Thanks for your support ! Your explanations are clear (I did not think in term of energy carried by the signal but eventually it seems so obvious... let's go for a first start with a square wave) ("ça tombe sous le sens !") and I'll have a look at the links you gave me (PD beginner, I have to get involved in audio processing as well). As for the word "buzzer", we use it to design, yes CK, a big flashy button that you squeeze the more violently you can or... a little loudspeaker. I was talking about the little loudspeaker. At least, it seems that using a "foreigner word" in your native tongue is as hazardous than exporting a .pat to a .pd... Have a nice day touti
Message du 10/11/04 à 16h49 De : "Roman Haefeli" A : tboulanger@voila.fr, "pd-list@iem.at" Copie à : Objet : Re: [PD] perception of sound hi
" schrieb:
Hi list !
It seems for many people that the alarm level is not enough strong, even at full blast so here's my question : do you know if there are some rules that make a sound appear more strong than another at an identic level ?
the crest-factor decribes the energy of the sound in relation to its amplitude. the waveform with the highest crest-factor is a squarewave (imagine: the positon of the membrane of the loudspeaker is always at maximum position). using a square should result in the maximum loudness at a specific amplitude. our is ear is the most sensitive in the area between 1 to 4kHz (as chris and derek already mentioned).
another approach: what about making the beep-sound of your buzzer pulse? noises without constant amplitudes seem to get more attention.
roman
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