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.




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



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

  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 ?



E-puck-user mailing list

Reply via email to