Re: [pygame] Obtain actual volume of sample being played

["Forrest Voight" <voights@xxxxxxxxx>]

You could access a sndarray and average the current portion of it. You
could probably even use numpy to do  a fourier transform on it.

On Tue, Jul 15, 2008 at 12:26 PM, Wyatt Olson <wyatt.olson@xxxxxxxxx> wrote:
> Hello,
>
> Does anyone know if it is possible to obtain the actual volume of the sample
> being played at a given moment?  This is not the same as getting the volume
> level which was set earlier, on either the sample or the channel.
>
> For instance, assume that I am playing a sample which starts at low volume
> (-70dB), increases to 0dB after 5 seconds, then fades out to -70dB again.
>  If I play that sample at volume = 1.0, I would want to be able to return an
> approximation of the actual dB value at the given time.  For instance, if I
> were to query it at 0 seconds, I would get 0.000001; querying at 5 seconds
> would return 1.0; querying at 7.5 seconds would give 0.5 or something.
> Make sense?  I would want to have this controllable at the channel and / or
> sample level, not the mixer - I need to show each channel separately.  I
> don't care about linear / logarithmic conversions or anything... I
> essentially just need a number from 0 to 9 indicating very approximately how
> loud the sound is.
>
> I want this information to display semi-accurate VU / peak meter
> information, based on actual samples.  This is for my slave software for an
> electronic drum set.  Currently I show VU information based on the velocity
> of a drum pad hit, which is decent, but it would be nice to use the actual
> sample information as well.
>
> I have looked through the documentation, and I don't think it can be done,
> but I figured I may as well submit this question to the gurus on teh
> interwebs. 8-)
>
> Cheers
>