Converting MIDI byte array to MP3 byte array

Question

Does someone know how to convert a MIDI file (average playback time of 30 seconds) which is represented in a byte array to an MP3 byte array?

So, ideally I need to have a C# function which accepts a MIDI byte array and returns a MP3 byte array.

The conversion should not take more than 2 - 3 seconds.

Are there any frameworks / tools / 3rd-party DLLs to perform this easily?

Please let me know.

Thanks, Vijay

You're aware you'll need a software synthesizer to do so? It can be the crappy one built into Windows though. — herzmeister
– herzmeister, Commented Oct 8, 2010 at 12:35
@ herzmeister der welten :Could you please provide resources, to understand the basics of programming audio conversion ? — vijaysylvester
– vijaysylvester, Commented Oct 8, 2010 at 12:49
As @Aliostad said, a MIDI file contains no audio. It contains instructions when to play which note with which volume (and other parameters). It's like automation for a music keyboard or another electronic instrument. The quality can differ enormously depending on which device is used. For more info see en.wikipedia.org/wiki/MIDI . Windows has such a "keyboard" "built in". It will generate the appropriate sounds when it reads a MIDI file and play it. — herzmeister
– herzmeister, Commented Oct 8, 2010 at 12:59
is.gd/igp4m -- I've seen soooo many questions about converting MIDI to audio I had to write this. Please take the time to read it if you are considering writing some software system which needs to do that. — Nik Reiman
– Nik Reiman, Commented Dec 6, 2010 at 18:57

Aliostad · Accepted Answer · 2010-10-08 12:35:30Z

2

MIDI file is not audio, it is audio instructions. This has to be "rendered/played" to audio (using various MIDI players depending on the capability of your sound card) and then compressed to MP3.

I do not know a DLL that can do all of that. Lame MP3 DLL is a free open source DLL that can do the compression for you.

http://lame.sourceforge.net/

answered Oct 8, 2010 at 12:35

Aliostad

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herzmeister · Accepted Answer · 2010-10-08 12:43:39Z

1

Over at CodeProject there's a C# MIDI Toolkit which could help you. You'll probably have write the code to record the output stream yourself though.

answered Oct 8, 2010 at 12:43

herzmeister

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vijaysylvester Over a year ago

Thanks herzmeister der welten

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