Jay Fenton
06-19-2007, 01:47 PM
Hi,
I've been trying to find the most optimal algorithm to detect a
sustained burst of
tone at an unknown (but higher than speech) frequency in realtime, for
use in
voicemail detection (think long beep). I don't have much experience in
the signal
processing realms, and would appreciate any appropriate pointers.
Am I right in thinking that Goertzel is only suited to the detection
of a known
frequency, and not a range? What's the most performant way of doing
this?
Thanks in advance.
--
Regards,
Jay Fenton
I've been trying to find the most optimal algorithm to detect a
sustained burst of
tone at an unknown (but higher than speech) frequency in realtime, for
use in
voicemail detection (think long beep). I don't have much experience in
the signal
processing realms, and would appreciate any appropriate pointers.
Am I right in thinking that Goertzel is only suited to the detection
of a known
frequency, and not a range? What's the most performant way of doing
this?
Thanks in advance.
--
Regards,
Jay Fenton