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Re: Features for a new release. (was Re: [Denemo-devel] Midi output faul

From: Benoit Rouits
Subject: Re: Features for a new release. (was Re: [Denemo-devel] Midi output faulty for whole measure rests in 4/2 time)
Date: Wed, 29 Oct 2008 21:51:53 +0100
User-agent: Thunderbird (X11/20080925)

There is a standard called usb-midi, and alsa support that standard.
However, several USB musical keyboards does not conform to this standard. IMHO, it's safer to buy a pure midi keyboard plus a midi to usb-midi interface. I have such an interface: a yamaha UX96 (it's an old model). Such interfaces are not raw cables, they must contain some (even small) electronic components. I think that "Vista" compatible products are true usb-midi (so, work with alsa) since Vista seems to use extensively the usb standards to get rid of buggy drivers.
- Ben

Richard Shann a écrit :
On Wed, 2008-10-29 at 08:11 -0500, Jeremiah Benham wrote:
importmidi breaking voices into other staffs
(ok - I don't know what this is about, I guess because I have never
importmidi in earnest)
Where you at one time trying to get a midi controller or usb midi
connector for your midi controller? Have you given up on that idea
you have the pitch detection working better for you?
It did slip down the priority list as a result of getting the pre-amp.
Then it went up again as I discovered the hum was getting in before the
pre-amp (it's rather erratic). Then it went down again as I found that
if I powered the small Yamaha keyboard via batteries it solved the mains
hum problem (naturally).
However, I have been tempted by the local supermarket offering a 61-note
Yamaha keyboard at a low price - I tend to run out of notes on the small
keyboard I have been using. But it doesn't have a USB output, only midi
connector, and so I started looking for those, only to find that they
are much more expensive. Which I can't really understand, as I see midi
to USB conversion cables sold for next to nothing - I don't know what
these really do, let alone whether Alsa &c support them... As far as I
can make out, there does seem to be some usb/midi standard that allows
people to sell usb devices (such as midi controller keyboards) with no
software drivers which Linux will support. But whether there is a a
simple cable that would take the midi output of my small Yamaha keyboard
and plug it into the USB port on the computer I can't figure out. The
people selling the cables don't give any details about what they do.

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