Robert, I get less delay using the Skype then using the telephone. I can telephone the USA with Skype and it is like they are in the next street, where as when using the normal telephone, there is a delay. After using the sound source from NTIS I check it with a known source . It was spot on. I am using Cable broadband, does that make a difference? Kerry Cooper Kerry Cooper Australasian Registered Piano Technician (ARPT) Brisbane Piano Centre (07)3809-0652 0412-033-379 brispiano at optushome.com.au -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Robert Scott Sent: Monday, 15 May 2006 11:39 PM To: pianotech at ptg.org Subject: RE: Online Pitch source Kerry Cooper suggested: > Download Skype (VOIP) pay 10 euro's and dial +13034997111 and it will come > through your speakers. Unfortunately this is no better than playing a WAV file on your computer. The VOIP method of accessing the telephone network introduces variable network delays that make it necessary to reassemble the sound at the receiving end according to the time-base in your computer. The pitch of the NIST tones will be distorted. The VOIP protocol uses long-term rate adjustment strategies to keep the data buffers from overrunning, but over the short term, the playback rate is not guaranteed to be the same as the recording rate. Robert Scott Ypsilanti, Michigan -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.392 / Virus Database: 268.5.6/340 - Release Date: 15/05/2006
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