Sound samples sound pitched down when imported to Amos

Brick Nash · 23 September 2017, 16:28

Ok this isn't technically code but it is to do with Amos.

I have the main Double Dragon sound effects ripped from the arcade game and so I converted them into an iff sound file using Goldwave and set the sample rate at 22000Hz as I think the max the Amiga can handle is 28000Hz or something.

Playback in Goldwave as an iff is fine, but when I import the sound effect to Amos they appear to be pitched shifted down quite a lot and Amos won't let me pitch up past 32000Hz.

Am I forgetting to do something?

Samurai_Crow · 23 September 2017, 16:32

Only an ECS Amiga can play such high rate samples. AMOS was coded for OCS mostly so that feature is likely unsupported.

Try a lower sampling rate.

Sent from my Prism II using Tapatalk

Brick Nash · 23 September 2017, 17:03

Thanks for the reply.

Ok I tried it at 16000Hz and when I sample up within Amos it sounds a bit closer to how it should. However, the sample itself seems to have been cut off about halfway through in the Amos sampler when I import it.

EDIT: I exported it at 8000Hz and I can now pitch it up to near perfect level, but it's still only loading the first half of the sample.

Samurai_Crow · 23 September 2017, 19:18

Is the sample longer than 128k?

Sent from my Prism II using Tapatalk

Brick Nash · 24 September 2017, 11:05

They might be. I'll admit it's not something I was aware of. I did find a workaround in that I imported the iffs to Protracker, upsampled and then saved before importing into Amos where the whole sample was available. There was a big pop which appeared at the start of the samples after saving in the bank, but some trimming saw to that and they were good to go.

Amos is a funny little program sometimes, but I still love it.

Anyway, thanks for the info. I'll add it to my ever growing book of "things to check".

I don't know where I'd be without you guys on the forum, so thanks again.

Samurai_Crow · 24 September 2017, 21:52

You're welcome!

Sent from my Prism II using Tapatalk

23 September 2017, 16:28	#1
Brick Nash Prototron Join Date: Mar 2015 Location: Glasgow, Scotland Posts: 411	Sound samples sound pitched down when imported to Amos Ok this isn't technically code but it is to do with Amos. I have the main Double Dragon sound effects ripped from the arcade game and so I converted them into an iff sound file using Goldwave and set the sample rate at 22000Hz as I think the max the Amiga can handle is 28000Hz or something. Playback in Goldwave as an iff is fine, but when I import the sound effect to Amos they appear to be pitched shifted down quite a lot and Amos won't let me pitch up past 32000Hz. Am I forgetting to do something?

23 September 2017, 17:03	#3
Brick Nash Prototron Join Date: Mar 2015 Location: Glasgow, Scotland Posts: 411	Thanks for the reply. Ok I tried it at 16000Hz and when I sample up within Amos it sounds a bit closer to how it should. However, the sample itself seems to have been cut off about halfway through in the Amos sampler when I import it. EDIT: I exported it at 8000Hz and I can now pitch it up to near perfect level, but it's still only loading the first half of the sample. Last edited by Brick Nash; 23 September 2017 at 18:00.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Annoying sound from the sound buffer when switching screens	hexaae	support.WinUAE	1	01 April 2017 19:06
Need sound samples from Starray!	Dunny	support.Games	7	10 June 2013 19:30
Sound is muffled after boot until change of settings - sound filter emulation issue?	rsn8887	support.WinUAE	1	30 May 2010 20:44
Sound and Voice Samples - Help...	Peter	support.Other	1	24 March 2007 01:21
Sound samples archive/database	Kodoichi	Retrogaming General Discussion	7	30 October 2001 16:57

23 September 2017, 16:32	#2
Samurai_Crow Total Chaos forever! Join Date: Aug 2007 Location: Waterville, MN, USA Age: 49 Posts: 2,186	Only an ECS Amiga can play such high rate samples. AMOS was coded for OCS mostly so that feature is likely unsupported. Try a lower sampling rate. Sent from my Prism II using Tapatalk

23 September 2017, 19:18	#4
Samurai_Crow Total Chaos forever! Join Date: Aug 2007 Location: Waterville, MN, USA Age: 49 Posts: 2,186	Is the sample longer than 128k? Sent from my Prism II using Tapatalk

24 September 2017, 11:05	#5
Brick Nash Prototron Join Date: Mar 2015 Location: Glasgow, Scotland Posts: 411	They might be. I'll admit it's not something I was aware of. I did find a workaround in that I imported the iffs to Protracker, upsampled and then saved before importing into Amos where the whole sample was available. There was a big pop which appeared at the start of the samples after saving in the bank, but some trimming saw to that and they were good to go. Amos is a funny little program sometimes, but I still love it. Anyway, thanks for the info. I'll add it to my ever growing book of "things to check". I don't know where I'd be without you guys on the forum, so thanks again.

24 September 2017, 21:52	#6
Samurai_Crow Total Chaos forever! Join Date: Aug 2007 Location: Waterville, MN, USA Age: 49 Posts: 2,186	You're welcome! Sent from my Prism II using Tapatalk

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)