Hi,
I have not the ideal solution but my first impression is that the sound is saturating; your sinus becomes a scare wave and so buzz. Try to reduce the amplitude of your sinus. There is than an analogue amplifier that wills amplify your sinus. (If I remember it is 4.7 time). Also the speaker size of the e-puck is more usable for high frequency, it is not a subwoofer. Regards Bonani Michael ---------------------------------------------------------------------------- -------------- Tél : + 41 21 693 78 69 Fax : + 41 21 693 78 07 E-mail : <mailto:michael.bon...@epfl.ch> michael.bon...@epfl.ch Adress: EPFL-STI-IPR-LSRO1 MEB 3 30 Station 9 1015 Lausanne From: e-puck-user-boun...@gna.org [mailto:e-puck-user-boun...@gna.org] On Behalf Of Andy Guest Sent: Wednesday, September 16, 2009 1:02 PM To: e-puck-user@gna.org Subject: [E-puck-user] Epuck Sound Generation Hey folks, I'm trying to get my epucks to make sounds. I think I've got everything set up right except the e_const_sound.s file. I'm trying to get the pucks to generate a clear tone and what I get is, well raspy is the best word I can think of. It sounds more like a buzz than a clear tone. I'm trying to populate the e_const_sound.s file by generating a set of 7200 values based on a sine wave (to give a one second sound). I am trying to use a sine wave of frequency 400Hz across those values, converting them to q15 format. I get the raspy/buzz sound. If I increase the frequency the sound does get clearer but by the time its clear it is also painfully high pitched. So I guess I've a few questions. Is the buzz the best I can hope for at low frequencies ? If not then am I on the right track with the sine wave ? Or Am I completely wrong ? Thanks Andy
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