recorded with Sony PCM-M10 and EM172 binaural pair.
Location, Union Pacific switching yard, Martinez, CA

20131005 amtrak san joaquin passing through Martinez yard

recorded with Sony PCM-M10 and Primo EM172 binaural pair
Location, Union Pacific switch yard, Martinez, CA, about daybreak

20131007 Union Pacific Six Engines In Martinez Yard

Recorded with Sony PCM-M10 and two Primo EM172 capsules in a binaural pair.  Location: Union Pacific switch yard, Martinez, CA, about daybreak.

20131005 Amtrak Coast Starlight Passing Through Martinez Yard

Please pardon the traffic noise in the background; this is as quiet as it gets in the back yard of our tract home.

About this time of year, the male Mockingbirds arrive and have a penchant for singing right through the night as they establish territories.  By the time nesting starts, they are a lot quieter.

This bird was so obnoxiously loud, at 1:30 a.m. that I just had to record him.  Sony PCM-M10, internal mics, through an open window into the back yard.  Note the bullfrog imitations at the very end.

Mad Midnight Mocker

Generated in Adobe Audition.

For George, who was complaining about the upstairs neighbor in his ancient concominium, who was plaing his stereo loudly around the clock.  I suggested a low frequency counterattack that might get the neighbor's attention.

This was an attempt to supply a signal for his subwoofer.  The counterattack was never implemented.

Infrasonic Sweep 02

Marko is a one year old, neutered male cat. Big and black, 14 lbs of muscle and bone. 
Recorder: Sony PCM-M10, internal mics.
Mics on high sensitivity, manual level control, no bass cut.
Recorder was handheld, about 2 inches in front of his nose.  

130507 01 marko purring

Location N 37.989373 W 121.809022
Community Warning Siren monthly test, 6/5/2013

Recorded with a Sony PCM-M10 and a binaural pair of Primo EM172 electret capsules.

The siren is an American Signal C125, fifty horsepower mechanical siren, rated at 125dB at a distance of 100 ft.  This recording was made from a distance of 100 meters.  

Its is part of the Contra Costa County Community Warning System.  The most likely disaster screnario would be to warn residents in the even of a toxic gas release from any one of six refineries that operate in this region of the San Francisco Bay Area. This recordong was made durinng one of the monthly test activations of the system.

20130605 siren test

recorder: Sony PCM-M10,    
external binaural microphones: Primo EM172 capsules spaced 22 inches apart on a table top tripod, 3" polyether ball windscreens.  

The microphone tripod was perched on a brick seating ledge up against the station, a foot away from a brick wall, about 30 ft away from the tracks.

The Coast Starlight is an exceptionally large passenger train with more than ten cars and two locomotives.

130608 03 Amtrak #11 Coast Starlight arrival

recorder: Sony PCM-M10,    
external binaural microphones: Primo EM172 capsules spaced 22 inches apart on a table top tripod, 3" polyether ball windscreens.  

Microphone tripod was perched on a brick seating ledge up against the station a foot away from a brick wall, about 30 ft away from the tracks.

Amtrak Capitol Corridor trains are usually 4-5 cars with one locomotive, designed for commuting between the SF Bay Area and Sacramento.  Stops are usually quite brief.

130608 04 Amtrak #720 Capitol Corridor complete

recorder: Sony PCM-M10,    
external binaural microphones: Primo EM172 capsules spaced 22 inches apart on a table top tripod, 3" polyether ball windscreens.  

Microphone tripod was perched on a brick seating ledge up against the station a foot away from a brick wall, about 30 ft away from the tracks.

The Amtrak San Joaquin trains are usually 4-5 cars and one locomotive, routed for commuters between the SF bay area and Fresno.  Stops are usually quite brief.

grickerd

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