Does the STE PCM audio have volume control?

[Foebane]

I've been comparing YouTube demoscene videos of real hardware of an Atari STE with Steem SSE emulation, and I've noticed that the PCM samples in the videos sometimes fade in and out, but on Steam, the sample is either on or off, no volume changes.

 

Does a real STE have volume control for the PCM audio or is it just editing by the video author? If it's the latter, why is audio on Steem SSE so poor?

 

[Christos]

I won't say anything about STEEM SSE, but volume control is handled by the LMC 1992 microchip. Steem should support it. Which videos did you compare?

[Foebane]

I won't say anything about STEEM SSE, but volume control is handled by the LMC 1992 microchip. Steem should support it. Which videos did you compare?

 

These are links to demos used on real hardware (as far as I know) and how they should sound, followed by what happens when I run them in Steem SSE:

 

https://www.youtube.com/watch?v=oarR61SeY8E

On Steem SSE, the sound of the lapping waves and seagulls suddenly cuts in, and then cuts out - no volume changes.

 

https://www.youtube.com/watch?v=dA50pe1EjEE

On Steem SSE, at the beginning with the footsteps and polaroids, there is a click at the start and end of every footstep.

 

https://www.youtube.com/watch?v=fpF_u4mYVAI

On Steem SSE, the music has lots of additional clicking added.

 

https://www.youtube.com/watch?v=srPy8IhAtQo

On Steem SSE, the music with the robotic voice suddenly cuts out, rather than fades out as it should.

 

These are some examples of how sound emulation is poor in this software, with no PCM volume control and annoying clicking when PCM is used.

[moulinaie]

I've been comparing YouTube demoscene videos of real hardware of an Atari STE with Steem SSE emulation, and I've noticed that the PCM samples in the videos sometimes fade in and out, but on Steam, the sample is either on or off, no volume changes.

 

Yes, the STE has volume, tone and balance control through reserved addresses.

 

Guillaume.

[ParanoidLittleMan]

I'm not some fan of demos, so never took care about how they sound in some emulator.

Things are that we don't know for sure how volume control is done in those demos. You can do all it without LMC.

Samples can be done with fading, or you can do fading in sample playback. That requires low CPU load.

Dealing with LMC is pretty troublesome.

When I will have time will do tests with Steem. In meantime try to contact Steven Seagal, the man behind Steem SSE.