Squeak and the SoundPlugin in cog VM

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Squeak and the SoundPlugin in cog VM

Christian Kellermann
Dear Lists!

I have written a VM SoundPlugin for OpenBSD's native sound system
sndio. Which means that now I have sound in Squeak on this platform.
However I am a bit struggling with the sound quality of SampledSound's
like in the eToys SoundLibrary. Those produce an echo effect when
played and I have been unable to determine the cause. However the
Bach fugue Tests sound perfect so I am suspecting some miscalculations
in sample data somewhere on the way.

As I have been trying to confirm the 'normal' behaviour on Linux I
stumbled over issues with the sound plugins on my ArchLinux box:
None of them work.

ALSA, OSS or Pulse Audio plugins error out in different stages of
the drivers.

Am I the only one? What's the last known good state of those?  What's
the last known good state of sound output for the SoundLibrary
SampledSounds?

I have tried with latest master and trunk of both opensmalltalk-vm
and Squeak.

I am grateful for any hints. Once that works I will propose patches
to the opensmalltalk-vm code base.

Thanks,

Christian


--
May you be peaceful, may you live in safety, may you be free from
suffering, and may you live with ease.
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Re: Squeak and the SoundPlugin in cog VM

Tobias Pape
To pick up the first mail in this thread again,

Thank you Christian for your contribution!

Best regards
        -Tobias

> On 05.12.2019, at 08:40, Christian Kellermann <[hidden email]> wrote:
>
> Dear Lists!
>
> I have written a VM SoundPlugin for OpenBSD's native sound system
> sndio. Which means that now I have sound in Squeak on this platform.
> However I am a bit struggling with the sound quality of SampledSound's
> like in the eToys SoundLibrary. Those produce an echo effect when
> played and I have been unable to determine the cause. However the
> Bach fugue Tests sound perfect so I am suspecting some miscalculations
> in sample data somewhere on the way.
>
> As I have been trying to confirm the 'normal' behaviour on Linux I
> stumbled over issues with the sound plugins on my ArchLinux box:
> None of them work.
>
> ALSA, OSS or Pulse Audio plugins error out in different stages of
> the drivers.
>
> Am I the only one? What's the last known good state of those?  What's
> the last known good state of sound output for the SoundLibrary
> SampledSounds?
>
> I have tried with latest master and trunk of both opensmalltalk-vm
> and Squeak.
>
> I am grateful for any hints. Once that works I will propose patches
> to the opensmalltalk-vm code base.
>
> Thanks,
>
> Christian



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