[Jukebox-list] skipping record

[Wesley Dean]

    Ron, Aireion had an optional ALC. The demonstration I was exposed to was in a location and the test juke installed. There was a microphone connected to the juke and placed in a far corner of the room. The theory was if the microphone couldn't hear the music, it would get louder. The salesman played a record and when it started playing, he went to the kitchen and got a large ladle and a big pot  As he walked round the room beating on the pot, the juke got louder and louder. The salesman was smiling and I hollered great. He leaned over to me and asked what I had said. I hollered again louder this time and the juke got louder. He stopped beating on the pot and I stopped hollering.  The system must've got confused because the was still getting louder. It may have been a good idea, but I think it needed some major tweaking.  The way it was supposed to work was music from the juke was supposed to cancel the out of phase music the microphone sent back to the juke  What was not taken in consideration was the phase shift in propagating music across the distance from the juke and mike. Wes    
----- Original Message ----- 
From: "Ron Rich" <ronnnrich at yahoo.com>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Monday, November 20, 2006 3:31 PM
Subject: Re: [Jukebox-list] skipping record


Kyle and all,
  Kye is correct as far as I know. However, Seeburg did develop a "bad groove detector" or something called something like that. It was never offered for jukebox use, as far as I know, but was optional, for use with their background music system. It would detect if a record was repeating a section. This took about three "repeats" of the same passage and it would reject the record. There were a couple of "Hit tunes" that would trigger this every time they were played, as the song had the same 10, or so, seconds repeated in the music.
  We tested the unit, on an LPC-1, in the famous "Mel's Drive In" in San Francisco for many years. It worked well. Also installed it on a couple of other customers jukes.
  Seeburg also had an "Automatic volume level control", for BGM use. This would monitor the level of the background noise, and adjust the music level accordingly. We also tested this for jukebox use at "Mel's" (it was close to our shop). It was a failure, as far as the location was concerned. They claimed that it was not consistent, and would raise the volume too loud, or not enough at times. Ron Rich

"Mechanical Music of S.F." <mechanicalmusic at hotmail.com> wrote:
  Re: auto cancel wire
Cancels the selection if there's no record present, like if you select a 
blank slot.

There's no way for a jukebox to know if a record is skipping.

Kyle ~
Mechanical Music of San Francisco

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