YM2149: How generate noise wave? Modulation tunes?

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stormer
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YM2149: How generate noise wave? Modulation tunes?

Postby stormer » Fri Sep 08, 2017 11:22 pm

Now, I made a YM Synther, it's register data from MIDI in port.

As you know, YM2149 have 3 square wave generater and 1 noise wave generater. I can play it with MIDI message. But, the sound just standard square wave. To make nice chiptune music thats not enough!

So, how can I modulation the sound to make some effect, for example: vibrato、blend, etc. Also I dont know how to generate noise wave, for drum sound.

I really need some infomation about that, please help :) Thanks!

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Re: YM2149: How generate noise wave? Modulation tunes?

Postby farvardin » Sat Sep 09, 2017 7:08 pm

use a tracker instead, see my answer there: viewtopic.php?f=18&t=32248&p=326987#p326987

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Re: YM2149: How generate noise wave? Modulation tunes?

Postby charles » Sun Sep 10, 2017 3:50 pm

this program might give insight on structured .snd file
basically anaylzes harmonic content and prints to screen the fundementals of a sound
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Re: YM2149: How generate noise wave? Modulation tunes?

Postby FedePede04 » Sun Sep 10, 2017 5:20 pm

stormer wrote:Now, I made a YM Synther, it's register data from MIDI in port.

As you know, YM2149 have 3 square wave generater and 1 noise wave generater. I can play it with MIDI message. But, the sound just standard square wave. To make nice chiptune music thats not enough!

So, how can I modulation the sound to make some effect, for example: vibrato、blend, etc. Also I dont know how to generate noise wave, for drum sound.

I really need some infomation about that, please help :) Thanks!


are your "YM Synth" software or hardware, if it is hardware, you need a co processor to do the FX, like a arpeggio,vibrato, bend ect.
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Re: YM2149: How generate noise wave? Modulation tunes?

Postby stormer » Mon Sep 11, 2017 6:55 am

charles wrote:this program might give insight on structured .snd file
basically anaylzes harmonic content and prints to screen the fundementals of a sound


Thank you!

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Re: YM2149: How generate noise wave? Modulation tunes?

Postby stormer » Mon Sep 11, 2017 6:58 am

FedePede04 wrote:
stormer wrote:Now, I made a YM Synther, it's register data from MIDI in port.

As you know, YM2149 have 3 square wave generater and 1 noise wave generater. I can play it with MIDI message. But, the sound just standard square wave. To make nice chiptune music thats not enough!

So, how can I modulation the sound to make some effect, for example: vibrato、blend, etc. Also I dont know how to generate noise wave, for drum sound.

I really need some infomation about that, please help :) Thanks!


are your "YM Synth" software or hardware, if it is hardware, you need a co processor to do the FX, like a arpeggio,vibrato, bend ect.


Thanks! Its a hardware. Arduino UNO + YM2149. Sorry, whats co processor? Microcontrollers? Im finding the infomation for FX.

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Re: YM2149: How generate noise wave? Modulation tunes?

Postby FedePede04 » Mon Sep 11, 2017 1:41 pm

maybe the Arduino UNO can be use,
like you wrote the ym2149 is only a tone generator and a noise generator, so every fx and you want to do need to be software made, and they have to be performed with precision or you will be able to hear it, so things like eg. sid sound will be hard to do over USB and even harder to do over midi. you could probably make it play YM files over the USB, but i don't know if it can be done using midi.

so what i would do (if it was me), is to make a (YM player) or a (custom player) on a micro controller and just dump music files on to it,
and the control start/stop from midi or usb.
if you want to let it work as a midi synth you need to do your own midi interface, again you need a micro for that.
and SndH is also out of the way, it is even more crazy, there you need to emulate the 68000 and 68901 MPF (or have the them as real hardware) :D
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