AAC | ADPCM | Convolution | DAFx | FFT | IIR | Mixer | MP3 | MPEG | MPEG-4

Hi everybody,

I'm a student who is working in a school project; honestly I don't have to much experience with
DSP or filters. First  I want to detect the fundamental frequency of voice in an audio file. In
the second part to suppress or remove the voice of an audio file, not necessary of a song. For
example to record a conference and you want to suppress the voice of the speaker.

I know that I can use matlab to read the audio file and store it in a data file. But I don't
know if there are some functions that allow me to extract or suprime the audio.

Can anybody help me  to orient me in my project?

Thanks  and best regards
Miguel

------------------------------------

(You need to be a member of audiodsp -- send a blank email to audiodsp-subscribe@yahoogroups.com )

Hi Miguel,
Voiced speech consists of fundamental frequency + harmonics called formants=
. So a simple way to clear a majority of the speakers voice would be to rem=
ove formants in the frequency domain.=C2 =C2 =C2 This would involve using e=
ither transforms or filterbanks and then manually detecting formants and cl=
earing them. You would still be left with some amount of un-voiced speech o=
r plosives.=20
Regards,
Amit
----- Original Message ----
From: "k...@hotmail.com" <k...@hotmail.com>
To: a...@yahoogroups.com
Sent: Friday, 13 June, 2008 5:45:26 PM
Subject: [audiodsp] vocal detection and removal
Hi everybody,

I'm a student who is working in a school project; honestly I don't have to =
much experience with DSP or filters. First I want to detect the fundamental=
 frequency of voice in an audio file. In the second part to suppress or rem=
ove the voice of an audio file, not necessary of a song. For example to rec=
ord a conference and you want to suppress the voice of the speaker.

I know that I can use matlab to read the audio file and store it in a data =
file. But I don't know if there are some functions that allow me to extract=
 or suprime the audio.

Can anybody help me to orient me in my project?=20

Thanks and best regards
Miguel
=20
------------------------------------

NEW!  You can now post a message or access and search the archives of this =
group on DSPRelated.com:
http://www.dsprelated.com/groups/audiodsp/1.php

_____________________________________
Note: If you do a simple "reply" with your email client, only the author of=
 this message will receive your answer.  You need to do a "reply all" if yo=
u want your answer to be distributed to the entire group.

_____________________________________
About this discussion group:

Archives:  http://www.dsprelated.com/groups/audiodsp/1.php

To Post:  Send an email to a...@yahoogroups.com

Other DSP Related Groups: http://www.dsprelated.com/groups.phpYahoo! Groups=
 Links

(You need to be a member of audiodsp -- send a blank email to audiodsp-subscribe@yahoogroups.com )