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PSN File
Earthquake Sounds

Making sound files from seismic events is quite fun. I have used the free sound software Audacityto generate wave files from PSN4 earthquake files, SAC files will also work.

Method I used:

In Audacity select   <Project<Import Raw Data

navigate to the location of the *.psn files of interest and select the required one

Next, in the ‘Import Raw Data’ pane select ‘GSM 6.10’ from the first drop down list,

 then select the Sample Rate in the last drop down list, say 4kHz.

 Leave the other drop down lists at their defaults for the present then select the ‘Import’ button and the wave file will be created.

 You can experiment with all the combinations for hours

The various tabs in ‘Audacity’ allows mixing of other events or ‘Solo’

You will need to download the ‘Lame’ encoder to export your files as mp3’s

An example in mp3 format is below, this is from the Earthquake near Fiji on 18 July 2007

get free‘Audacity’ here

*click to get LAME here

2kHz Lehman Fiji EQ

 

UPDATE ********

Bob has developed his utility to “WAVEQuake” you can now convert .SAC files to .PSN then to Wave

 

WAVEQuake.zip

Bob McClure has produced an utility program,

PSN-WAVE.zip

      

   I quote his message:

“I was pretty idle today, so I put together the attached utility, which makes WAVE sound files using WinQuake TYPE4 PSN format event files as data sources. If you get around to trying it out, please give me your comments. I have only tried it out on files of an hour duration, from which I get about 2 seconds worth of sound, short but interesting to hear.

You can open any channel of a WinQuake volume file and make a WAVE file from it, but the WAVE file has the same name as the volume file. So, if you want to make WAVE files of more than one channel, be sure to rename each file after it is created in order to avoid overwrite.

The volume of the sound file is automatically adjusted to use all its dynamic range.

If there is any demand, I could add the ability to use SAC binary files as sources.

In the future, I might decide to incorporate this file conversion function into my WQFilter.exe utility, which would allow the user to experiment with filtering for best sound.

There is also the possibility of playing the sound directly from the event file, without having to prepare a sound file. Maybe that is the best option.

The WAVE format is the only sound format that I know how to create. There are other programs around for converting WAVE files to the more compact MP3 or WMA format.

Cheers,

Bob”
 

 

PSN-WAVE.zip

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email me daleh at daleh.id.au