Mechanism behind trumpet playing robot?

It sounds synthesized to me. Are you sure "he" is actually playing the horn?
Randy

On Sat, 22 Dec 2007 19:29:20 GMT, Randy Replogle


I had the opposite feeling.  It looks like he (it) is blowing air through
it, and pressing keys on a real horn.  With the polymers available these
days it would be quite easy to make the proper interface to the horn's
mouthpiece (along with the vibrations our lips make when we do it), and
the programming to press the keys/buttons on the horn is trivial.

On Sat, 22 Dec 2007 11:42:31 -0800, ChairmanOfTheBored


Before I even started the video I was saying that I bet the robot was
big enough to contain an actual person.

It was

d

--
Pearce Consulting
http://www.pearce.uk.com

 Not if you examine the joints on his limbs.  There is no way a person
could be in there.

On Sun, 23 Dec 2007 10:55:02 -0800, ChairmanOfTheBored


I did. Plenty of room.

d

--
Pearce Consulting
http://www.pearce.uk.com

  Nope.  The arms are too long, and the "elbows" are too small for any
man that would even come close to having arms that long to fit through.
Also, a person with arms that long would be much taller than that robot
is.  The robot's arms are not proportioned to his body like those of ALL
humans are.

I'm pretty sure he is. I think the "synthness" you're hearing is the
fact that you've never heard a trumpet played without the "flaws"
inherent with the way humans generate tones on a brass instrument. The
articulations, the vibrato.

Could be. Maybe a bad recording too?
Randy

--
Paul Hovnanian    paul@hovnanian.com
-----------------------------------------------------------------------
Procrastinators: The leaders for tomorrow.

 >> http://youtube.com/watch?v=7fYMxaBTqls

I have to agree that the sound seems to be genuine; it is a blown
trumpet. The two and three-finger slur attacks are too, too real.

I have to vote for the synthetic lips.

I was waiting for the robot to wave the other hand while playing!

Angelo Campanella

I don't think so.  The fingering does not match the pattern of notes.

--
 JosephKK
 Gegen dummheit kampfen die Gotter Selbst, vergebens.  
  --Schiller

    --Obliquely of interest: here's a wind-instrument player a friend of
mine made many moons ago: http://www.bmumford.com/art/player.html

--
        "Steamboat Ed" Haas         :  Whatever happened            
        Hacking the Trailing Edge!  :  to Tom Nelson?
                          www.nmpproducts.com
                   ---Decks a-wash in a sea of words---

  There is a big difference between blowing air across an opening, such
as that used in a flute, and blowing reverberated air through a horn's
mouthpiece.

  Both the flute, and woodwind instruments would be far easier to
construct and perform upon than those of the horn section.

  This is Usenet, not email, try to refrain from top posting.

On Sat, 22 Dec 2007 19:29:20 GMT, Randy Replogle


The air doesn't make the sound, the trumpet player's lips have to
vibrate, similar to a reed instrument - the trumpet tunes the
vibrating column of air and couples it, via the horn, to the
environment.  Lips/breath are excitation, length of pipe is the tuned
circuit, horn is the impedance matching element.  

Now getting a robot to do it?  A trumpet player starts the note by
pressurizing the mouth, tensing the lips,  then suddenly removing the
tongue to start the note - similar to spitting material off the tip of
one's tongue.

Without those elements it is bound to sound different even if a robot
is producing the sound by blowing air into the instrument. - the cheap
easy way would be to add a reed to the mouthpiece and that would make
it sound more like an alto sax?  

I do know for a fact that there's a church in NYC that has a few dozen
trumpet - bugle pipes (one for each note) on the pipe organ and it
does sound like a trumpet so there must be an organ maker that knows
how to do it.  Strictly speaking, it wouldn't be a trumpet any more if
it had a reed in it.

Lip tension and pressure will get four notes per valve or combination
of valves - 4 solid notes;  with good players able to hit several
higher notes per valving.  A bugle is basically a four note
instrument, a valve bugle is an eight note instrument.
--

  Bullshit.  They do not need their tongue at all.

It would appear he's describing a common method of initiating a note.

Also, the tongue doesn't just act as a stopper/valve it also changes
the contour of the airstream.  Assuming you play, you'll notice the
higher you play, the more your tongue moves toward the roof of your
mouth.

  If you had any brains, you could tell by the sound that it was a horn
sound, and that there was no reed involved in making the reverberations.

  Why would you make a remark as if fact, then finish it with a question
mark?

On Sun, 23 Dec 2007 11:01:14 -0800, ChairmanOfTheBored


Well idiot, its like this, I played a trumpet, but never a sax.  I
know a trumpet needs the lips as the vibration source, I can only
imagine what a trumpet with a reed would sound like so the question
mark.  Idiot.

I played in a few bands and orchestras and sampled a few instruments.
Clarinet, Bassoon, Saxophone, use reeds.  French horn, Trumpet,
Trombone use lips.  And air . . . and tension to achieve different
notes

While the trumpet only has 4 notes per valve combination it is
possible to "slur" from one to the next, and a good player can make it
seem seamless - but can't stop and hold a note between two normal
notes.  Maybe Winton Marsalis can, but I seriously doubt it.

A clarinet, sax, virtuoso can slur and more easily hit illegal notes
because the valves can open part way - trumpets not so lucky.

And I built a few pipe organs, idiot.  The pipe organ is a flute with
one pipe per note.  There are also reed pipes and are used in pipe
organs (with tunable reeds - but the pipe length and volume determine
the note)  Reeds alone are used in smaller organs - similar to an
accordion or harmonica in design - both reed instruments.

A pipe organ with flute toned pipes uses combinations of pipes to make
different sounds - emulating human voices or other string or wind
instruments (different "stops" or multiple linked valves in the "wind
chest") - but to make a pipe organ that sounds like a reed instrument
you really need a reed at the base of the pipe.

A reed has all the warmth of a electromechanical seatbelt buzzer until
you add the pipe.

ChairmanOfTheBored thou doth be a vicious troll.
--

  Since the robot wasn't playing a sax, I hardly think it has any
relevancy whatsoever.
  I

  Well, dumbfuck, if you had enough brains to read the entire thread, you
would have noticed where someone got a PhD for making a device that
simulates the human lips playing a horn instrument, and that it is quite
possible.

  Oh boy!  An instrument "sampler".  Do you play the skin flute as well?


  That's Wynton Marsalis, idiot.

  But YOU can slur right here in Usenet.


  Oh boy!  A pipe organ builder!


  I don't need a primer, dipshit.

snipped retarded, half witted spew about tuned pipes.


  You're a goddamned retard, boy.

  You're a goddamned idiot as well.