Re: Techno Dance Itch

2002-12-05 Thread Reggie Bautista
Trent Shipley wrote:


Yeah.  Well that's not quite _it_.

The crucial feature is being able to *group* the receiver appliances into 
groups.

Russell Chapman replied:

I *think* that's what these systems do. Some hear only the backing track 
(ie the filler stuff not being played by anyone on stage), some hear the 
music in total, and some only hear the stage manager's instructions, but 
who hears what can be switched from the backstage console.

I imagine that your dance floor proposal could be done much cheaper than 
these things, and would require less expertise to operate. Perhaps IR could 
be utilised, with ceiling mounted transmitters. IR receiving headphones are 
very cheap in department stores.

Having done a little recording studio and live audio work...

Yes, it's certainly possible to have multiple separate monitor mixes (mixes 
for the headphones or earphones or monitor speakers used by each performer). 
 If there are only one or two separate monitor mixes, the person doing the 
main audience mix might also handle the monitor mix.  Sometimes there are 
separate mixes for each person, and usually that means three or four 
different mixing boards, often located backstage, each manned by a different 
mixer.  I was backstage at a Neville Brothers concert (part of a big 
weekend-long outdoor festival here in KC a few years ago), and I saw no less 
than 5 backstage monitor mixers and two people manning the main audience 
mixing board, and two or three other people setting up mixing boards to be 
used for monitors for the next group.  That's the most mixing boards I've 
ever seen in the same place outside of a music store.

But Trent, for what you're talking about, it's as simple as having low-power 
transmitters on different radio frequencies and headphones that can be tuned 
to those frequencies.

Schools have been doing something similar (only in a wired version) for a 
number of years with keyboard labs.  Each student sits at an electronic 
keyboard with headphones on, and the teacher is able to listen to each 
individual student.  In some systems, the teacher can group two to four 
students who are working on duets or trios or who are each playing a 
separate part of a four-part chorale so that all students in a given group 
hear the keyboards of all the other students in that same group, but no one 
else hears them and they hear no one else.  Many of these systems also have 
microphones built into the headsets so the teacher and student can 
communicate to each other without either one having to get up from their 
desk.  I think I've seen the mixers and headsets sold separately from the 
keyboards.

My wife and I are going to a music education conference in late January 
where they might have some things like that set up in the vendor area.  I'll 
see if there are any wireless systems currently available and sold without 
keyboards and let you know.  You might want to send me a reminder email 
around January 20 or 21.  I think the conference is that following weekend.

Reggie Bautista


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Re: [azipa] Techno Dance Itch

2002-12-05 Thread Bill Nash

Battery powered, multi-channel FM transmitters (Radio Shack, ~$20) Battery
powered portable FM sport radio (yellow) in compact headset style, or
wristband belt clip. (Radio Shack, ~$20).

Going low tech because high tech is overkill: Priceless.

- billn

On Wed, 4 Dec 2002, Trent Shipley wrote:

 Last week, being then employed and interested in social activity and exercise,
 I took a free dance lesson from an acquaintance.

 The main thing I learned was that music is a scarce and precious commodity in
 a dance studio.  You can only put one, or at most two, sets of music over the
 loud speaker systems.  Personal systems are *too* personal.  A couple cannot
 coordinate walkmen or even mp3 players.

 WANTED: a wireless audio system for very local broadcasting -- to be used in
 dance studios and dance departments.  (Ideally, somebody already makes this.
 If not, have Motorola give me a call.)

 TARGET MARKETS:
 Dance studios and dance departments or schools. Gymnastics coaches.  Figure
 skaters and coaches.  Personal or small-group trainers who teach rythm
 aerobics.  Other markets for mini-cast audio.


 COMPONENTS:

 Information Appliances (2):

 Personal headset unit with compact receiver and powersource.

 Compact remote control unit.



 Base unit (3 sub-components)

 To be housed on PC, eventual migration to central info-appliance possible.
 Wireless LAN.
 Broadcaster software.

 ==

 RECIEVER UNIT (RU):

 Low bulk, low weight.  Useable by serious amatuer and professional dancers,
 gymnists, aerobicizers, and otherwise friendly to atheletes and interpretive
 artists who need access to audio mini-cast to a small group.   Note that when
 I discussed this with my dancer friend she immediately thought it would be
 good for personal use.  Thus, a version of the reciever appliance will be
 able to store audio in non-volitile memory.  It will include the basic
 command functions listed below.  (That is, in addition to participating as a
 reciever in a LAN mini-cast, some models of reciever unit *must* act exactly
 like current Mp3 players.)

 Reciver units shall have unique serial numbers (eg. MAC addresses) that can be
 aliased by the broadcaster software.  SNs will be used to assign reciever
 appliances to broadcast groups.

 *THE* reason for the mini-cast system is to provide synchronized music to
 small groups in areas with high audio congestion.  Therefore, users must be
 able to configure RUs into mini-cast reception groups.  All recivers in a
 mini-cast group will get the same audio broadcast.  Therefore, system
 implementers will be *very* cautious about using cached data when as RU is a
 member of a reception group that contains any other RUs as members.

 An RU cannot be restricted by line-of-sight.



 COMPACT REMOTE CONTROL UNIT (CRCU):

 Used by coaches and instructors, the remote control units will provide basic
 music control functions such as select song, make bookmark, goto
 bookmark, pause, stop, fast forward, reverse, and--never to be
 forgotten--play.  The designer will *NOT* put excess function into the CRCU.
 Each button shall have one, and *ONLY* one function.

 The RU and CRCU may be integrated into a single assembly.
 It is marginally desirable that a palm-top augmented with appropriate software
 and hardware be able te emulate a CRCU.

 A CRCU cannot be restricted by line-of-sight.


 BASE UNIT (XMITer):

 Early versions of the base unit will be implemented from an Intel or Apple
 computer using mircrowave or RF wireless LAN (eg wireless ethernet).
 Line-of-sight technologies are inappropriate for this application.  The
 wireless LAN must have sufficient bandwidth to support seamless, high quality
 broadcast of at least 5 simultaneous audio programs.

 The ability to add wireless LANs on slightly different frequencies, thereby
 expanding the system, is moderately desirable.

 Software will be included to manage the system (the App).

 The Application Administrator will be able to control storage and access to
 copywritten material, user access, where data is stored, and so on.
 Approprate interfaces will be provided to the App Admin.  A critical job for
 the App Admin will be naming RU and CRCU appliances.  *NOTE* that the App
 Admin is likely to be one or several small business owners with limited legal
 or computer expertise.

 Power users (coaches, instructors, and so on) will be designated by the app
 admin.  They will need to manage their own music, access studio owned music,
 assemble programming for a given class, and so on.  Most importantly, power
 users will need to define a group of RUs that will receive a mini-cast.  They
 will also need to designate the CRCU that will control the mini-cast.

 The only domain expert consulted thus far seemed very interested in a personal
 RU with storage capablity.  While the intital prototype may require aliasing
 a fixed set of RUs and CRCUs, the system will be designed to add and drop RU
 and CRCU 

Re: [azipa] Techno Dance Itch

2002-12-05 Thread Reggie Bautista
Bill Nash wrote:


Battery powered, multi-channel FM transmitters (Radio Shack, ~$20) Battery
powered portable FM sport radio (yellow) in compact headset style, or
wristband belt clip. (Radio Shack, ~$20).

Going low tech because high tech is overkill: Priceless.


DOH!  Why didn't I think of this!  I've done sound
designs for a community theater group called Wyandotte
Players, and they use a Radio Shack short-range FM
transmitter and small radios for hearing assistance for
those in the audience who don't hear very well.

The advantage of the other system I posted about is
the talkback channel, but if you don't need that...

Reggie Bautista


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Techno Dance Itch

2002-12-04 Thread Trent Shipley
Last week, being then employed and interested in social activity and exercise, 
I took a free dance lesson from an acquaintance.

The main thing I learned was that music is a scarce and precious commodity in 
a dance studio.  You can only put one, or at most two, sets of music over the 
loud speaker systems.  Personal systems are *too* personal.  A couple cannot 
coordinate walkmen or even mp3 players.

WANTED: a wireless audio system for very local broadcasting -- to be used in 
dance studios and dance departments.  (Ideally, somebody already makes this.  
If not, have Motorola give me a call.)

TARGET MARKETS:
Dance studios and dance departments or schools. Gymnastics coaches.  Figure 
skaters and coaches.  Personal or small-group trainers who teach rythm 
aerobics.  Other markets for mini-cast audio.


COMPONENTS:

Information Appliances (2):

Personal headset unit with compact receiver and powersource.

Compact remote control unit.



Base unit (3 sub-components)

To be housed on PC, eventual migration to central info-appliance possible.
Wireless LAN.
Broadcaster software.

==

RECIEVER UNIT (RU):   

Low bulk, low weight.  Useable by serious amatuer and professional dancers, 
gymnists, aerobicizers, and otherwise friendly to atheletes and interpretive 
artists who need access to audio mini-cast to a small group.   Note that when 
I discussed this with my dancer friend she immediately thought it would be 
good for personal use.  Thus, a version of the reciever appliance will be 
able to store audio in non-volitile memory.  It will include the basic 
command functions listed below.  (That is, in addition to participating as a 
reciever in a LAN mini-cast, some models of reciever unit *must* act exactly 
like current Mp3 players.)

Reciver units shall have unique serial numbers (eg. MAC addresses) that can be 
aliased by the broadcaster software.  SNs will be used to assign reciever 
appliances to broadcast groups.

*THE* reason for the mini-cast system is to provide synchronized music to 
small groups in areas with high audio congestion.  Therefore, users must be 
able to configure RUs into mini-cast reception groups.  All recivers in a 
mini-cast group will get the same audio broadcast.  Therefore, system 
implementers will be *very* cautious about using cached data when as RU is a 
member of a reception group that contains any other RUs as members.

An RU cannot be restricted by line-of-sight.



COMPACT REMOTE CONTROL UNIT (CRCU):

Used by coaches and instructors, the remote control units will provide basic 
music control functions such as select song, make bookmark, goto 
bookmark, pause, stop, fast forward, reverse, and--never to be 
forgotten--play.  The designer will *NOT* put excess function into the CRCU. 
Each button shall have one, and *ONLY* one function.

The RU and CRCU may be integrated into a single assembly.
It is marginally desirable that a palm-top augmented with appropriate software 
and hardware be able te emulate a CRCU.

A CRCU cannot be restricted by line-of-sight.


BASE UNIT (XMITer):

Early versions of the base unit will be implemented from an Intel or Apple 
computer using mircrowave or RF wireless LAN (eg wireless ethernet).  
Line-of-sight technologies are inappropriate for this application.  The 
wireless LAN must have sufficient bandwidth to support seamless, high quality 
broadcast of at least 5 simultaneous audio programs.

The ability to add wireless LANs on slightly different frequencies, thereby 
expanding the system, is moderately desirable. 

Software will be included to manage the system (the App).

The Application Administrator will be able to control storage and access to 
copywritten material, user access, where data is stored, and so on.
Approprate interfaces will be provided to the App Admin.  A critical job for 
the App Admin will be naming RU and CRCU appliances.  *NOTE* that the App 
Admin is likely to be one or several small business owners with limited legal 
or computer expertise.  

Power users (coaches, instructors, and so on) will be designated by the app 
admin.  They will need to manage their own music, access studio owned music, 
assemble programming for a given class, and so on.  Most importantly, power 
users will need to define a group of RUs that will receive a mini-cast.  They 
will also need to designate the CRCU that will control the mini-cast.

The only domain expert consulted thus far seemed very interested in a personal 
RU with storage capablity.  While the intital prototype may require aliasing 
a fixed set of RUs and CRCUs, the system will be designed to add and drop RU 
and CRCU appliances _ad hoc_.  Adding new RU-CRCU appliances and designating 
a group should be fast--taking under five minutes for initial production 
versions of the system.
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Re: Techno Dance Itch

2002-12-04 Thread Trent Shipley
Yeah.  Well that's not quite _it_.

The crucial feature is being able to *group* the receiver appliances into 
groups.

What I observed was a single large dance floor.  A divider effectively 
separated the floor into two rooms.  For better or worse neither room was 
acoustically isolated.  Each room had its own music played through 
loud-speakers.  Room one had a class--that is one teacher with many students.  
Room two had a championship couple and their coach and three private 
instructors, each with a student.

Music was played at a moderate volume because students and teachers needed to 
talk.  Furthermore, other business needs might require verbal communication.

In short, they had a maximum supply of two audio channels for music, they had 
demand for five channels of music.  Furthermore, each coach or instructor 
needed to control the music so they and their student(s) got a synchronized 
musical program.  


Proposed

Class in room one:
1 -- Audio 1: Loudspeaker
1.1
1.2
...
1.n

Sessions in room two (currently all listen to the same music):
2a -- Audio 2: mini-cast
2a.1
2a.2

2b -- Audio 3:mini-cast
2b.1 

2c -- Audio 4:mini-cast
2c.1 

2d -- Audio 5:mini-cast
2d.1 

Plus my friend _might_ want to practice by herself, but at the studio, and 
using her mini-cast receiver.

2e -- Audio 6:mini-cast OR audio stored in reciver unit.






On Wednesday 04 December 2002 11:37 pm, Russell Chapman wrote:
 Trent Shipley wrote:
 WANTED: a wireless audio system for very local broadcasting -- to be used
  in dance studios and dance departments.  (Ideally, somebody already makes
  this. If not, have Motorola give me a call.)

 U - ever watched a band in concert recently? It is quite common for
 the band members, roadies and sound and lighting techs to all have an
 interconnected set of short range wireless headphones, some with mikes
 and some without.

 Well, it is here, anyway

 Cheers
 Russell C.


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Re: Techno Dance Itch

2002-12-04 Thread Russell Chapman
Trent Shipley wrote:


Yeah.  Well that's not quite _it_.

The crucial feature is being able to *group* the receiver appliances into 
groups.

I *think* that's what these systems do. Some hear only the backing track 
(ie the filler stuff not being played by anyone on stage), some hear the 
music in total, and some only hear the stage manager's instructions, but 
who hears what can be switched from the backstage console.

I imagine that your dance floor proposal could be done much cheaper than 
these things, and would require less expertise to operate. Perhaps IR 
could be utilised, with ceiling mounted transmitters. IR receiving 
headphones are very cheap in department stores.

Cheers
Russell C.


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