Audio playback speed is wrong
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Audio playback speed is wrong
I went for an AMD A8 6500 CPU on a Gigabyte GA-F2A88X-D3H motherboard with 8GB RAM. I transferred my old M-Audio Delta 66 from the old PC. I'm using the on-board graphics as I don't need anything fancy. I don't generally play games. I installed Kubuntu 14.04 and added the Kxstudio repos.
I think it was mostly okay to start with, but one day I noticed that the sound in a Youtube video was out of tune with my guitar, i.e. playing too slow. This seemed to affect both Flash and html5 in Firefox and Chrome. I think it is also affecting purely audio playback in other apps.
I wonder if this could be 44100/48000 sample rate issue. I have the audio card master clock set to 44100 in Envy24. Where else should I be looking?
I did a quick bit of recording recently in Ardour and it was okay then, but I was having an issue with the recorded sound being distorted. Levels looked okay. I had all this working on the old PC, but I've probably forgotten to set something up.
Cheers
Steve
Sounds - http://soundcloud.com/steevc
Debut Album - https://steevcmusic.bandcamp.com/
Blog - https://peakd.com/@steevc/posts
Recording via M-Audio FastTrack Pro and Zoom H4. Got Korg nanoKONTROL and Zoom G3X plus Roland TD-07 drums
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Re: Audio playback speed is wrong
Not running Jack for general audio. I only start it when I need it.lazyklimm wrote:do you use jackd?
I think this proves the Delta is running at 48000, but I think I need it at 44100
Code: Select all
steve@slarti:~$ cat /proc/asound/card2/pcm0p/sub0/hw_params
access: MMAP_INTERLEAVED
format: S32_LE
subformat: STD
channels: 10
rate: 48000 (48000/1)
period_size: 441
buffer_size: 3528
Steve
Sounds - http://soundcloud.com/steevc
Debut Album - https://steevcmusic.bandcamp.com/
Blog - https://peakd.com/@steevc/posts
Recording via M-Audio FastTrack Pro and Zoom H4. Got Korg nanoKONTROL and Zoom G3X plus Roland TD-07 drums
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- Established Member
- Posts: 251
- Joined: Fri May 23, 2008 7:05 pm
- Location: Bedfordshire, UK
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Re: Audio playback speed is wrong
Ah well, I've learnt a bit about this stuff whilst investigating.
I tend to used 44.1 as most audio media is in that rate and it avoids extra processing. When recording I'm not sure I'd gain much from higher rates for what I do.
I'll see if it's still okay next time I start the PC.
Steve
Sounds - http://soundcloud.com/steevc
Debut Album - https://steevcmusic.bandcamp.com/
Blog - https://peakd.com/@steevc/posts
Recording via M-Audio FastTrack Pro and Zoom H4. Got Korg nanoKONTROL and Zoom G3X plus Roland TD-07 drums
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- Established Member
- Posts: 251
- Joined: Fri May 23, 2008 7:05 pm
- Location: Bedfordshire, UK
- Contact:
Re: Audio playback speed is wrong
Steve
Sounds - http://soundcloud.com/steevc
Debut Album - https://steevcmusic.bandcamp.com/
Blog - https://peakd.com/@steevc/posts
Recording via M-Audio FastTrack Pro and Zoom H4. Got Korg nanoKONTROL and Zoom G3X plus Roland TD-07 drums
-
- Established Member
- Posts: 251
- Joined: Fri May 23, 2008 7:05 pm
- Location: Bedfordshire, UK
- Contact:
Re: Audio playback speed is wrong
Somewhere in this process I lost the setting for the master volume control that let me control it via the speaker app or the buttons on my keyboard.
Is it just that something changed recently in the M-Audio drivers and has messed me up? I would have expected this to be pretty stable by now as it's old hardware.
Just thinking I could try with a live boot to see how it sounds then. Will try that later.
Update: I see there is on-going work on the driver. Maybe I should report a bug. I'm never sure where to report it if I don't know the cause
https://git.kernel.org/cgit/linux/kerne ... ci/ice1712
Steve
Sounds - http://soundcloud.com/steevc
Debut Album - https://steevcmusic.bandcamp.com/
Blog - https://peakd.com/@steevc/posts
Recording via M-Audio FastTrack Pro and Zoom H4. Got Korg nanoKONTROL and Zoom G3X plus Roland TD-07 drums
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- Established Member
- Posts: 251
- Joined: Fri May 23, 2008 7:05 pm
- Location: Bedfordshire, UK
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Re: Audio playback speed is wrong
If I wanted to report this as a bug, where should I do it? I don't know what 'level' of the system could be at fault.
Steve
Sounds - http://soundcloud.com/steevc
Debut Album - https://steevcmusic.bandcamp.com/
Blog - https://peakd.com/@steevc/posts
Recording via M-Audio FastTrack Pro and Zoom H4. Got Korg nanoKONTROL and Zoom G3X plus Roland TD-07 drums