got any pictures? Incidentally, this stuff does well on YouTube.

I keep intending to take pics, but always run out of round tuits.
I'm not a YouTube person, but the power-up might be worth it... :)

Noise Shaping for high rez files and streams
 

"Johan Helsingius" wrote in message
...
I wonder, is there anyone these days who builds their
own equipment?. Back in the day, I knew dozens of
people who built turntable plinths, speaker cabinets,
valve amps, preamps, and transistor preamps in tobacco
tins.

I guess it depends on your definition of "build". My last
two projects have been putting together active amplification
and crossover for my venerable old Linn Isobariks from hypex
class D amp modules and a programmable digital signal processor,
and "modernizing" an old 1960's Philips tube radio with a
Raspberry Pi, DAC and amps hidden inside to allow streaming
of music from the net. The tricky part has been the careful
tuning of light dimming algorithms to make LEDs simulate
tubes warming up... :)

Like this?
http://www.kolumbus.fi/Iain.Churches...em/C50_010.jpg


Iain

Noise Shaping for high rez files and streams
 

http://www.kolumbus.fi/Iain.Churches...em/C50_010.jpg

Ooh! Nice!

Noise Shaping for high rez files and streams
 

Once upon a time on usenet Iain Churches wrote:
"Bill Taylor" wrote in message
...
On Wed, 22 Feb 2017 10:05:14 +0200, "Iain Churches"
wrote:


"tony sayer" wrote in message

Been dead now some time,
Five years.

lovely bloke and his wife Swimm was she
called?..

An acronym:-)

SWMBO

She who must be obeyed

from Rider Haggard via John Mortimer.

In this case it was definately
SWIMM

She Who Is Magnificently Musical.
--
Shaun.

"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)

Noise Shaping for high rez files and streams
 

"~misfit~" wrote in message
...
Once upon a time on usenet Iain Churches wrote:
"Bill Taylor" wrote in message
...
On Wed, 22 Feb 2017 10:05:14 +0200, "Iain Churches"
wrote:


"tony sayer" wrote in message

Been dead now some time,
Five years.

lovely bloke and his wife Swimm was she
called?..

An acronym:-)

SWMBO

She who must be obeyed

from Rider Haggard via John Mortimer.

In this case it was definately
SWIMM

She Who Is Magnificently Musical.

Absolutely correct:-)
The lady is a very gifted clarinet and
alto saxophone player.

Iain