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Published 20 hours ago • verified publisher icon bbbradsmith

Playback speed issues with stereo mode. (v2.5 beta)

Open B00daW opened this issue 4 years ago • 9 comments

Brad,

I am using Wine v5.7, pulseaudio and a Realtek audio chipset with Linux v5.6.10 kernel. If "stereo mode" is enabled in v2.5 beta of NSFPlay then the audio file is played back at max speed. If it is disabled, it plays normally.

Oh! And stereo mode seems to be the default configuration on start-up. Until resolved, a dirty fix could be to not include it as a default option.

Please investigate. Thanks!

B00daW avatar May 03 '20 19:05 B00daW

Stereo mode has to stay as the default option, mono causes problems for a lot of hardware (esp. people with surround sound setup).

As for the max speed issue, could you describe that in more detail? Is the pitch different? Is it exactly 2x as fast? If you save as WAV, is the output correct?

bbbradsmith avatar May 03 '20 19:05 bbbradsmith

https://cdn.discordapp.com/attachments/706602783154896988/706602844824010793/1942.mp3

So this is very bizarre. First bit of recording is with stereo mode off on 1942. Second bit is with stereo mode on. However, Audacity is recording my output very slowly @48KHz from 48KHz source, but when I hear it from NSFPlay it's very fast. May have to record directly from the headphones jack onto something else if you can't figure it out from this. :/

B00daW avatar May 03 '20 20:05 B00daW

What exactly are you recording? The loopback from your audio drivers?

What happens when you save as WAV? (The red folder icon on NSFPlay's panel.) Is the audio still corrupted there, or is this only when outputting to audio drivers?

bbbradsmith avatar May 03 '20 20:05 bbbradsmith

https://cdn.discordapp.com/attachments/706602783154896988/706674611257081966/1942b.mp3

OK. Here is the audio recorded from the Linux laptop to another source.

Weird how before it was consistently working when stereo mode was turned off. Now it seems that it's always playing fast like this. Am I doing something wrong?

B00daW avatar May 04 '20 01:05 B00daW

What happens when you export as WAV?

bbbradsmith avatar May 04 '20 02:05 bbbradsmith

https://cdn.discordapp.com/attachments/706602783154896988/706852316942434344/1942wav.mp3

Exporting to WAV has no issues.

B00daW avatar May 04 '20 12:05 B00daW

Hmm, that MP3 is mono. Does the WAV export have any problem in stereo? (If WAV export works, that narrows down the possibilities a lot for what can be going wrong.)

bbbradsmith avatar May 04 '20 18:05 bbbradsmith

https://cdn.discordapp.com/attachments/706602783154896988/707218223275442286/3dbattleswav2.mp3

This is 3D Battles of World Runner in stereo mode. Both square channels are used in this one so it should output a stereo file. I don't notice much of a difference.

B00daW avatar May 05 '20 13:05 B00daW

Thanks, that rules out a lot of possibilities.

bbbradsmith avatar May 05 '20 16:05 bbbradsmith

With no other reports of this issue, I will close it for now. Please re-open if it resurfaces.

bbbradsmith avatar Oct 26 '22 18:10 bbbradsmith