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Re: Equal loudness contour filter

Check replaygain, they also provide some matlab code.


As far as I know the "Group waveform normalize" function in adobe
audition does a similar thing. 


On Wed, 2011-01-19 at 02:21 +0100, Imran Dhamani wrote:
> Dear List,
>               Happy New Year to all. I am designing a test in which
> there are pure-tones stringed together with each other in the range of
> 100-500 Hz (15 logarithmic steps). The reference tone is always 100 Hz
> and the variable tone is in the specified range. My main intention is
> to assess the perception of the pattern/rhythm of these sequences
> based on just the pitch/frequency cues but the difficulty that i have
> is there are additional loudness cues involved as i am dealing with a
> range of different frequencies. As i am designing this test for
> children it will be very difficult for me to do a loudness balance
> task to equalize loudness. I was wondering if there is a possibility
> that i can use a equal loudness contour based filter to filter the
> tones as to equalize the loudness. It will be a great help if i anyone
> can share any information or if can get such a filter.
> Thanks in anticipation,
> Regards,
> Imran Dhamani
> PhD. student
> Macquarie University,
> Australia.
> $$$$$ monty@@@@