Displaying 2 results from an estimated 2 matches for "40hz".
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30hz
2005 Feb 20
0
Traditional Ringback Tone
...sk to emulate the sounds of the earlier
telephone systems, and the settings in [us-old] are pretty helpful. The
only thing lacking is ringback tone, which is not quite as complex as
the real phone systems of the day. For example, it is true that a
ringback tone commonly used is 420Hz modulated by 40Hz. This is what
shows up in [us-old]. But that modulated tone was generally overlaid on
top of real ringing, i.e. 20Hz. So, using the Asterisk example of
420*40, it would seem that a decent ringback would be (420*40)*20. But,
of course, that doesn't appear to exist. If it does, I am missing...
2009 Mar 04
3
Silk for Free
http://www.pcworld.com/article/160653/skype_gives_away_highquality_audio
_codec.html?tk=rss_news
any thoughts?
Regards,
Dean Collins
Cognation Inc
dean at cognation.net
<mailto:dean at cognation.net> +1-212-203-4357 New York
+61-2-9016-5642 (Sydney in-dial).
+44-20-3129-6001 (London in-dial).
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