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  • Building SoundHide Day 2 | Mike Challis
    giving a horrible echo which I could have predicted if I had thought about it So we decided the straw would go inside the roof held in place by material which would deaden the space and reduce the outside noise The plywood on the roof now had to be extended to cover the bales completely and given some protection to the elements More plywood was got from Atlantic in Earsham

    Original URL path: http://www.mikechallis.com/wordpress/building-soundhide-day-2/ (2016-02-11)
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  • Building SoundHide Day 1 | Mike Challis
    Trail Waveney and Blyth Arts The Hide will house a sound installation of the wildlife recordings made at the site over the last 6 months We had a fantastic day Perfect weather The walls went up by lunchtime and then we had to fit the roof This was much slower First we installed the pole and set a Land Rover rim onto it The rafters were fed into this and

    Original URL path: http://www.mikechallis.com/wordpress/building-soundhide-day-1/ (2016-02-11)
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  • mike challis | Mike Challis | Page 2
    proved too unrelyable and we settle for pressing buttons as the interactive part Recording Bats Posted on 11th July 2015 by mike challis I went to the River Waveney Study Centre on 10 July and met Bill Landells and Sue Hooton of the Suffolk Bat Group doing a Bat Conservation workshop on recognising and counting mainly Daubenton bats along the rivers During the practical part of the session out on the river at the centre I managed to get some recordings of Pipistrelle Noctule and Daubenton bats This was fantastic I was using a heterodyne detector that tunes into the high frequency sounds the bats make and translates them into audible frequencies that we can hear My basic Magenta detector was a bit hissy but I was pleased to capture these sounds of the high frequency patterns If you want to find out more go to the Bat Conservation Trust Stridulating Waterboatmen Posted on 15th June 2015 by mike challis Well I dropped the hydrophones into the lake from the bridge and struck gold Stridulating Water boatmen Like crickets and grasshoppers Water boatmen rub parts of their body together and make sound It s for the same reason that birds sing Territory and sex My friend Lee Patterson tells me they are probably Corixa waterboatmen http www mikechallis com wordpress wp content uploads 2015 07 Stridulation for SoundHide mp3 Glorious dawn chorus in May Posted on 25th May 2015 by mike challis Had a fantastic evening night and morning at the River Waveney Study Centre I went out and recorded spot sounds with Parabolic first It sounded like someone was having a party up the road and then I realised the music in the low frequency was coming from the Norwich Radio 1 Big Weekend fest Fortunately the music stopped at 23 00 and anyway the bat detector was working at high frequencies anyway Got some recordings of Pipistrelles out on the river After a bit of sleep I was up at 3 to record dawn chorus Traffic was much better occasional vehicles but lots of clean recording I did a double Mid Side dawn chorus recording with my lovely Schoeps setup and also took some parabolic recordings for spot sounds Finally went out on the river to hope for a cuckoo No such luck though A frosty night in April at the RWSC Posted on 28th April 2015 by mike challis Went to the site and slept in the van to get up at 3 with the aim of recording without traffic noise and to catch the early morning bird activity In the event a mist rolled in and it was a very cold still night with a heavy frost The sound travelled for miles so when one car started coming in the fog on the A143 you could hear it for a long time before it finally disappeared Began to despair at ever getting traffic free recordings But patience paid off and I did get some good ones

    Original URL path: http://www.mikechallis.com/wordpress/author/mdchallis/page/2/ (2016-02-11)
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  • Mike Challis › Lost Password
    Mike Challis Please enter your username or email address You will receive a link to create a new password via email Username or E mail Log in Back to Mike

    Original URL path: http://www.mikechallis.com/wordpress/wp-login.php?action=lostpassword (2016-02-11)
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  • Mike Challis › Log In
    Mike Challis Username Password Remember Me Lost your password Back to Mike Challis

    Original URL path: http://www.mikechallis.com/wordpress/wp-login.php (2016-02-11)
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  • SoundHide Electronics | Mike Challis
    This became a major design challenge of it s own I was used to using Arduino microcomputer boards with their Waveshields to provide freestanding mono audio but I wanted four channel quad Powering a laptop and audio interface the normal way of doing this was out of the question due to power demands Then I discovered the Adafruit Music Maker shield which would give me stereo I decided to run two of these to give me quad Sychronising them would be a problem that might be solved with SPI connections but in the end I discovered that they booted up and played together pretty well To ensure there was no chorusing and drift I mixed the sound field in dual stereo rather than quad so any small drift wouldn t matter Also after considering the interactive nature of the hide and have all sorts of sensor in it I decided that I actually wanted people to immerse themselves in the sounds that I had carefully crafted so I decided that the interactive part would lie outside the hide and help people identify the sound in the installation So the electronics had to include a way of playing spot sounds I

    Original URL path: http://www.mikechallis.com/wordpress/soundhide-electronics/ (2016-02-11)
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  • Recording Bats | Mike Challis
    Bat Group doing a Bat Conservation workshop on recognising and counting mainly Daubenton bats along the rivers During the practical part of the session out on the river at the centre I managed to get some recordings of Pipistrelle Noctule and Daubenton bats This was fantastic I was using a heterodyne detector that tunes into the high frequency sounds the bats make and translates them into audible frequencies that we

    Original URL path: http://www.mikechallis.com/wordpress/recording-bats/ (2016-02-11)
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  • Stridulating Waterboatmen | Mike Challis
    15th June 2015 by mike challis Well I dropped the hydrophones into the lake from the bridge and struck gold Stridulating Water boatmen Like crickets and grasshoppers Water boatmen rub parts of their body together and make sound It s for the same reason that birds sing Territory and sex My friend Lee Patterson tells me they are probably Corixa waterboatmen http www mikechallis com wordpress wp content uploads 2015

    Original URL path: http://www.mikechallis.com/wordpress/stridulating-waterboatmen/ (2016-02-11)
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