Disklavier

I may be crazy, but it seems like that when I record something on my 
DC3A via the built in recorder it doesn't seem quite as accurate as 
when using SONAR3 (via the MIDI connections to my PC) to record the 
same piece of music.  Anyone else notice this?  I have been 
recording pieces with SONAR3, converting them to MIDI and then 
playing the files on DSK.  For some reason, this seems to work 
better than using the internal recorder and then just playing back.  
Especially for complex piano pieces (ie. lots of notes..)  I could 
be dreaming.... SJ

It would be helpful, for comparison, if one could simultaneously record 
a performance both internally and to SONAR3. You have surely found that 
the DKV will not support that.

To test your hunch then, you might wish to record and reproduce one 
performance internally to a DAT, and record and reproduce another 
performance using SONAR3 to a DAT.  Then, using software such as Sound 
Forge, measure the inaccuracies of the reproduced audio recordings 
resulting from the two methods.

That sounds like a lot of hard work.  I have done the first part 
(internally recorded and reproduced) to compare the differences between 
an original and a reproduced performance of single notes on a Mark II. 
That took weeks of tedious work.

Watch out for subtle biases.  For example, if you feel better about 
recording to SONAR3, perhaps you're are playing better to SONAR3.  In 
that case, the answer is simple: Don't do any testing that would spoil 
that impression; rather, savor it, and continue to record your best 
playing to SONAR3.

Did you record the test piece first internally, and then record to 
SONAR3?  Could you have been more practiced the second time?

Are you auditioning all reproductions from the same place in your music 
room? Are you in a more comfortable chair when listening to SONAR3 
recordings?

When you transfer a SONAR3 recording to diskette, does it degrade?

You're probably not crazy.  It sounds like something interesting is 
going on there.



sjhart110110 wrote:
> I may be crazy, but it seems like that when I record something on my 
> DC3A via the built in recorder it doesn't seem quite as accurate as 
> when using SONAR3 (via the MIDI connections to my PC) to record the 
> same piece of music.  Anyone else notice this?  I have been 
> recording pieces with SONAR3, converting them to MIDI and then 
> playing the files on DSK.  For some reason, this seems to work 
> better than using the internal recorder and then just playing back.  
> Especially for complex piano pieces (ie. lots of notes..)  I could 
> be dreaming.... SJ
> 
> 
> To Post a message to the group, send it to:   disklavier@...
> 
> To Post a private message to Todd Muncy, the group's founder and moderator, send it to:
> disklavier-owner@...
> 
> To reach our group's web site go to:
> http://Yahoogroups.com/group/disklavier
> 
> Todd's family web site was completely updated 012/22/03.  It contains some fun disklavier content and links to midi sites among many other things, The url is:
> http://MuncyFamily.com 
> 
> THINKING OF LEAVING THE GROUP?
> If you are thinking of unsubcribing because you are getting too much mail, go the the web site and change your email delivery option instead.  That will fix the problem, while maintaining your access to the group.  If you insist on leaving us completely send a blank email to:
> disklavier-unsubscribe@... 
> 
> Know someone who wants to join?  Have them send a blank email to:
> disklavier-subscribe@... or give them this link:
> http://Yahoogroups.com/group/disklavier/join 
>  
> 
> Yahoo! Groups Links
> 
> To visit your group on the web, go to:
>  http://groups.yahoo.com/group/disklavier/
> 
> To unsubscribe from this group, send an email to:
>  disklavier-unsubscribe@yahoogroups.com
> 
> Your use of Yahoo! Groups is subject to:
>  http://docs.yahoo.com/info/terms/ 
> 
> 
> 


-- 
Robert Welcyng
Anchorage, Alaska

When looking at the midi events that get generated by the DC3A.  
They are just basic note on, duration, volume, etc.  (since I don't 
have the PRO model).  Seems pretty basic.  I thought that the hammer 
and key sensors would generate some type of special midi data, but I 
guess that they work together to produce the basic note midi data 
during recording.



--- In disklavier@yahoogroups.com, Robert Welcyng <rwelcyng@a...> 
wrote:
> It would be helpful, for comparison, if one could simultaneously 
record 
> a performance both internally and to SONAR3. You have surely found 
that 
> the DKV will not support that.
> 
> To test your hunch then, you might wish to record and reproduce 
one 
> performance internally to a DAT, and record and reproduce another 
> performance using SONAR3 to a DAT.  Then, using software such as 
Sound 
> Forge, measure the inaccuracies of the reproduced audio recordings 
> resulting from the two methods.
> 
> That sounds like a lot of hard work.  I have done the first part 
> (internally recorded and reproduced) to compare the differences 
between 
> an original and a reproduced performance of single notes on a Mark 
II. 
> That took weeks of tedious work.
> 
> Watch out for subtle biases.  For example, if you feel better 
about 
> recording to SONAR3, perhaps you're are playing better to SONAR3.  
In 
> that case, the answer is simple: Don't do any testing that would 
spoil 
> that impression; rather, savor it, and continue to record your 
best 
> playing to SONAR3.
> 
> Did you record the test piece first internally, and then record to 
> SONAR3?  Could you have been more practiced the second time?
> 
> Are you auditioning all reproductions from the same place in your 
music 
> room? Are you in a more comfortable chair when listening to SONAR3 
> recordings?
> 
> When you transfer a SONAR3 recording to diskette, does it degrade?
> 
> You're probably not crazy.  It sounds like something interesting 
is 
> going on there.
> 
> 
> 
> sjhart110110 wrote:
> > I may be crazy, but it seems like that when I record something 
on my 
> > DC3A via the built in recorder it doesn't seem quite as accurate 
as 
> > when using SONAR3 (via the MIDI connections to my PC) to record 
the 
> > same piece of music.  Anyone else notice this?  I have been 
> > recording pieces with SONAR3, converting them to MIDI and then 
> > playing the files on DSK.  For some reason, this seems to work 
> > better than using the internal recorder and then just playing 
back.  
> > Especially for complex piano pieces (ie. lots of notes..)  I 
could 
> > be dreaming.... SJ
> > 
> > 
> > To Post a message to the group, send it to:   disklavier@Y...
> > 
> > To Post a private message to Todd Muncy, the group's founder and 
moderator, send it to:
> > disklavier-owner@Y...
> > 
> > To reach our group's web site go to:
> > http://Yahoogroups.com/group/disklavier
> > 
> > Todd's family web site was completely updated 012/22/03.  It 
contains some fun disklavier content and links to midi sites among 
many other things, The url is:
> > http://MuncyFamily.com 
> > 
> > THINKING OF LEAVING THE GROUP?
> > If you are thinking of unsubcribing because you are getting too 
much mail, go the the web site and change your email delivery option 
instead.  That will fix the problem, while maintaining your access 
to the group.  If you insist on leaving us completely send a blank 
email to:

> > disklavier-unsubscribe@y... 
> > 
> > Know someone who wants to join?  Have them send a blank email to:
> > disklavier-subscribe@e... or give them this link:
> > http://Yahoogroups.com/group/disklavier/join 
> >  
> > 
> > Yahoo! Groups Links
> > 
> > To visit your group on the web, go to:
> >  http://groups.yahoo.com/group/disklavier/
> > 
> > To unsubscribe from this group, send an email to:
> >  disklavier-unsubscribe@yahoogroups.com
> > 
> > Your use of Yahoo! Groups is subject to:
> >  http://docs.yahoo.com/info/terms/ 
> > 
> > 
> > 
> 
> 
> -- 
> Robert Welcyng
> Anchorage, Alaska

Yamaha is wise.  They do not reveal the inner workings of the DKV, nor 
do they supply information on accuracy measurements that they have 
surely made.  Thus they are not distracted by discussions with those of 
us who would volunteer to be their armchair design consultants.

sjhart110110 wrote:
> When looking at the midi events that get generated by the DC3A.  
> They are just basic note on, duration, volume, etc.  (since I don't 
> have the PRO model).  Seems pretty basic.  I thought that the hammer 
> and key sensors would generate some type of special midi data, but I 
> guess that they work together to produce the basic note midi data 
> during recording.
> 
> 
> 
> --- In disklavier@yahoogroups.com, Robert Welcyng <rwelcyng@a...> 
> wrote:
> 
>>It would be helpful, for comparison, if one could simultaneously 
> 
> record 
> 
>>a performance both internally and to SONAR3. You have surely found 
> 
> that 
> 
>>the DKV will not support that.
>>
>>To test your hunch then, you might wish to record and reproduce 
> 
> one 
> 
>>performance internally to a DAT, and record and reproduce another 
>>performance using SONAR3 to a DAT.  Then, using software such as 
> 
> Sound 
> 
>>Forge, measure the inaccuracies of the reproduced audio recordings 
>>resulting from the two methods.
>>
>>That sounds like a lot of hard work.  I have done the first part 
>>(internally recorded and reproduced) to compare the differences 
> 
> between 
> 
>>an original and a reproduced performance of single notes on a Mark 
> 
> II. 
> 
>>That took weeks of tedious work.
>>
>>Watch out for subtle biases.  For example, if you feel better 
> 
> about 
> 
>>recording to SONAR3, perhaps you're are playing better to SONAR3.  
> 
> In 
> 
>>that case, the answer is simple: Don't do any testing that would 
> 
> spoil 
> 
>>that impression; rather, savor it, and continue to record your 
> 
> best 
> 
>>playing to SONAR3.
>>
>>Did you record the test piece first internally, and then record to 
>>SONAR3?  Could you have been more practiced the second time?
>>
>>Are you auditioning all reproductions from the same place in your 
> 
> music 
> 
>>room? Are you in a more comfortable chair when listening to SONAR3 
>>recordings?
>>
>>When you transfer a SONAR3 recording to diskette, does it degrade?
>>
>>You're probably not crazy.  It sounds like something interesting 
> 
> is 
> 
>>going on there.
>>
>>
>>
>>sjhart110110 wrote:
>>
>>>I may be crazy, but it seems like that when I record something 
>>
> on my 
> 
>>>DC3A via the built in recorder it doesn't seem quite as accurate 
>>
> as 
> 
>>>when using SONAR3 (via the MIDI connections to my PC) to record 
>>
> the 
> 
>>>same piece of music.  Anyone else notice this?  I have been 
>>>recording pieces with SONAR3, converting them to MIDI and then 
>>>playing the files on DSK.  For some reason, this seems to work 
>>>better than using the internal recorder and then just playing 
>>
> back.  
> 
>>>Especially for complex piano pieces (ie. lots of notes..)  I 
>>
> could 
> 
>>>be dreaming.... SJ
>>>
>>>
>>>To Post a message to the group, send it to:   disklavier@Y...
>>>
>>>To Post a private message to Todd Muncy, the group's founder and 
>>
> moderator, send it to:
> 
>>>disklavier-owner@Y...
>>>
>>>To reach our group's web site go to:
>>>http://Yahoogroups.com/group/disklavier
>>>
>>>Todd's family web site was completely updated 012/22/03.  It 
>>
> contains some fun disklavier content and links to midi sites among 
> many other things, The url is:
> 
>>>http://MuncyFamily.com 
>>>
>>>THINKING OF LEAVING THE GROUP?
>>>If you are thinking of unsubcribing because you are getting too 
>>
> much mail, go the the web site and change your email delivery option 
> instead.  That will fix the problem, while maintaining your access 
> to the group.  If you insist on leaving us completely send a blank 
> email to:
> 
>>>disklavier-unsubscribe@y... 
>>>
>>>Know someone who wants to join?  Have them send a blank email to:
>>>disklavier-subscribe@e... or give them this link:
>>>http://Yahoogroups.com/group/disklavier/join 
>>> 
>>>
>>>Yahoo! Groups Links
>>>
>>>To visit your group on the web, go to:
>>> http://groups.yahoo.com/group/disklavier/
>>>
>>>To unsubscribe from this group, send an email to:
>>> disklavier-unsubscribe@yahoogroups.com
>>>
>>>Your use of Yahoo! Groups is subject to:
>>> http://docs.yahoo.com/info/terms/ 
>>>
>>>
>>>
>>
>>
>>-- 
>>Robert Welcyng
>>Anchorage, Alaska
> 
> 
> 
> To Post a message to the group, send it to:   disklavier@...
> 
> To Post a private message to Todd Muncy, the group's founder and moderator, send it to:
> disklavier-owner@...
> 
> To reach our group's web site go to:
> http://Yahoogroups.com/group/disklavier
> 
> Todd's family web site was completely updated 012/22/03.  It contains some fun disklavier content and links to midi sites among many other things, The url is:
> http://MuncyFamily.com 
> 
> THINKING OF LEAVING THE GROUP?
> If you are thinking of unsubcribing because you are getting too much mail, go the the web site and change your email delivery option instead.  That will fix the problem, while maintaining your access to the group.  If you insist on leaving us completely send a blank email to:
> disklavier-unsubscribe@... 
> 
> Know someone who wants to join?  Have them send a blank email to:
> disklavier-subscribe@... or give them this link:
> http://Yahoogroups.com/group/disklavier/join 
>  
> 
> Yahoo! Groups Links
> 
> To visit your group on the web, go to:
>  http://groups.yahoo.com/group/disklavier/
> 
> To unsubscribe from this group, send an email to:
>  disklavier-unsubscribe@yahoogroups.com
> 
> Your use of Yahoo! Groups is subject to:
>  http://docs.yahoo.com/info/terms/ 
> 
> 
> 


-- 
Robert Welcyng
Anchorage, Alaska

There are detailed descriptions of the workings of disklaviers in the US
patent office archives. There is quite a comprehensive description of the
silent system in this one :

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-boo$

At the top it cites various other patents, and some of the other
disklavier systems are described in older patents, not all of which are
by Yamaha (not surprisingly)

eg:

http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4351221

which covers the main disklavier action, how the metal flags on the shanks
work, including information on the algorithms used.

Not really an official document I guess, but there might be more
information there that I've missed. There might even be patents on the
Pianosoft Plus Audio spec (unlikely to be listed as such, since I doubt
the marketing people will have been aware of the invention when it was
patented).

Regards,

James

On Sun, 1 Feb 2004, Robert Welcyng wrote:

> Yamaha is wise.  They do not reveal the inner workings of the DKV, nor
> do they supply information on accuracy measurements that they have
> surely made.  Thus they are not distracted by discussions with those of
> us who would volunteer to be their armchair design consultants.
>
> sjhart110110 wrote:
> > When looking at the midi events that get generated by the DC3A.
> > They are just basic note on, duration, volume, etc.  (since I don't
> > have the PRO model).  Seems pretty basic.  I thought that the hammer
> > and key sensors would generate some type of special midi data, but I
> > guess that they work together to produce the basic note midi data
> > during recording.
> >
> >
> >
> > --- In disklavier@yahoogroups.com, Robert Welcyng <rwelcyng@a...>
> > wrote:
> >
> >>It would be helpful, for comparison, if one could simultaneously
> >
> > record
> >
> >>a performance both internally and to SONAR3. You have surely found
> >
> > that
> >
> >>the DKV will not support that.
> >>
> >>To test your hunch then, you might wish to record and reproduce
> >
> > one
> >
> >>performance internally to a DAT, and record and reproduce another
> >>performance using SONAR3 to a DAT.  Then, using software such as
> >
> > Sound
> >
> >>Forge, measure the inaccuracies of the reproduced audio recordings
> >>resulting from the two methods.
> >>
> >>That sounds like a lot of hard work.  I have done the first part
> >>(internally recorded and reproduced) to compare the differences
> >
> > between
> >
> >>an original and a reproduced performance of single notes on a Mark
> >
> > II.
> >
> >>That took weeks of tedious work.
> >>
> >>Watch out for subtle biases.  For example, if you feel better
> >
> > about
> >
> >>recording to SONAR3, perhaps you're are playing better to SONAR3.
> >
> > In
> >
> >>that case, the answer is simple: Don't do any testing that would
> >
> > spoil
> >
> >>that impression; rather, savor it, and continue to record your
> >
> > best
> >
> >>playing to SONAR3.
> >>
> >>Did you record the test piece first internally, and then record to
> >>SONAR3?  Could you have been more practiced the second time?
> >>
> >>Are you auditioning all reproductions from the same place in your
> >
> > music
> >
> >>room? Are you in a more comfortable chair when listening to SONAR3
> >>recordings?
> >>
> >>When you transfer a SONAR3 recording to diskette, does it degrade?
> >>
> >>You're probably not crazy.  It sounds like something interesting
> >
> > is
> >
> >>going on there.
> >>
> >>
> >>
> >>sjhart110110 wrote:
> >>
> >>>I may be crazy, but it seems like that when I record something
> >>
> > on my
> >
> >>>DC3A via the built in recorder it doesn't seem quite as accurate
> >>
> > as
> >
> >>>when using SONAR3 (via the MIDI connections to my PC) to record
> >>
> > the
> >
> >>>same piece of music.  Anyone else notice this?  I have been
> >>>recording pieces with SONAR3, converting them to MIDI and then
> >>>playing the files on DSK.  For some reason, this seems to work
> >>>better than using the internal recorder and then just playing
> >>
> > back.
> >
> >>>Especially for complex piano pieces (ie. lots of notes..)  I
> >>
> > could
> >
> >>>be dreaming.... SJ
> >>>
> >>>
> >>>To Post a message to the group, send it to:   disklavier@Y...
> >>>
> >>>To Post a private message to Todd Muncy, the group's founder and
> >>
> > moderator, send it to:
> >
> >>>disklavier-owner@Y...
> >>>
> >>>To reach our group's web site go to:
> >>>http://Yahoogroups.com/group/disklavier
> >>>
> >>>Todd's family web site was completely updated 012/22/03.  It
> >>
> > contains some fun disklavier content and links to midi sites among
> > many other things, The url is:
> >
> >>>http://MuncyFamily.com
> >>>
> >>>THINKING OF LEAVING THE GROUP?
> >>>If you are thinking of unsubcribing because you are getting too
> >>
> > much mail, go the the web site and change your email delivery option
> > instead.  That will fix the problem, while maintaining your access
> > to the group.  If you insist on leaving us completely send a blank
> > email to:
> >
> >>>disklavier-unsubscribe@y...
> >>>
> >>>Know someone who wants to join?  Have them send a blank email to:
> >>>disklavier-subscribe@e... or give them this link:
> >>>http://Yahoogroups.com/group/disklavier/join
> >>>
> >>>
> >>>Yahoo! Groups Links
> >>>
> >>>To visit your group on the web, go to:
> >>> http://groups.yahoo.com/group/disklavier/
> >>>
> >>>To unsubscribe from this group, send an email to:
> >>> disklavier-unsubscribe@yahoogroups.com
> >>>
> >>>Your use of Yahoo! Groups is subject to:
> >>> http://docs.yahoo.com/info/terms/
> >>>
> >>>
> >>>
> >>
> >>
> >>--
> >>Robert Welcyng
> >>Anchorage, Alaska
> >
> >
> >
> > To Post a message to the group, send it to:   disklavier@...
> >
> > To Post a private message to Todd Muncy, the group's founder and moderator, send it to:
> > disklavier-owner@...
> >
> > To reach our group's web site go to:
> > http://Yahoogroups.com/group/disklavier
> >
> > Todd's family web site was completely updated 012/22/03.  It contains some fun disklavier content and links to midi sites among many other things, The url is:
> > http://MuncyFamily.com
> >
> > THINKING OF LEAVING THE GROUP?
> > If you are thinking of unsubcribing because you are getting too much mail, go the the web site and change your email delivery option instead.  That will fix the problem, while maintaining your access to the group.  If you insist on leaving us completely send a blank email to:
> > disklavier-unsubscribe@...
> >
> > Know someone who wants to join?  Have them send a blank email to:
> > disklavier-subscribe@... or give them this link:
> > http://Yahoogroups.com/group/disklavier/join
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> >  http://groups.yahoo.com/group/disklavier/
> >
> > To unsubscribe from this group, send an email to:
> >  disklavier-unsubscribe@yahoogroups.com
> >
> > Your use of Yahoo! Groups is subject to:
> >  http://docs.yahoo.com/info/terms/
> >
> >
> >
>
>
> --
> Robert Welcyng
> Anchorage, Alaska
>
>
> To Post a message to the group, send it to:   disklavier@...
>
> To Post a private message to Todd Muncy, the group's founder and moderator, send it to:
> disklavier-owner@...
>
> To reach our group's web site go to:
> http://Yahoogroups.com/group/disklavier
>
> Todd's family web site was completely updated 012/22/03.  It contains some fun disklavier content and links to midi sites among many other things, The url is:
> http://MuncyFamily.com
>
> THINKING OF LEAVING THE GROUP?
> If you are thinking of unsubcribing because you are getting too much mail, go the the web site and change your email delivery option instead.  That will fix the problem, while maintaining your access to the group.  If you insist on leaving us completely send a blank email to:
> disklavier-unsubscribe@...
>
> Know someone who wants to join?  Have them send a blank email to:
> disklavier-subscribe@... or give them this link:
> http://Yahoogroups.com/group/disklavier/join
>
>
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
>  http://groups.yahoo.com/group/disklavier/
>
> To unsubscribe from this group, send an email to:
>  disklavier-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to:
>  http://docs.yahoo.com/info/terms/
>
>

Good morning, everyone.

In a message dated 1/31/04 4:33:55 PM, Bob writes:

> It would be helpful, for comparison, if one could simultaneously record
> a performance both internally and to SONAR3. You have surely found that
> the DKV will not support that.
> 
Actually, on a Mark IIXG or later Disklavier that has record and MIDI Out 
capabilities, you can do this.

What you will find is that there are small timing discrepancies between the 
events that are recorded internally and those that are recorded externally. I 
presume that this discrepancy is a result of the fact that there is no 
time-stamping in a live MIDI data stream. In other words, when you send MIDI data down 
a MIDI cable, you can only send one event at a time, and each event has to 
wait for its turn to be sent. The more dense the MIDI data stream, the more 
discrepancies there will be.

When you record to the interal disk drive or memory of the Disklavier, I 
presume that the instrument has an opportunity to record the actual timing of each 
event to disk as it occurs. During playback from disk, the Disklavier 
similarly has the advantage that it can read the timing of each event in the file as 
opposed to respond to each event as it is received from an external source.

So, I must conclude that the most accurate recordings are made when you 
record internally and that the most accurate playback occurs when you play back 
from an internal source. Having said that, I don' think   that most people will 
notice the timing discrepancies that you get when you record or playback using 
an external sequencer. In fact, it has been Yamaha's practice in the US to 
create its solo piano recordings by recording into the computer.

Regards,
PianoBench

PianoBench:

Yours is a very interesting reply.  I'll be curious to learn someday, 
while externally recording the Pro's greater volume of XP data, just how 
much inaccuracy is typically introduced due to the bottlenecking of the 
MIDI stream to the external computer.

I assumed incorrectly that models later than the Mark II were incapable 
of recording internally and simultaneously outputting a MIDI stream. 
One day when I've replaced my Mark II with a Pro, I'd like to try making 
measurements of the timing inaccuracies added by the queuing of MIDI data.

Before doing so, however, it would nice to learn what degree of timing 
inaccuracy is detectable by astute listeners. Also, realizing that there 
are inevitable variations among perfectly fine performances of the same 
piece by the same artist, the quest for ever greater accuracy in 
recording becomes, at some point, overkill.

PianoBench@... wrote:
> Good morning, everyone.
> 
> In a message dated 1/31/04 4:33:55 PM, Bob writes:
> 
>> It would be helpful, for comparison, if one could simultaneously record
>> a performance both internally and to SONAR3. You have surely found that
>> the DKV will not support that.
> 
> 
> Actually, on a Mark IIXG or later Disklavier that has record and MIDI 
> Out capabilities, you can do this.
> 
> What you will find is that there are small timing discrepancies between 
> the events that are recorded internally and those that are recorded 
> externally. I presume that this discrepancy is a result of the fact that 
> there is no time-stamping in a live MIDI data stream. In other words, 
> when you send MIDI data down a MIDI cable, you can only send one event 
> at a time, and each event has to wait for its turn to be sent. The more 
> dense the MIDI data stream, the more discrepancies there will be.
> 
> When you record to the interal disk drive or memory of the Disklavier, I 
> presume that the instrument has an opportunity to record the actual 
> timing of each event to disk as it occurs. During playback from disk, 
> the Disklavier similarly has the advantage that it can read the timing 
> of each event in the file as opposed to respond to each event as it is 
> received from an external source.
> 
> So, I must conclude that the most accurate recordings are made when you 
> record internally and that the most accurate playback occurs when you 
> play back from an internal source. Having said that, I don' think  that 
> most people will notice the timing discrepancies that you get when you 
> record or playback using an external sequencer. In fact, it has been 
> Yamaha's practice in the US to create its solo piano recordings by 
> recording into the computer.
> 
> Regards,
> PianoBench
> 
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-- 
Robert Welcyng
Anchorage, Alaska