RE: Recording equipment for student
Dear Pawel, The frequency response for the MicroTrack 24/96 is known. Both Gianni Pavan and I have posted it on this list. Please see http://www.unipv.it/cibra/res_techtest_uk.html and www.cetaceanresearch.com/M-Audio_MicroTrack_24-96_Freq_Response.pdf for details. Joe Olson ~~~ Joseph R. Olson Cetacean Research Technology PO Box 70186 Seattle, WA 98127 Sales: 206-297-1310 877-824-5432 (outside the Seattle local calling area) Customer Support: 206-973-7979 United Kingdom: 020-7193-7965 FAX: 206-784-0557 Mobile: 206-650-8676 [EMAIL PROTECTED] www.cetaceanresearch.com Cetacean Research Technology is a strategic partner of: Sound Technology, Inc. Spectra Group - Signal Analysis Division and Sensor Technology, Ltd. Marine Mammal and Bioacoustics Division -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Pawel Kusmierek Sent: Monday, 19 June 2006 3:55 PM To: BIOACOUSTICS-L@cornell.edu Subject: Re: Recording equipment for student AFAIR R-1 does not allow ultrasonic recording. R-4 does, but it's much more expensive. The new Tascam HD-P2 records at 24/96 kHz but it's quite expensive, and despite 96 kHz converters, the published frequency response is not very impressive. Another option is Marantz PMD-671, though some people have complained about noisy mic preamps. M-Audio MicroTrack 2496 is cheap and records at 96 kHz, but the frequency response in unknown. M-Audio did not publish it. Also, be advised that this unit suffered from numerous flaws - Google for it. Some might have been corrected by software updates, others most certainly not: like substandard Phantom Power voltage. Pawel [EMAIL PROTECTED] David Flores wrote: I am curious if anyone could recommend some field recording equipment, digital disc recorder, for an individual interested in bioacoustics? The Edirol R-1 model? I am looking for something affordable for a student, certainly less than $1000. A sampling rate allowing for recording of ultrasound is desirable. I have experience field recording with a minidisc recorder for non-scientific purposes, and I am getting ready to pursue some undergraduate research in bioacoustics. Thanks, David [EMAIL PROTECTED] -- Pawel Kusmierek PhD Department of Physiology and Biophysics Georgetown University Medical Center The Research Building WP23 3970 Reservoir Road NW Washington, DC 20007 phone: +1 202 687-8851
Marine Mammal Science Articles
Marine Mammal Science Volume 22 Issue 3 July 2006 ARTICLES Mann, David A., O'Shea, Thomas J. Nowacek, Douglas P. (2006) NONLINEAR DYNAMICS IN MANATEE VOCALIZATIONS. Marine Mammal Science 22 (3), 548-555 NOTES Aguilar Soto, Natacha, Johnson, Mark, Madsen, Peter T., Tyack, Peter L., Bocconcelli, Alessandro Fabrizio Borsani, J. (2006) DOES INTENSE SHIP NOISE DISRUPT FORAGING IN DEEP-DIVING CUVIER'S BEAKED WHALES (ZIPHIUS CAVIROSTRIS)?. Marine Mammal Science 22 (3), 690-699 Rankin, Shannon, Barlow, Jay Stafford, Kathleen M. (2006) BLUE WHALE (BALAENOPTERA MUSCULUS) SIGHTINGS AND RECORDINGS SOUTH OF THE ALEUTIAN ISLANDS. Marine Mammal Science 22 (3), 708-713 Please contact the journal website or the authors for reprints. Cheers ___ Jason Gedamke, PhD Applied Marine Mammal Ecology Southern Ocean Ecosystems Program Australian Antarctic Division Channel Highway, Kingston Tasmania 7050 Australia ph: 61-3-6232-3153 FAX: 61-3-6232-3449
Re: Recording equipment for student
Edirol R1 is limited to 44.1 kHz sampling; the same limit applies to all minidisc (MD) recorders. Other cheap solid state recorders go up to 96 kHz sampling, but the frequency response in the upper range must be verified. MAudio MT2496 is okay for frequency range but a bit noisy (high output mics are required to overcome this problem) and with a poor phantom powering limited to 32 V (many mics work ok, others may not). To get at least 80 kHz bandwidth, you need 192 kHz sampling, which is available in a few portable recorders, but response is not necessarily extended as one might want: Sound Devices 722 (the response falls smoothly above 60 kHz, -6 dB at 80 kHz, -10 dB at 92 kHz) Fostex FR2 (flat up to 92 kHz) Tascam HDP2 (Joe Olson reported recently that its response falls down to -20 at 80 kHz) Another viable solution is to use a laptop with a suitable audio interface. To get 90 kHz bandwidth I could suggest the MOTU Traveler (4 mic in with P48, 4 line in, low noise, FireWire interface, external DC powering) that costs less than $1000. To learn more about frequency response and anti-aliasing features (that affect the usable bandwidth) of some recorders and audio interfaces visit our web page at http://www.unipv.it/cibra/res_techtest_uk.html Gianni [EMAIL PROTECTED] At 05.44 17/06/2006, you wrote: I am curious if anyone could recommend some field recording equipment, digital disc recorder, for an individual interested in bioacoustics? The Edirol R-1 model? I am looking for something affordable for a student, certainly less than $1000. A sampling rate allowing for recording of ultrasound is desirable. I have experience field recording with a minidisc recorder for non-scientific purposes, and I am getting ready to pursue some undergraduate research in bioacoustics. Thanks, David [EMAIL PROTECTED] -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.1.394 / Virus Database: 268.9.0/366 - Release Date: 15/06/2006 -- Gianni Pavan Email [EMAIL PROTECTED] Centro Interdisciplinare di Bioacustica e Ricerche Ambientali Universita' degli Studi di Pavia Via Taramelli 24, 27100 PAVIA, ITALIA Tel +39-0382-987874 Fax+39-02-700-32921 Web http://www.unipv.it/cibra -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.1.394 / Virus Database: 268.9.2/370 - Release Date: 20/06/2006
Bioacoustics articles in Condor, May 2006
Condor, Volume 108(2), May 2006 THE DUET CODE OF THE FEMALE BLACK-BELLIED WREN Logue, David M. SINGING OF HERMIT WARBLERS: DIALECTS OF TYPE I SONGS Janes, Stewart W.; Ryker, Lee Abstracts: THE DUET CODE OF THE FEMALE BLACK-BELLIED WREN Logue, David M. In many duet-singing songbirds, paired birds combine their song types nonrandomly to form duet songs. Several different behavioral mechanisms could generate nonrandom song type associations in duets. I tested female Black-bellied Wrens (Thryothorus fasciatoventris) for one such mechanism: adherence to a set of rules linking female response songs to male stimulus songs. I call this set of rules a duet code. Duets of free-living Black-bellied Wrens were recorded in 2001 and 2002. In 2003 I returned to the same territories and played the male song types from the recorded duets. Females answered male song stimuli as if duetting with the playback speaker. Although the known repertoires of females averaged 8.4 song types, each female sang only a single song type in response to each male song type. Random answering could not account for this pattern, supporting the hypothesis that females abide by duet codes. Females that were still paired with their mates from 2001-2002 answered 100% of their mate's songs with the same song types they had used previously, demonstrating that codes are stable over time. In contrast, females that were new to a territory answered an average of only 18% of their mate's song types with the same song type as the previous female, indicating that duet codes are individually distinctive. Duet participation by female Black-bellied Wrens represents a special kind of animal communication, in which discrete vocal signals consistently elicit discrete vocal responses according to an individually distinctive set of rules. SINGING OF HERMIT WARBLERS: DIALECTS OF TYPE I SONGS Janes, Stewart W.; Ryker, Lee Hermit Warblers (Dendroica occidentalis) sing distinct dialects of type I songs, the most common song before pairing. Eight dialects were identified and described in a 22 900 km2 area in southwestern Oregon and northern California. The dialects were well defined geographically with contact areas between dialects seldom extending more than 6 km. Gaps in forested habitat of = 10 km separated several dialects, but within forested areas dialect boundaries did not conform to obvious habitat, elevation, or geographic boundaries. Few songs containing syllables or phrases from more than one dialect were identified, and birds incorporating elements from two different dialects inhabited areas close to the common boundary between the two. Multivariate analysis showed that birds in neighboring areas had dialects most similar in structure, but a more complex history of dialect development or origin is suggested in other areas.
