Hello and wlcome in the forum

I converted the game Unfortunately the music could not be well converted, because Dave does not have envelope feature, and the program converted to 50Hz interrupt which is not enough for software emulation for envelopes, the AY music is using using very short envelopes.
Dave have similar capabilities, in some point it is better, in some point it is worse than AY.
Dave have
3 tone generator (frequency: 125,000 / (n+1) Hz. ), it has polynomial counter distortion, high pass filter, ring modulator option

1 noise channel which frequency can be 32.25 kHz, frequency of tone channel 0,1,2, some polynomial counter option can be set, and high/low pass filter, and ring modulator can be set to specific tone channels.

Register 7: enable/disable tone channel 0,1,2, turn on/off 2 6 bit D/A output channel, DAVE generated interrupt rate: 1kHz, 50Hz, tone generator 0/1 frequency.

3 volume control (6bit) for left side, and 3 volume control for right side ( if D/A is enabled 2 of them are D/A output)

And Envelope is not implemented

Thank you very much for the link, I used http://www.cpcgamereviews.com/

Hello,

If the problem is only the enveloppe, the right solution is to remove them in the tunes . I have done that quicky this evening. You will find there updated SKS music of Sub Hunter. I have replaced the instrument 3 by another one (that uses a very simple scheme to sound not too badly). I don't know if the volume of this instrument is ok in every tune, as I have done the job under a CPC emulator, Winape.

To obtain binary files from the SKS files, just launch the GS program from the Starkos archive. The files can be found there :

http://tj.gpa.free.fr/temp/subhunt.zip

That would be nice if "Sub hunter Enterprise" could have decent music .

T&J/GPA

To obtain binary files from the SKS files, just launch the GS program from the Starkos archive. The files can be found there :

http://tj.gpa.free.fr/temp/subhunt.zip

That would be nice if "Sub hunter Enterprise" could have decent music .

T&J/GPA

Bonjour Hervé

I will change the music in Sub Hunter. We will see if noises are ok
Thank you very much

I created binary from the songs, unfortunately GS creates ST10 format, and the game contains songs in AT10 format, I could not test it. Could you help me please, which program should be used to generate binary in AT10 format?
Another reason could be why the drums are not perfect: for emulating more noise channels the tone generators are used with 7­bit polynomial counter distortion.
I created another version, the difference is only that CPC noise value multipled by 8 not by 4, I hear that it is not the same as on CPC, but it seems to be better, but I do not have white ears

Hello,

Well, it seems that Axelay has not used Starkos but a PC program, "Arkos tracker" to compilate the tunes. It's a tool done by Targhan/Arkos that needs .NET. It can import Starkos files and export them as binary files for many computers (Amstrad CPC, Msx, Spectrum if I remember well).

I will check tomorrow the music to verify that "noises" are only used at a time on one channel.

Yours

Hervé

Merci beaucoup

I checked menu music only, there sometimes 2 noise channel are active for a short time, but if the game uses only one noise channel, then we can use noise channel of EP Other thing, is it possible to create a good drum effect without using noise channel?
I will check Arkos tracker.

I created two new versions for music (short musics are not ok yet, but if you like this solution, I will correct them), EP128emu 2.0.9 snaphots were placed into the zip file, could you please check it?
Both version works in the same way, the difference is only that noise volume is half of the other. In these versions the noise generator frequency is fix 30kHz, and value of AY noise register is loaded into DAVE noise volume controls.

Hi again...

I have listened to your test, that's better than original Enterprise sounds but does not sound like loud drums. I have made some updates to the music (except for the Bonus stage) that may help to have a better result (all drums in a music use the same note).

http://tj.gpa.free.fr/temp/subhunt_v3.zip

Hervé