http://tech.groups.yahoo.com/group/naturerecordists/ E-Mail group of individuals interested in recording natural sounds. Wed, 09 Jul 2008 04:42:53 GMT Rob Danielson http://tech.groups.yahoo.com/group/naturerecordists/message/33789 http://tech.groups.yahoo.com/group/naturerecordists/message/33789 Hi Vicky-- Thanks for the carefully confirmed findings. I'm sure those with LS-10's are following along closely. Is there a chance you could share short clips Wed, 09 Jul 2008 04:42:52 GMT Rob Danielson http://tech.groups.yahoo.com/group/naturerecordists/message/33788 http://tech.groups.yahoo.com/group/naturerecordists/message/33788 Hi Don-- I'm just starting to learn about nocturnal mammal behaviors. What is puzzling me about your recording is I think that one raccoon may be making most Wed, 09 Jul 2008 00:52:46 GMT Vicki Powys http://tech.groups.yahoo.com/group/naturerecordists/message/33787 http://tech.groups.yahoo.com/group/naturerecordists/message/33787 Rob & Raimund, With the ME67 and LS-10 recorder, I've now tried comparing volume 3 and volume 4 at high sensitivity setting, against volume 10 at low Tue, 08 Jul 2008 20:43:53 GMT oryoki2000 http://tech.groups.yahoo.com/group/naturerecordists/message/33786 http://tech.groups.yahoo.com/group/naturerecordists/message/33786 If you're not interested in wildlife photography, please skip this message. The Photo Trap is an infrared triggering mechanism that helps you capture photos of Tue, 08 Jul 2008 18:24:31 GMT Don Lloyd http://tech.groups.yahoo.com/group/naturerecordists/message/33785 http://tech.groups.yahoo.com/group/naturerecordists/message/33785 Setting up to record a pair of Great-horned owls that often visit around midnight and got this thing instead. I've heard raccoons make a growl-like sound, but Tue, 08 Jul 2008 18:19:42 GMT http://tech.groups.yahoo.com/group/naturerecordists/message/33784 http://tech.groups.yahoo.com/group/naturerecordists/message/33784 Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the naturerecordists group. File : Tue, 08 Jul 2008 15:49:14 GMT John Hartog http://tech.groups.yahoo.com/group/naturerecordists/message/33783 http://tech.groups.yahoo.com/group/naturerecordists/message/33783 Hi Andrew, My oystercatcher recording is now up on my website. I posted a narrative to introduce it on the non-tech side of our group: Tue, 08 Jul 2008 15:07:41 GMT Raimund Specht http://tech.groups.yahoo.com/group/naturerecordists/message/33782 http://tech.groups.yahoo.com/group/naturerecordists/message/33782 Rob, Just another thought: The LS-10 probably employs a dithering algorithm when the 16 bit resolution is selected. This would further increase the measured Tue, 08 Jul 2008 14:43:30 GMT Raimund Specht http://tech.groups.yahoo.com/group/naturerecordists/message/33781 http://tech.groups.yahoo.com/group/naturerecordists/message/33781 ... Rob, Oops, my most recent post was obviously not the correct answer to your question. The correct calculation should be as follows: The full-scale level at Tue, 08 Jul 2008 14:27:56 GMT Raimund Specht http://tech.groups.yahoo.com/group/naturerecordists/message/33780 http://tech.groups.yahoo.com/group/naturerecordists/message/33780 ... Yes, this is absolutely true. The full-scale level at the REC LEVEL setting 10 (and MIC SENSE set to LOW) is -30 dBu. So, your (probably very safe) -60 dB Tue, 08 Jul 2008 13:39:35 GMT Rob Danielson http://tech.groups.yahoo.com/group/naturerecordists/message/33779 http://tech.groups.yahoo.com/group/naturerecordists/message/33779 ... Hi Raimund-- Just want to be sure about the source of the noise. When I tested 16 bit quantizing noise pretty carefully a while back, the background level Tue, 08 Jul 2008 07:24:39 GMT Raimund Specht http://tech.groups.yahoo.com/group/naturerecordists/message/33778 http://tech.groups.yahoo.com/group/naturerecordists/message/33778 ... Hi Rob, The problem with the LOW sensitivity setting (low gain) in conjunction with the 16 bit format is that the quantisation noise is obviously not fully Tue, 08 Jul 2008 07:11:43 GMT Raimund Specht http://tech.groups.yahoo.com/group/naturerecordists/message/33777 http://tech.groups.yahoo.com/group/naturerecordists/message/33777 ... Yes, the reduced noise benefit should be retained if you apply a digital gain to the 24 bit recording prior to converting it to 16 bits. The simplest way Mon, 07 Jul 2008 23:51:56 GMT Rob Danielson http://tech.groups.yahoo.com/group/naturerecordists/message/33776 http://tech.groups.yahoo.com/group/naturerecordists/message/33776 Hi Raimund-- That's interesting. Input noise that low in the frequency spectrum might be accounting for some of the perceived boost in the lower mid-range Mon, 07 Jul 2008 21:57:59 GMT Vicki Powys http://tech.groups.yahoo.com/group/naturerecordists/message/33775 http://tech.groups.yahoo.com/group/naturerecordists/message/33775 Rob, Your rule of thumb (below) should work OK, although I haven't actually tested 4 low vs 10 high. And now Raimund has suggested differences in noise using