Acousonde Announcements

Acousonde now samples at 232 and 464 kHz

Wed, 08 Feb 2012 05:34:00 GMT

Dear Friends & Colleagues, New firmware has brought the Acousonde underwater sound recorder to its latest milestone, enabling the hardware to sample acoustics at 232 kHz as originally designed. Newer units with this firmware, using fast storage cards, have sustained sample rates of 464 kHz. The new capability results from shifting the majority of the sampling effort to a hardware coprocessor built into every Acousonde. Reliance on the coprocessor not only allows faster sample rates, it also reduces power consumption by up to a half, enabling the Acousonde to record longer given sufficient storage capacity. At the 464-kHz sample rate, a standard A-cell lithium battery can provide enough power to fill or nearly fill the Acousonde 3A's maximum 128 GB of onboard storage. Details at <a href="http://www.acousonde.com/news.html">http://www.acousonde.com/news.html</a> Release notes at <a href="http://www.acousonde.com/releasenotes.html">http://www.acousonde.com/releasenotes.html</a> Thanks for your interest! Best regards, --Bill Burgess, Greeneridge Sciences, Inc. <hr/> You are subscribed to this list... Acousonde Announcements ...using the following email... <a href="mailto:example@example.com">example@example.com</a> ...because of your interest in the Acousonde or in its predecessor, the Bioacoustic Probe. You may unsubscribe from this list at any time by visiting the following URL: <a href="http://www.acousonde.com/mail/mail.cgi/u/announcements/example/example.com/">http://www.acousonde.com/mail/mail.cgi/u/announcements/example/example.com/</a> If the above URL is inoperable, make sure that you have copied the entire address. Some mail readers will wrap a long URL and thus break this automatic unsubscribe mechanism. Mailing List Powered by Dada Mail <a href="http://www.acousonde.com/mail/mail.cgi/what_is_dada_mail/">http://www.acousonde.com/mail/mail.cgi/what_is_dada_mail/</a>

First deployment of Acousonde 3B

Thu, 19 May 2011 18:05:00 GMT

Dear Friends and Colleagues, Last week the Acousonde 3B hydrodynamic acoustic recording tag saw its first deployment. It was attached with suction cups to a pantropical spotted dolphin off the west coast of the Big Island of Hawai`i, and remained attached for 12 hours 18 minutes. Details and photographs are available at: <a href="http://www.acousonde.com/news.html">http://www.acousonde.com/news.html</a> The 3B was designed from the beginning with hopes of application to small odontocetes. It is a tremendous pleasure (and relief) to see these hopes realized! Thanks to Cascadia Research for their experienced, professional work attaching and retrieving the tag, and to the Office of Naval Research for their support. Best regards, --Bill Burgess, Greeneridge Sciences, Inc. <hr/> You are subscribed to this list... Acousonde Announcements ...using the following email... <a href="mailto:example@example.com">example@example.com</a> ...because of your interest in the Acousonde or in its predecessor, the Bioacoustic Probe. You may unsubscribe from this list at any time by visiting the following URL: <a href="http://www.acousonde.com/mail/mail.cgi/u/announcements/example/example.com/">http://www.acousonde.com/mail/mail.cgi/u/announcements/example/example.com/</a> If the above URL is inoperable, make sure that you have copied the entire address. Some mail readers will wrap a long URL and thus break this automatic unsubscribe mechanism. Mailing List Powered by Dada Mail <a href="http://www.acousonde.com/mail/mail.cgi/what_is_dada_mail/">http://www.acousonde.com/mail/mail.cgi/what_is_dada_mail/</a>

Acousonde 3B

Wed, 19 Jan 2011 04:27:00 GMT

Dear friends and colleagues, It is a pleasure to announce that the Acousonde(TM) 3B marine acoustic recording tag is now shipping! The Acousonde 3B is a complete mechanical redesign of its cylindrical sibling, the Acousonde 3A, specifically for application as a cetacean tag. The 3B's electronics, suction cups, and flotation form a single, low-profile, hydrodynamic package that should remain attached for longer periods and with lower flow noise than the 3A and its predecessor the Bioacoustic Probe. The 3B has yet to see its first subject, so as the community gains experience with this tool we will surely have ideas on refining the design. We particularly welcome thoughts on how to improve the suction cups; these are field-replaceable and alternative designs may easily be tested. There is at present no explicit release mechanism, but space has been reserved in the mechanical design and we hope to implement release technology in the future. The web site at <a href="http://www.acousonde.com">http://www.acousonde.com</a> has been updated with: photographs of the 3B at <a href="http://www.acousonde.com/news.html">http://www.acousonde.com/news.html</a> a one-page brochure at <a href="http://www.acousonde.com/downloads/Acousonde3B_Brochure.pdf">http://www.acousonde.com/downloads/Acousonde3B_Brochure.pdf</a> and a mechanical diagram for permitting information at <a href="http://www.acousonde.com/downloads/3Bdiagram.pdf">http://www.acousonde.com/downloads/3Bdiagram.pdf</a> Thank you all so much for your past support of the Bioacoustic Probe and the Acousonde 3A. Thanks especially to the United States Office of Naval Research that made this whole project possible. Best wishes, -- Bill Burgess, Greeneridge Sciences, Inc. <hr/> You are subscribed to this list... Acousonde Announcements ...using the following email... <a href="mailto:example@example.com">example@example.com</a> ...because of your interest in the Acousonde or in its predecessor, the Bioacoustic Probe. You may unsubscribe from this list at any time by visiting the following URL: <a href="http://www.acousonde.com/mail/mail.cgi/u/announcements/example/example.com/">http://www.acousonde.com/mail/mail.cgi/u/announcements/example/example.com/</a> If the above URL is inoperable, make sure that you have copied the entire address. Some mail readers will wrap a long URL and thus break this automatic unsubscribe mechanism. Mailing List Powered by Dada Mail <a href="http://www.acousonde.com/mail/mail.cgi/what_is_dada_mail/">http://www.acousonde.com/mail/mail.cgi/what_is_dada_mail/</a>

Acousonde Announcements Message

Sun, 15 Aug 2010 22:55:00 GMT

Dear friends and colleagues, Development of the Acousonde miniature marine acoustic recorder reached two milestones this month. First, all planned functionality has finally been incorporated in the software operating system. Of particular interest to the animal-tag community is the recording of "auxiliary" channels: pressure, temperature, 3D acceleration, and 3D compass. Others will welcome the ability to record on a timed duty cycle to extend deployment life. The work isn't done; performance improvements remain, for example raising the current maximum 116-kHz acoustic sample rate to 232 kHz (high-frequency channel only) and the maximum auxiliary rate from 20 Hz to 40 Hz. But all originally-intended functionality is now in place. Second, we have finished designing and begun fabricating the first units of the dedicated animal-tag "Acousonde 3B". The 3B is a complete mechanical redesign of the Acousonde to integrate attachment and flotation with the tag, rather than requiring the user to add them after procurement. By designing the tag, attachment and flotation together we have made the overall package much smaller and more hydrodynamic than in the past. Greeneridge Sciences president Charles Greene has brought a mockup of the Acousonde 3B to the second annual conference on the Effects of Noise on Aquatic Life in Cork, Ireland, where Greeneridge has a booth. If you are attending as well, please ask him to show it to you! Best wishes, --Bill Burgess <a href="http://www.acousonde.com">http://www.acousonde.com</a> <hr/> You are subscribed to this list -- Acousonde Announcements -- using the following email -- <a href="mailto:example@example.com">example@example.com</a> -- because of your interest in the Acousonde or in its predecessor, the Bioacoustic Probe. You may unsubscribe from this list at any time by visiting the following URL: <a href="http://www.acousonde.com/mail/mail.cgi/u/announcements/example/example.com/">http://www.acousonde.com/mail/mail.cgi/u/announcements/example/example.com/</a> If the above URL is inoperable, make sure that you have copied the entire address. Some mail readers will wrap a long URL and thus break this automatic unsubscribe mechanism. Mailing List Powered by Dada Mail <a href="http://www.acousonde.com/mail/mail.cgi/what_is_dada_mail/">http://www.acousonde.com/mail/mail.cgi/what_is_dada_mail/</a>=