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Post: Author:
FamiTracker > General > FamiTracker Talk > Changing the volume of the Triangle channel? Owner: Dafydd New post
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Changing the volume of the Triangle channel? Posted: 2008-01-07 13:09  (Last Edited: 2008-01-07 13:14) Reply | Quote
Dafydd

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Location: Uppsala, Sweden
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#1032
In the list of channel effects, the effect Z is described as such:
Quote:
Zxx DPCM delta counter, changes the delta counter (through a write to $4011), affects volume of noise and triangle. xx is between 0 - 80

I've tried all values between Z00 and Z80 and there is no change to the instrument's volume, to any channel. The noise channel volume is easy to change, but the triangle channel... has no other way of doing it. So why doesn't the Z effect work?

Is there a way to change the volume of the DPCM channel?

Also, does anyone have the Konami DPCM drum samples in the .dmc format?

Posted: 2008-01-08 02:19 Reply | Quote
jsr
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#1034
The Z-value changes when you play samples, and the triangle will only go to about 50% of full volume at Z7F, so it's not always useful. If you have problems with it in NSFs then it's not supported by the player (not all supports it).

DPCM volume cannot be changed.
Posted: 2008-01-08 20:08 Reply | Quote
Dafydd

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#1037
I'm not sure I understand what you mean... do you think you could make me a really simple ftm file where the triangle changes in volume?
Posted: 2008-01-10 01:04 Reply | Quote
Jarhmander

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#1042
This is an example.

Attachments:
volume.ftm (1 Kb)
Posted: 2008-01-10 17:47 Reply | Quote
Dafydd

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#1043
Dooooh! Thanks, Jarh. I've been using the Z effect on the triangle channel instead of on the DPCM channel. That explains it. Thanks again!
Posted: 2008-01-11 20:03 Reply | Quote
Jarhmander

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#1050
jsr wrote:
The Z-value changes when you play samples, and the triangle will only go to about 50% of full volume at Z7F, so it's not always useful. If you have problems with it in NSFs then it's not supported by the player (not all supports it).

DPCM volume cannot be changed.


DPCM volume CAN be somehow changed. If the samples playing are relatively quiet then DPCM output will be quieter if the DAC status of this channel group (triangle - noise - DPCM) is high. this is because of the non-linear mixing of these channels. It is only noticeable on real NES hardware and on jsr's NSFlive! NSF player.
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