Re: [SoX-users] Problem obtaining frequent RMS measurements

[Aaron \Caustik\ R. <ca...@gm...>]

I'll donate $100 to you if you can look at this issue.

On Wed, Apr 21, 2010 at 7:50 AM, Aaron "Caustik" Robinson <ca...@gm...
> wrote:

> I'm attempting to split an input audio file into 3 bands, and measure the
> RMS for each band at 50ms intervals.
>
> Seems easy enough with the filters sox provides, however for some reason I
> can't seem to actually get 50ms resolution. I get about half of that
> (~100ms). Here's the calls I'm making:
>
> ./sox decoded.wav -n lowpass 500 stats trim 0 0.05 : restart 2>
> low-stats.txt
> ./sox decoded.wav -n bandpass 1000 1000 stats trim 0 0.05 : restart 2>
> mid-stats.txt
> ./sox decoded.wav -n highpass 2000 stats trim 0 0.05 : restart 2>
> high-stats.txt
>
> The window for 'stats' is quoted as 50ms. I attempt to send trim to 50ms,
> and use restart to force stats to frequently spew it's data.
>
> Is there something I'm doing wrong here? Is there a better way to pull this
> off?
>
> caustik
>
>