Theo Verelst Local Diary Page 64
I've ditched the usual header for the
moment, I think it doesn't help much anyhow.
This page is copyrighted by me, and may be read and transfered by any
means only as a whole and including the references to me. I
guess thats normal, the writer can chose that of course, maybe
I´ll make some creative commons stuff one day, of course I have
made Free and Open Source software and even hardware designs available!
page is under contruction, so check back later, too.
Of course you don't NEED to use an full HD screen to view this page,
but it sure helps...
A scene from Dirty Harry, in The
Enforcer, from a officially rented Blu-ray disc.
More Film setup
Ice on Vimeo
This is like music from when I grew up from dutch orgin:
The Cats, Sure, He´s a
Dance , One
Al Steward Year of the cat
On another plane:
Earth & Fire - Weekend
A little fun with translatiom froom a electronics magazine article, the
magazine is now exported to the US too, I heared:
|Translated with Yahoo Babel Fish
A geliefd construction object for microcontroller
fans are a radio bell. In such a bell is
recipient with coordinated ferrietantenne
built in, who the indicator of
the reference tijdzender DCF77 in Mainflingen
(d) receive. The received indicators
be possible by the microcontroller become
processes and reflected on a posting.
The reception quality of commercial
DCF77-printjes is proportional with the price.
But under very bad circumstances
to leave even the best recipients knowing.
A small selective preamplifier
outcome frequently offers in such a case.
The original ferrietantenne of the DCFontvangertje
are separately soldered of
recipient and connected on the entrance
of this preamplifier. The entrance has equipped
with source-volger (T1), so that
the coordinated ring hardly subdued
becomes. A bipolar transistor (T2) takes
the strengthening (approximately 5 dB) at its expense.
The termination indicator becomes by means of
transformer ingekoppeld on the original
entrance of the recipient.
secondary winding of these transfor
mator form with C4 and C5 coordinated
ring which on the draaggolffrequentie
afgeregeld must become.
For the afregelen oscilloscoop
necessary. It is also terrible skilful to having
concerning a function generator which
sinusvormig indicator of 77.5 kHz can provide.
The indicator becomes with an amplitude
offered of some millivolts on
original antenna entrance. The oscilloscoop
become parallel to coordinated
ring (C4 and C5) connected. With C5 becomes
now afgeregeld on maximum amplitude.
The transformer must be this way chosen
that it is possible to the correct frequency
gear. In the prototype a core
was used FT50-77 of Amidon, on which two
time 57 convolutions was introduced.
It is use also possible of
a reel core with uitdraaibare a core.
Then the ring can be coordinated with that
and the trimmer is not necessary.
|Original from Elektuur magazine
Een geliefd bouwobject voor microcontroller-
fans is een radioklok. In zo’n klok is een kleine
ontvanger met afgestemde ferrietantenne
ingebouwd, die het signaal van
de referentie-tijdzender DCF77 in Mainflingen
(D) ontvangt. De ontvangen signalen
kunnen door de microcontroller worden
verwerkt en weergegeven op een display.
De ontvangstkwaliteit van commerciële
DCF77-printjes is evenredig met de prijs.
Maar onder erg slechte omstandigheden
laten zelfs de beste ontvangers het afweten.
Een kleine selectieve voorversterker
biedt in zo’n geval vaak uitkomst.
De originele ferrietantenne van het DCFontvangertje
wordt los gesoldeerd van de
ontvanger en aangesloten op de ingang
van deze voorversterker. De ingang is uitgerust
met een source-volger (T1), zodat
de afgestemde kring nauwelijks gedempt
wordt. Een bipolaire transistor (T2) neemt
de versterking (circa 5 dB) voor zijn rekening.
Het uitgangssignaal wordt via een
transformator ingekoppeld op de oorspronkelijke
ingang van de ontvanger. De
secundaire wikkeling van deze transfor-
mator vormt met C4 en C5 weer een afgestemde
kring die op de draaggolffrequentie
moet worden afgeregeld.
Voor het afregelen is een oscilloscoop
nodig. Het is ook erg handig om te beschik-
ken over een functiegenerator die een
sinusvormig signaal van 77,5 kHz kan leveren.
Het signaal wordt met een amplitude
van enkele millivolts aangeboden op de
oorspronkelijke antenne-ingang. De oscilloscoop
wordt parallel aan de afgestemde
kring (C4 en C5) aangesloten. Met C5 wordt
nu afgeregeld op maximale amplitude.
De transformator moet zo gekozen worden
dat het mogelijk is om op de juiste frequentie
in te stellen. In het prototype werd een kern
FT50-77 van Amidon gebruikt, waarop twee
maal 57 windingen werden aangebracht.
Het is ook mogelijk gebruik te maken van
een spoelkern met een uitdraaibare kern.
Dan kan de kring daarmee afgestemd worden
en is de trimmer niet nodig.
|Translated with Google Translate
A popular item for building micro -
fans is a clock radio. In such a small clock
recipient concerted ferry operator enne
built by the signal
the reference time transmitter DCF77 in Mainflingen
(D) receives. The signals received
the microcontroller can be
processed and displayed on a monitor.
The reception quality of commercial
DCF77-prints is proportional to the price.
But under very poor conditions
even the best receivers failed.
A small pre-selective
offers often result in such a case.
The original ferry operator of the DCFontvangertje enne
is independent of the soldered
receiver and connected to the input
of this preamplifier. The entrance is equipped
a source follower (T1), so
the concerted circle barely muted
is. A bipolar transistor (T2) is
strengthening (about 5 dB) on his behalf.
The output is through a
transformer ingekoppeld to the original
from the receiver. The
secondary winding of the trans -
mator with C4 and C5 is a concerted
group on the carrier frequency
should be adjusted.
The setting is an oscilloscope
necessary. It is also very useful to decision -
know about a function generator that
sinusoidal signal of 77.5 kHz can make.
The signal with an amplitude
of a few milliseconds offered on the Volt
original antenna input. The oscilloscope
is parallel to the concerted
circuit (C4 and C5) connected. With C5 is
now tuned to maximum amplitude.
The transformer should be chosen
that it is possible to the correct frequency
it. The prototype was a key
Amidon FT50-77, to which two
windings were made 57 times.
It is also possible to use
a coil core with a print equivalent core.
Then the circle so closely
and the trimmer is not necessary.
It's a part from an article about a DCF receiver one of those radio
transmitters of very klow frequency which are received by clocks over
large areas to be exactly synchronized with some accurate cesium
Fun how that idea is made into radio-bell or clock-radio.
More Class Music
Jeff Wayne - War of the worlds
(Live) (Eve of the war)
Joni Mitchell-California (BBC)
Roger Whitaker, I Don't Believe In
Glen Miller, Moonlight Serenade
Duke Ellington - Take the A Train
I wanted some close harmony examples, and this came up:
chordettes, Moonlight Bay, Lollypop
The Four Freshmen, I
Left My Heart In San Francisco
Singing guitar, almost:
Peter Frampton, show me the way
Bonavita, Show me
the way to go home - flamenco style
I wanted to find a in a
particular way sinful version of this song, but couldn't find what I
was looking for:
Gladys Knight & The Pips
- Just A Closer
Walk With Thee
Tennesee Ernie Ford - Just A Closer Walk
Tennessee Ernie Ford - Take
My Hand, Precious Lord
Elvis Presley - Take
my hand precious lord
Jazz Folks - Just A Closer Walk
With Thee (This harp
version is good too)
I guess I looked for some barbershop record I remember, but this
is a fine example
The Mills Brothers - Sing Barbershop
For a lot of people that turned more into:
Aretha Franklin - Chain of Fools.
Ever seen excellent live playing? Check this out:
The Commodores: Machine Gun
There are people slaving away in studios for years, with equipment that
didn't even exist yet in 1974 who after half a lifetime can't even get
one SOUND of ONE instrument 1/10th as good as these guys can do live
Believe me I know, I used to be one of them! Well, I didn't slave away
but I sure spend 100s of hours in a home studio halfway the 80s with
more than a few synthesizers and such and I would have to work hard and
practice almost a decade for hours a day to get some sounds and some
musical elements of this sort of class, really. In the now if I try
hard I probably could do a rendering of such songs on a Yamaha S90 or
another good synth, or one of the originals from the time, which would
even work and partially even live. Don't believe me ? You might regret
that one day! Talking about me there have been people to witness such
actions. But these guys I had the privilege of hearing as a young kid
already, so I could grow up with great music, and no need to learn pooh
or evil (and sh*). And after having heard such music often and long,
and studying musical elements and playing long it is much easier to try
for instance a cover of a song than it is to COME UP with the (or
another!) original !!!!!
did a song by that title, too, but of a totally different nature.
To conclude for now, a pivotal song by Al Jarreau, one of the great
artists of the world, which used to be the title song for a TV series
of the same name:
Al Jarreau - Moonlighting
Some walk by night,
Some fly by day,
Nothing could change you,
Set and sure of the way.
Charming and bright
Laughing and gay
I'm just a stranger,
Love the blues and the praise
There is the sun and moon,
They sing their own sweet tune,
Watch them when dawn is due,
Sharing one space.
Some walk by night,
Some fly by day,
Something is sweeter,
When you meet 'long the way
Come walk the night
Come fly by day
Something is sweeter,
Cause we met 'long the way
We'll walk by night,
We'll fly by day,
Who just met on the way.
That was a joy to hear, especially in that time.
What's 1080-24p ?
Uehm that's an attempt on Bluray materials (or other media for high
definition video of 1080x1920 pixels, or 1920 wide and less vertical
pixels or black upper and lower bands to accomodate for the higher
movie aspect ratio than 16:9) to recreate the frame rate of most
original motion pictures: 24 frames per second.
Does that work? Well, uehm, yeah but it depends. First of all, you need
the material preferably to be *recorded* on the bluray disc in 24
frames per second, and second of course you need a TV, monitor or
projector which can handle that framerate, and handle it good.
Then it works? Yeah, but I think most blurays are (in Europe) recorded
in 60 fps, which kind of sucks, but then it is possible to pretend it
is 24 fps (which probably the original film frames were) and derive the
original frames back from that. Not nice, but it sure works and at
times great. I can use a beamer (Mitsubishi HD 1000 720HD beamer, 1500
lumen, on a 106 inch big pro grade screen) which does handle the
1080-24p signal over HDMI (it reports it as a deviation from 1080-50)
and then films do come to rest and on average look filmish and nice
For real ?!
Yeah, for real, but I don't say it couldn't be improved, but oh yes,
the result is great enough to pass as film, and I've tried that with
more than a few hours or titles, I guess over 20 films (bluray of
course not DVD...) and hundreds of viewing hours.
And on a TV or monitor? Well, I can't play bluray in HD on a 24 frame
capable monitor at the moment, so I don't know. I'm used to a big
notebook where I make my own 1080-50i HD recordings visible, which I at
times convert with fairly good quality (h264 transcoded with q=0) to
1080-25 (no p or i) which is more restful and more slow of course. When
films would be shot with 60 fps, such as some HD TV is, it is of course
swifter than 24 fps, which however is a perceptually determined frame
rate corresponding with the human visual system, and as such can look
very natural when used right, which doesn't happen that great with the
60Hz screen or 60 fps beamer mode. The beamer compensates and
interpolates professionally a lot of motion (I ***dont'*** mean
stabalizes, I mean interpolates and interprets all kinds of signal
data) so that even with 1280x720 actual (but really fast: DLP) pixels
on a 2.3 meters wide screen viewing from 2 to 3 meters away the movies
really come alive, without ever really erring.
On the fast (3 msec) 60 HZ (It can do 50i too) monitor I can't help but
think that the european conversion WOULD BETTER BE QUIT AND FORGOTTEN
AT ALL, FROM THE START. Like really. Forget it. Go home and sell the
american made originals, guys, seriously. Don't bother. Go Mess up
someone else's films. Oh sorry, that's already your job...
I mean I *make* these materials, too, by filming in HD and creating
mathematically accurate graphics from 3D, and my recordings can look
smashing on the screen and the beamer. Which of course takes some work,
depending on the type of scene and motion and desired effect, but
really, to mess the materials up like seems to be rule of blurays is a
rare (and sick) art form, which must require a lot of work, seriously,
I can jack the HDMI of the small handlycam HD recorder straight in the
fast 1080 monitor input, yank in ANY tape I recorded in HD from a least
like 10 hours of material, most with serious motion of all kinds, and *rarely* things look so idiotic.
I mean seriously, somewhere along the chain of processing these great
films in to bluray products somebody or something must try real hard to
not get noticed while messing up real good. Just like the ' allowed'
settings. I could imagine movie companies could be hesitant to sell
movie copies which look really good, and thus prefer the 24, 25, 50 an
60 rates to be used unfitting, to not issue a higher quality than 8
bits (like the pro 10 or 12) per component, and to keep the original
sound tracks and mofo them into some DVD mpeg format for the consumer.
OH NO!! They made great PCM (albeit often only 16 bit), DolbyTrueHD
(thumbs up) and DTS (Wonderful !) surround availble for what is it: a
few tens per 50 Gig disc.
So when we behave a bit nice, buy some, rent legal (I guess that's an
OK way) they did give out for consumer use surely great enough sound
tracks, which I could certainly use for small (home) theater
reproductions. And luckily with potent players and in my case a great
beamer, the films truly do come alive at a very good standard of image
So why all the pixel messing guys, believe in the new age 1984 too
much? I think it isn't right.
While we're at it: 16 bits per component and full 4 k frame would be
yummy too, of course....
Some quick pictures from the screen, impressions from The Enforcer:
I shot this at a Philips AES lecture recently about characterizing
music by computer, well, the terms shift invariant, great Music and
wonderful FFT are not directly related to these activities...
Well it was fun seeing some scales as it appeared automatically
indicating wether the music played would be sad/joyful
aggriesive/friendly an some more dimensions. I wanted to suggest AC/DC
or YellowJackets or Oasis, but someone remarked how about Pink Floyd.
Yeah. On the other hand who cares if some internet radio station can
determine aspects of the mood or certain musical properties of songs, I
don't think I want to altogether ditch the as it is regarded old
fashioned (I don't think so though) Disc Jockey who listens to
promotions and God knows what and by experience can give some good
music pointers and replace him or her by an automated program. What the
heck for? Next thing a radio station would be led by an automated pope
or anything... And the idea of researching a internet radio station is
long past research of course, I enjoyed yahoo radio quite well many
many years ago, and the characterisations classic rock / 70s hits /
fusion and many many more aren't causing me any problems finding much
of what I want: there is soo much of the good music, but putting a few
adequate labels on a song is quite easy for the makers compared to
making the d*mn music! So who cares if my harddisk WITH HOPEFULLY LEGAL
MUSIC can be categorized automatically. Seriously.
"I want 70% happy, 21.05%aggressive and 1.7 percent uptemo music
please!" Yeah right. Anyhow, nothing against research, but these people
get paid serious money, I don't professor them for free.
Anyhow to make me feel good I played the officially bought (Money to
the proper artists! Make me make some money guys!) Black Crows at
The Filmore Bluray at about -6 dB of the Theo Verelst Official
Satisfactory Rock Soundpressure Level, which is like the _Absolute_
_Maximum_ for not seriously trying to disturbe domestic peace and at
half the volume required, that's already a mighty amount of rocking
going on, believe me. All those 10 amplifier channels with over
(probably more than) 600 Watts of actual RMS Sine power and over a
kilowatt (1030 (one thousand thirty) to be precise) of rated
supply power to help the 'music power' aspect and all 13 loudspeakers
and probably about 400 liters of enclosure can rock very loud and deep
in a not totally big space, even when limited to 1/4 of the maximum
normal power limit. HHhhhAaaaaaaa, I feel better.
Oh, of course thanks to the men and women *making* the music: that's a
little detail, too, otherwise what would one do with such a great and
powerful audio system, isn't it. So the crowes went to Rock the
Filmore, once again (2005 I think it was or 6) esteblished themselves
as on of the greatest rock stars of this era, some guys filmed it (in
60 fps HD mostly I think) and made a great DTS audio track, which all
ends up on my 28 inch screen and the TOS input of the Lexicon converter
I use, and the rear systems input, and then the amps hum and the screen
lights up and the sony player blows a little air, and BAM, as if
I'm somewhere else.
Another Upgrade to the System
To make the surround which is for most all current Blu-Ray discs
limited to 5.1, which in fact I could play 7.1 (or better put 7.0 self
filtered to 7.1 because no-on except some pro in a cinema is going to
offer me a sub signal which is low pass filtered at 40 Hz) work nicer
as lets say a quadro system (which I think I'd prefer over the
front-side approach on most Blu-Ray), I let the rear which are actually
almost side speakers work indirect, by reflecting their output over a
(hard concrete wit normal bit soft wallpaper) wall. So I make the
wall at that spot free from damping and as I reported on my precious diary page.
As I said, I'm giving away tips here of course (...), I put the player
in Small Speaker Mode for the side speakers, such that the low
components coming directly from the sides instead of via reflection
would be prevented, becasuse they'd mess up the path length anticipated.
This time I went about tis issue by trying to damp the sounds coming
from the back an side of he enclosure, and also a bit of the sound
coming directly around the corner of the front panel, by using thick
damping panels and pieces of the same.
The result? I think I like it! I need to test a bit more, and work with
the sound path length setting limitation of the player, but setting the
side speaker size back to Large and adjusting the damping materials to
cover most of the unwanted diect sound paths I think the whole sounded
better than ever. From the humming sounds in the Dirty Harry movies to
the audience in concerts and the music scores in various films,
including Clockwork Orange, the indirect sound is nicer and more
adaquate, and also quite less listening place insensitive. Give or take
some things, probably.
And of course because of the longer virtual sound path, the place
sounds a bit bigger by default, too, which is nicer.