In my school task on Psychoacoustics I have been asked to make some modifications on a given noise sample. The task is to make some 6 different modifications to the given sample keeping in mind the design parameter , POWERFUL. And when I play the different modifications I have to ask the audience on how SHARP the sound is for them. The Spl has to be same for each level. I haven’t used Audacity before , so any help is appreciated .
I am sorry I misquoted the problem. The design parameter is sharpness and I have to ask the audience of how powerful they perceive the sound is …
That is tricky before we consider anything else.
There is no way to specify or set the SPL in an audio editor. The SPL depends not only on the signal but on the playback “system” (including the playback environment) and on how SPL is being measured.
What techniques have been suggested during your coursework?
Adding filters will cause controlled effects. Changing the sampling rate may cause complex, hard to quantify damage. I think I’d stay away from that one. Changing the accuracy of digital encoding can be more or less successful depending on who’s doing the resampling. Results can range from amazingly good to a blizzard of sampling artifacts.