Problem playing modules from fast ram

vagrant · 19 February 2013, 06:06

I've had a few sound distortion issues with my 1200 lately I was able to solve using a different PSU.
I've now noticed that playing most sound modules from fast ram result in unwanted noise/beeps (etc) during some songs.. playing from chip ram is fine.
I've tried both hippo and eagleplayer..
Is this normal behavior?

Obviously I'd prefer to use fast, some of the tunes are quite large

A1200 Cobra 030/40, 128mb fast.
Indivision AGA MK2.
ClassicWB installed.

daxb · 19 February 2013, 11:07

No problems here with HippoPlayer using fastram for pt mods.

demolition · 19 February 2013, 11:27

For some reason I cannot get Eagleplayer to play from chip ram at all, but using the fast ram amp the sound quality is not as good as playing from chip using hippoplayer for example. It's like there is more jitter in the playback (some notes doesn't start at the correct time). This is both in an A600 with the ACA620 or in my 1200 with ACA1232.

thomas · 19 February 2013, 11:37

The Amiga can play samples only from Chip RAM. Therefore if you play from Fast RAM, the CPU has to copy the sampes to Chip RAM before they can be played. Some players also resample the data (hence the lower quality). If the CPU is too slow or is interrupted by other work, sound glitches can happen.

vagrant · 19 February 2013, 23:51

Ok thanks guys

19 February 2013, 06:06	#1
vagrant Registered User Join Date: Mar 2012 Location: Australia Age: 44 Posts: 1,126	Problem playing modules from fast ram I've had a few sound distortion issues with my 1200 lately I was able to solve using a different PSU. I've now noticed that playing most sound modules from fast ram result in unwanted noise/beeps (etc) during some songs.. playing from chip ram is fine. I've tried both hippo and eagleplayer.. Is this normal behavior? Obviously I'd prefer to use fast, some of the tunes are quite large A1200 Cobra 030/40, 128mb fast. Indivision AGA MK2. ClassicWB installed.

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19 February 2013, 11:07	#2
daxb Registered User Join Date: Oct 2009 Location: Germany Posts: 3,307	No problems here with HippoPlayer using fastram for pt mods.

19 February 2013, 11:27	#3
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 44 Posts: 4,190	For some reason I cannot get Eagleplayer to play from chip ram at all, but using the fast ram amp the sound quality is not as good as playing from chip using hippoplayer for example. It's like there is more jitter in the playback (some notes doesn't start at the correct time). This is both in an A600 with the ACA620 or in my 1200 with ACA1232.

19 February 2013, 11:37	#4
thomas Registered User Join Date: Jan 2002 Location: Germany Posts: 7,026	The Amiga can play samples only from Chip RAM. Therefore if you play from Fast RAM, the CPU has to copy the sampes to Chip RAM before they can be played. Some players also resample the data (hence the lower quality). If the CPU is too slow or is interrupted by other work, sound glitches can happen.

19 February 2013, 23:51	#5
vagrant Registered User Join Date: Mar 2012 Location: Australia Age: 44 Posts: 1,126	Ok thanks guys

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