On June 4, 2017, a quiet Sunday, I took a bike ride in Yasu City, Shiga Prefecture, Japan. On the way home I heard a Japanese bush warbler (uguisu, ウグイス, or 鶯).
I always carry a small audio recorder and a pair of Primo EM172 mics in my touring bike handlebar bag. The bird began was sing loudly as I rode into a wooded area, so I quickly leaned my bike against a small tree, attached the mics, and began to record.
The uguisu (Japanese bush warbler) remained in dense foliage, and I never saw any of the birds we hear in this recording. (The photo at the top was taken in 2016.)
This area was once a park. On weekdays dump trucks haul dirt and gravel nearby along the riverbank, but on weekends it’s very quiet, a nice place for leisurely cycling.
The Compass app on my phone shows the direction and location of the stereo recording, but it is not accurate. The mics were aimed south, but the city is Yasu, not Moriyama, and maps coordinates were off by several hundred meters. An annotated paper map or an online map with a satellite image would be more accurate and useful.
This shows the location within the abandoned park.
Recording and post-processing
This method of quasi-binaural recording attempts to emulate human perception by placing the left and right mics on either side of a bicycle handlebar bag. It is not ideal, of course, but setup can be done very quickly. This recording was made with a Sony PCM-M10 recorder and FEL Communications Clippy Stereo EM172 Microphone.
Audio post-processing was done with Audacity on Fedora Workstation, a GNU/Linux system running on a Lenovo ThinkStation 20 computer. I trimmed the recording from more than 20 minutes to 5:19 and normalized the gain. I did not add any filters, EQ, or compression.
This recording is also available on radio aproree ::: maps – sounds of the world.