Nightmigrants.com 

HomeBird picsRecorded CallsEquipment & TechniquesContact MeLinks

Initial Recording Method

  

My original method is outlined further below, but I don't use the DetectEar 2000 Parabolic Microphone/Sony Hi-MD Recorder combo much anymore.

  

See most recent methods page

  

  

My Original Recording Method pre 2008

  

Below I have tried to present, in step by step fashion, my method of recording the night sky and finding and identifying avian calls.

Record night sky using DetectEar 2000 Parabolic Microphone connected via a 6 ft "male to male end" mono mini jack audio cable to a Sony MiniDisc Digital Audio Recorder (Model MZRH10) loaded with a 1 Giga Byte disc.

Minidisc recorder set to record in 1 hr. increments in Hi-SP Mode in manual record input level set at 29. I use 1 gigabyte Hi-MD discs which gives 7 hrs, 56 mins of recording time in HI-SP Mode.

Set Sonic Stage to save transferred files in 64 Kbps .wav format

Transfer and convert recorded sound data from Minidisc recorder to computer using software program called Sonic Stage (comes w/ Sony MiniDisc Recorder).

Open each 1 hr. soundfile in Ravenlite and scan the spectrogram minute by minute for bird calls.

During the busy call season (mid-April thru May and Sept thru early Oct open 1 hr. soundfile in Wavepad and convert from 64,000 Kbps .Wav file to 22,050 khz, 16 bit mono, PCM (.wav) file and **save in My Recording folder as Soundfile.wav.

OR

Find and save interesting calls as desired. Make spectrograms with either Ravenlite or SyrinxPC.

**Open Tseep-X, Thrush-X, and Dick-X  to scan Soundfile.wav for avian calls.

**Analyze Tseep-X, Thrush-X, and Dick-X  results using GlassOfire.

If desired, reopen original 1 hr. soundfile in Ravenlite to get a better look at calls found by GlassOfire or to search for low frequency calls (herons, cuckoos, etc.) missed by Tseep-X, Thrush-X, and Dick-X. Individual calls can also be viewed with SyrinxPC.

Time to have some fun and do some detective work. Use the Evans/O'Brien Flight Calls of Migratory Birds CD, your ears, the Stokes Guide to Birdsong CDs and other bird call and song resources to identify the calls you recorded. Some you will be able to ID, some you will not.

** detailed instructions for these steps can be found on the Old Bird, Inc. website.

martinap2@verizon.net