Help with MIDI

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I have a yamaha DGX 520 if you don't know what this is ,it is a 88 keyboard

It does have midi but the is no midi ports there is only one USB out , just to let you know it works fine but i'm trying to find a sound card that will let me use it.
see all i have to do is run a usb in to my computer run the driver and done.
but now i'm tring to find a soundcard so i can run zero latency.

and thats y i'm here because i can't find a external sound card with usb in for midi and one out for the computer. most of the cards i have found is midi in and outs one usb to go to the computer ,is there anyway i could use a hub are something. thanks
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Is the audio carried via USB? You don't actually need a soundcard with USB. Nor, I suspect, will you find one. Detail your setup properly and try to give some idea of what you're trying to accomplish. What are you using for a host?
Please understand that this is coming from someone who quotes Terry Pratchett - Melkor

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Your keyboard can only connect to a PC through the USB port. You have no need for a special sound card so far.

Your message sounds a bit confusing to me. Maybe you need a bit of explanation what's what.

MIDI is a protocol that's about sending and receiving digital messages that carry info about which keys are pressed etc. No actual sounds, only digital information. Latency is (usually) no issue here. Your computer software will have a setup section where you can chose what MIDI port or device it will record from, or send data to (so your keyboard can play the notes that are recorded.)

Ehm, there's one known latency issue: the MicroSoft GS Software synthesizer has a latency of about 400ms. Use anything else for midi playback, and that's gone.

Now what you actually hear coming out of the computer is audio. On an off-the-shelf PC there are often horrendous latency issues (delay between a note being played and the sound coming out of your speakers)
There are two ways to cure that:
1) www.asio4all.com is a generic ASIO driver that uses smart technology to reduce buffer sizes and thus latency on most builtin soundcards
2) buy a soundcard geared towards musicians that has it's own ASIO driver. This is the best way to get low-latency performance.

So what you can do, is hook up the keyboard to your computer through USB. Your music software can record the midi notes and play them back through the keyboard. So it will be the keyboard making the sounds, not the computer. You could also record the audio from the keyboard, but for that you need to hook up the line outputs of the keyboard to the line/aux input of your computer. Then in your music software you'll be recording an audio track, and not a midi track.

The midi notes from your keyboard can be sent to a software synth (VSTi) in your computer. If you want low-latency performance you'll probably need a proper sound card with it's own ASIO drivers. To help selecting one we'd like to know what your main music software is, weather you use Mac or PC, weather you have a desktop or laptop/notebook, any spare USB or FireWire ports, etc.

Or you could fill in the Soundcard Wizard at http://www.recordingreview.com/soundcar ... wizard.php
You don't need midi on your soundcard since that will be done through the USB cable.
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