Tag Archives: audio

Crows along Yasugawa

On Sunday, March 18, 2018, I was cycling down the north bank of Yasugawa when I heard some noisy crows perched in nearby trees.

When I ride my touring bike, I carry a small audio recorder and microphones. For this recording I used a Sony PCM-M10 recorder and Clippy Stereo EM172 mics by FEL Communications Ltd. To mimic human hearing, a quasi-binaural sound image was made by placing the mics on either side of my bicycle handlebar bag. I prefer to use trees about the diameter of an adult human head, but I use the handlebar bag when I cannot find a tree.

Trek 520 touring bike with audio recorder and mics on handlebar bag in Yasu City

The Compass app on my iPhone shows the location, direction, and time.

Compass and geolocation app on bicycle handlebar bag in Yasu City

As we can see on the map, this location is between a river and near the edge of a suburban area. With aircraft overhead, vehicles on nearby roads, and rural and suburban human activities, this place is quite noisy, even on Sunday.

In everyday life we filter out much of the noise. When the crows are not so noisy, I suppose most people experience this environment as a peaceful and quiet little park, just as it appears in photographs.

Trek 520 touring bike in Yasu City

Trek 520 touring bike in Yasu City

New Year 2018 Field Recording

Here is a New Year’s Eve audio recording made in rural Shiga Prefecture, Japan. We can hear temple bells, traffic, trains, and other sounds. At midnight nearby fireworks and a neighbor’s firecracker announce the new year. We can also hear the rumble of fireworks in the distance.

On December 31, 2017, I scouted the location to be sure that I could set up easily at night.

Fields in Tsuji

Fields in Tsuji, Ritto City, on December 31, 2017. At midnight I recorded temple bells and fireworks here.

The Compass app on iPhone helped me point the microphone north.

Compass on iPhone and fields in Tsuji

Compass on iPhone and fields in Tsuji, Ritto City, on December 31, 2017. At midnight I recorded temple bells and fireworks here with the microphone aimed north.

At night I set up my recording gear a little before 23:30

New Year's Eve recording outdoors

New Year’s Eve recording outdoors at midnight between fields in Tsuji, Ritto City

I rode my old commuting bike to the field and parked with the headlight aimed at the tripod location. With plenty of moonlight and a clear sky, I turned off the light before recording.

Old touring bicycle outdoors at night

Old touring bicycle outdoors at mdnight between fields in Tsuji, Ritto City

After setup and testing, I recorded for about 40 minutes. I could see very well with a small headlamp.

New Year's Eve recording outdoors

New Year’s Eve recording outdoors at mdnight between fields in Tsuji, Ritto City

Frankly, I was a little disappointed with this recording. I’d expected a nearby temple bell to be more dominant, but it did not stand out as I’d hoped. I like the variety of bells that we can hear in this recording, but next year I’ll try to record closer to a temple.

Notes

  1. Recording was done with an Audio-Technica BP4025 stereo microphone and a Tascam DR-70D recorder mounted on a tripod.
  2. For post-processing I used the Audacity multitrack editor.
  3. This recording is also available on radio aporee ::: maps.

Takano Shrine on a Windy December Day

On December 12, 2017, I made a field recording at Takano Shrine in Ritto City, Shiga Prefecture, Japan (滋賀県 栗東市 高野神社). See the location on radio aporee ::: maps.

Noisy aircraft, traffic, and other human sounds nearly drown out the voices of all the birds except a nearby crow.

Inner gate and worship hall (haiden, 拝殿) of Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Wooden prayer tablets (絵馬) at the main sanctuary (本殿) of Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Wooden prayer tablets (ema, 絵馬)

Wooden prayer tablets (ema, 絵馬) that hang near the main sanctuary clatter in the strong westerly wind.

Wooden prayer tablets (絵馬) at the main sanctuary (本殿) of Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Wooden prayer tablets (絵馬) at the main sanctuary (本殿) of Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Wooden prayer tablets (絵馬) at the main sanctuary (本殿) of Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Wooden prayer tablets (絵馬) at the main sanctuary (本殿) of Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Wooden prayer tablets (絵馬) at the main sanctuary (本殿) of Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Wooden prayer tablets (絵馬) at the main sanctuary (本殿) of Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Winter birds

As the days become cooler, more and more birds appear in trees and bushes around the shrine.

Black-faced Bunting (Emberiza spodocephala, アオジ) in Takano, Rito City

Oriental Greenfinch (Chloris sinica, カワラヒワ) at Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Dusky thrush (Turdus eunomus, ツグミ) at Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Long-tailed tit (Aegithalos caudatus, エナガ) at Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Late autumn colors

A few maple trees are still showing their autumn colors.

Fall colors at Takano Park in Ritto City

Maple leaves along the entrance to Takano Shrine in Ritto City (滋賀県 栗東市 高野神社)

Technical notes

Audio was captured with an Audio-Technica BP4025 stereo microphone with a Rycote Windjammer and recorded with a Tascam DR-70D recorder. Post-processing was done with Audacity on an old Lenovo ThinkStation 20 running Fedora GNU/Linux Workstation version 27.

Sounds of cicadas at the end of summer

Along Oyamakawa in Omifuji, Yasu City, Shiga Prefecture, cicadas dominate the soundscape in summer. In mid-September, before autumnal equinox, smaller insects join the chorus.

On 2017-09-15 the cicadas were very loud as I rode my mountain bike on a path through a grove of ornamental cherry trees between a small river and a residential neighborhood (radio aporee ::: maps – Omifuji, Yasu-shi, Shiga-ken, Japan).

Araya Muddy Fox mountain bike

Araya Muddy Fox mountain bike near the path along Oyamakawa in Omifuji, Yasu City.

Audio recorder and microphones

Audio recorder and microphones on a cherry tree in the woods along Oyamakawa in Omifuji, Yasu City

A little before 13:00 I mounted a Sony PCM-M10 recorder and FEL Clippy EM172 mics on a tree trunk for quasi-binaural recording. The mics face northwest toward a busy two-lane road, Japan national route 8, with the river and farms to the right and a residential neighborhood to the left.

Audio recorder and microphones

Audio recorder and microphones on a cherry tree in the woods along Oyamakawa in Omifuji, Yasu City

We can hear cars, trucks, agricultural machinery (rice harvester), and other human sounds, but the cicadas compete well and nearly drown out the songs of smaller insects. Soon the cicadas will fall silent, and we’ll wonder how another summer passed so quickly.

Red spider lilies (lycoris radiata, 彼岸花)

Red spider lilies (lycoris radiata, 彼岸花) along an irrigation canal in Mikami, Yasu City, Mikamiyama (三上山) in the background.

Uguisu (鶯)

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.

Bike is parked in foliage along road in abandoned park in Ichimiyake, Yasu City. Audio recording of bird calls with Clippy EM172 mics and Sony PCM-M10 recorder.

Trek 520 touring bike along road in abandoned park in Ichimiyake, Yasu City

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.)

Foliage along road in abandoned park in Ichimiyake, Yasu City

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.

Foliage along road in abandoned park in Ichimiyake, Yasu City

Foliage along road in abandoned park in Ichimiyake, Yasu City

Location

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.

Trek 520 touring bike parked in foliage along road in abandoned park in Ichimiyake, Yasu City. Audio recording of bird calls with Clippy EM172 mics and Sony PCM-M10 recorder.

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.

Trek 520 touring bike parked in foliage along road in abandoned park in Ichimiyake, Yasu City. Audio recording of bird calls with Clippy EM172 mics and Sony PCM-M10 recorder.

Trek 520 touring bike parked in foliage along road in abandoned park in Ichimiyake, Yasu City. Audio recording of bird calls with Clippy EM172 mics and Sony PCM-M10 recorder.

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.