sound gain in Gizmo

[wim1976]

I am learning more and more about Gizmo. I have been experimenting with a sound file. In the past I bought a sound package of Synchrosoft for FSX and I am trying to convert this to X-Plane. But there is a difference in the sounds via Gizmo/X-Plane and FSX. The FSX-sounds have a higher volume than X-Plane, but the volume differences differs at the different gain values. This causes an other sound character in X-Plane (the lower sounds are more pronounced than in X-Plane).

 

Is there somebody wo experienced the same difference?

Is there an easy method to compensate this differences?

For FSX there is FS sound studio which I used to understand the settings of the FSX soundfiles. Is there a similar program/plugin for X-Plane?

[Ben Russell]

Gizmo's sound gain control is a direct-mapping into OpenAL gain controls.

No value adjustments are made.

[wim1976]

Contains this document the right info about the Open AL implementation in Gizmo?

 

http://www.openal.org/documentation/openal-1.1-specification.pdf

[Ben Russell]

Correct. Almost all of OpenAL documentation can be applied to working with Gizmo64.

 

I've added a small placeholder element to the API docs:

 

http://www.gizmo64.com/Gizmo64_API.htm#al.readme

 

 

This is worth reading:

http://coronalabs.com/blog/2011/07/27/the-secretundocumented-audio-apis-in-corona-sdk/

[wim1976]

It looks like luaal is gone: https://www.openhub.net/p/luaal/enlistments

[Ben Russell]

https://hg.assembla.com/almixer_isolated/file/358b0bd5df43/Isolated/luaal

[wim1976]

Another good document for OpenAl programming:

 

http://grva.lamce.coppe.ufrj.br/labcogsdk/download/extras/openal/OpenAL_Programmers_Guide.pdf

 

Especially usefull in conjunction with the OpenAL 1.1 Specification and Refercence (see post #3).

[wim1976]

After reading the documentation of OpenAL I conclude my ears are still good. OpenAl have a 6dB attenuation at 0.5. FSX plays at -3B at that moment. FSX uses an other gain curve. So I have to think about a conversion formula.