Re: [SoX-users] how to get volume adjustment with libsox?

[TJF <tjf...@we...>]

Hi,

the commands are the same (batch/libsox). Do the same as shown in the 
vol-example. May be you want to have this (not tested):

    e = sox_create_effect(sox_find_effect("vol"));
    args[0] = "-10db", assert(sox_effect_options(e, 1, args) == 
SOX_SUCCESS);
    assert(sox_add_effect(chain, e, &in->signal, &out->signal) == 
SOX_SUCCESS);

    e = sox_create_effect(sox_find_effect("stat"));
    args[0] = "-v", assert(sox_effect_options(e, 1, args) == SOX_SUCCESS);
    assert(sox_add_effect(chain, e, &in->signal, &out->signal) == 
SOX_SUCCESS);

Hope this helps.

Regards
Thomas



xl...@so... schrieb:
>
> Hi TJF,
>
>  
>
> I'm sorry that I think I didn't describe my question clearly. In fact, 
> I don't want to change the volume, I only want to get the volume 
> adjustment info, such as executing the command: sox a.wav -n stat 
> -v. If execute that command, sox will return the volume adjustment 
> value. I want to get that value in my application using libsox.lib not 
> using batch commands. I think maybe I should add a 'stat' effect to 
> the effect chain, but I don't know how to set the options for 'stat' 
> effect and how to get the result. Could you give me some suggestion?
>
>  
>
> Best regards,
>
>  
>
> Xldelg
>
>
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