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[Nature Recordists] Digest Number 6556

To: "" <>
Subject: [Nature Recordists] Digest Number 6556
From: "" <>
Date: Mon, 14 Mar 2016 08:09:52 +0000
There are 10 messages in this issue.

Topics in this digest:

1a. Re: bat recording - pettersson D240x    
    From: Jonas Gruska
1b. Re: bat recording - pettersson D240x    
    From: Peter Shute
1c. Re: bat recording - pettersson D240x    
    From: Ivano Pelicella
1d. Re: bat recording - pettersson D240x    
    From: Bill Kraus
1e. Re: bat recording - pettersson D240x    
    From: Ivano Pelicella
1f. Re: bat recording - pettersson D240x    
    From: Bill Kraus
1g. Re: bat recording - pettersson D240x    
    From: Gianni Pavan
1h. Re: bat recording - pettersson D240x    
    From: Peter Shute
1i. Re: bat recording - pettersson D240x    
    From: Peter Shute
1j. Re: bat recording - pettersson D240x    
    From: Dan Dugan


Messages
________________________________________________________________________
1a. Re: bat recording - pettersson D240x
    Posted by: "Jonas Gruska"  mrqwa
    Date: Sun Mar 13, 2016 1:26 am ((PST))

Awesome to hear Ivano! This is great news. Do you have any idea about 
when it might be finished?
Also - do you have any sample recordings from your current Ultramic 
(assuming it is going to use the same Knowles MEMS sensor)?

Thank you,
Jonas

✺ ✺ ✺
http://jonasgru.sk
On 13 Mar 2016, at 8:25, Ivano Pelicella  
[naturerecordists] wrote:

> Hi all
>
> I'm actually working on a new Ultramic with 384khz sampling rate and 
> with
> integrated micro sd card so in order to record you only need this 
> device
> and an external power supply. I'm trying to make it waterproof so it 
> can be
> left outdoor. Since the firmware can be upgraded remotedly all the 
> feedback
> and requests from users can be taken into account for future 
> improvements.
> Last but not least I'm tring to keep it cheap so everyone can use it
>
> Regards
> Ivano Pelicella
> Dodotronic
>
> 2016-03-13 0:54 GMT+01:00  [naturerecordists] <
> >:
>
>>
>>
>> I am new to this group so I hope it's ok to mention this, but I've
>> developed an Android app that - in conjunction with an ultrasonic mic 
>> such
>> as any of the Dodotronic mics or Pettersson Elecktronik's new 
>> M500-384,
>> will record full frequency spectrum signals (within the limits of the
>> nyquist frequency of each mic, of course). In the case of the 
>> M500-384 with
>> a sampling rate of 284 kHz, that's an upper frequency of 192 kHz.
>>
>> The app shows a real-time spectrogram and wave amplitude display, 
>> supports
>> rea-ltime monitoring in the audible range via frequency division or
>> heterodyne tuning (either manual or automatic), and in addition, 
>> supports
>> time expansion in playback mode. Of course, the app also supports 
>> recording
>> through the TRRS jack, but those recordings are not ultrasonic.
>>
>> The app will also automatically geotag recordings, and you can set a
>> trigger to automatically record if a signal is within a specified 
>> frequency
>> range and intensity. It also supports a timer, and I am just about to
>> upload a new version that supports remote notification via SMS 
>> messaging
>> and email when an automatic trigger is fired.
>>
>> It runs on smart phones (e.g. Moto G 1st gen, Samsung S3, Samsung S5) 
>> and
>> tablets that support USB Host mode. I currently charge $5.99 through 
>> the
>> Google Play Store - for that price, you can install it on as many of 
>> your
>> Android devices as you'd like as long as the account is the same as 
>> the
>> Google Play account.
>>
>> Believe me, this isn't really a profit making endeavor - but as it 
>> former
>> biologist and now software developer, I developed it for my own use
>> recording bats here in the Pacific Northwest, and the income helps 
>> defray
>> some of the cost of new testing equipment, and several mic 
>> manufacturers
>> like Lars at Pettersson and Ivano at Dodontronic have been incredibly
>> supportive. And while I am constantly adding features, the intent has 
>> never
>> been to supplant existing desktop analysis systems, but rather 
>> complement
>> them by providing a convenient, cost-effective way to record 
>> ultrasonic
>> sounds.
>>
>> Anyways, I mention it because if you already have an ultrasonic USB 
>> mic,
>> the app provides an easy way to record with your smart phone. In 
>> fact, I
>> just received a miniMIC and I will be working to support that in the 
>> next
>> few days.
>>
>> More info about the app is at my website Digital Biology
>> <http://www.digitalbiology.com> - it's called 'Bat Recorder'.
>> Digital Biology <http://www.digitalbiology.com>
>> Site powered by Weebly. Managed by Namecheap
>> View on www.digitalbiology.com <http://www.digitalbiology.com>
>> Preview by Yahoo
>>
>> ,
>>
>>
>>
>
>
>
> -- 
> _________________
> www.dodotronic.com




Messages in this topic (23)
________________________________________________________________________
1b. Re: bat recording - pettersson D240x
    Posted by: "Peter Shute"  pshute2
    Date: Sun Mar 13, 2016 4:44 am ((PDT))

Can you give any indication of price, Ivano? If I upgrade, I was thinking one 
of your mics might be more versatile that the Echo Meter Touch. That one seems 
like good value, but I don't like to be locked into using an iPhone. The 
current Utramics can be used with iPhones, PCs, etc, can't they?



Peter Shute



Sent from my iPad



On 13 Mar 2016, at 6:25 PM, Ivano Pelicella 
<> [naturerecordists] 
<<>> 
wrote:







Hi all



I'm actually working on a new Ultramic with 384khz sampling rate and with 
integrated micro sd card so in order to record you only need this device and an 
external power supply. I'm trying to make it waterproof so it can be left 
outdoor. Since the firmware can be upgraded remotedly all the feedback and 
requests from users can be taken into account for future improvements.

Last but not least I'm tring to keep it cheap so everyone can use it



Regards

Ivano Pelicella

Dodotronic



2016-03-13 0:54 GMT+01:00 <> 
[naturerecordists] 
<<>>:





I am new to this group so I hope it's ok to mention this, but I've developed an 
Android app that - in conjunction with an ultrasonic mic such as any of the 
Dodotronic mics or Pettersson Elecktronik's new M500-384, will record full 
frequency spectrum signals (within the limits of the nyquist frequency of each 
mic, of course). In the case of the M500-384 with a sampling rate of 284 kHz, 
that's an upper frequency of 192 kHz.



The app shows a real-time spectrogram and wave amplitude display, supports 
rea-ltime monitoring in the audible range via frequency division or heterodyne 
tuning (either manual or automatic), and in addition, supports time expansion 
in playback mode. Of course, the app also supports recording through the TRRS 
jack, but those recordings are not ultrasonic.



The app will also automatically geotag recordings, and you can set a trigger to 
automatically record if a signal is within a specified frequency range and 
intensity. It also supports a timer, and I am just about to upload a new 
version that supports remote notification via SMS messaging and email when an 
automatic trigger is fired.



It runs on smart phones (e.g. Moto G 1st gen, Samsung S3, Samsung S5) and 
tablets that support USB Host mode. I currently charge $5.99 through the Google 
Play Store - for that price, you can install it on as many of your Android 
devices as you'd like as long as the account is the same as the Google Play 
account.



Believe me, this isn't really a profit making endeavor - but as it former 
biologist and now software developer, I developed it for my own use recording 
bats here in the Pacific Northwest, and the income helps defray some of the 
cost of new testing equipment, and several mic manufacturers like Lars at 
Pettersson and Ivano at Dodontronic have been incredibly supportive. And while 
I am constantly adding features, the intent has never been to supplant existing 
desktop analysis systems, but rather complement them by providing a convenient, 
cost-effective way to record ultrasonic sounds.



Anyways, I mention it because if you already have an ultrasonic USB mic, the 
app provides an easy way to record with your smart phone. In fact, I just 
received a miniMIC and I will be working to support that in the next few days.



More info about the app is at my website Digital 
Biology<http://www.digitalbiology.com> - it's called 'Bat Recorder'.





Digital Biology <http://www.digitalbiology.com>

Site powered by Weebly. Managed by Namecheap





View on www.digitalbiology.com <http://www.digitalbiology.com>



Preview by Yahoo







  ,







--

_________________

www.dodotronic.com<http://www.dodotronic.com>









Messages in this topic (23)
________________________________________________________________________
1c. Re: bat recording - pettersson D240x
    Posted by: "Ivano Pelicella"  ipelicella
    Date: Sun Mar 13, 2016 4:58 am ((PDT))

Hi Jonas

I'm just working on it.
There's a problem with the synchronization from the usb buffer request from
the PC and the serial audio interface that receive the samples from the ADC.
In this week I'd receive the first prototype board so I can do the real
test. At the moment I'm working with the waveform generator, it's the
"worst case" for the ultramic so if it works well it'll do better in the
fileld use.
For this device I'll use the MEMS sensors from Knowles, for the WaveShark
and WaveFalcon I'll use waterproof connector so eveyone can attach their
own microphone

Regards
Ivano

2016-03-13 10:26 GMT+01:00 'Jonas Gruska' 
[naturerecordists] <>:

>
>
> Awesome to hear Ivano! This is great news. Do you have any idea about when
> it might be finished?
> Also - do you have any sample recordings from your current Ultramic
> (assuming it is going to use the same Knowles MEMS sensor)?
>
> Thank you,
> Jonas
>
> ✺ ✺ ✺
> homepage <http://jonasgru.sk>
>
> On 13 Mar 2016, at 8:25, Ivano Pelicella 
> [naturerecordists] wrote:
>
> Hi all
>
> I'm actually working on a new Ultramic with 384khz sampling rate and with
> integrated micro sd card so in order to record you only need this device
> and an external power supply. I'm trying to make it waterproof so it can
> be
> left outdoor. Since the firmware can be upgraded remotedly all the
> feedback
> and requests from users can be taken into account for future improvements.
> Last but not least I'm tring to keep it cheap so everyone can use it
>
> Regards
> Ivano Pelicella
> Dodotronic
>
> 2016-03-13 0:54 GMT+01:00  [naturerecordists] <
> >:
>
>
>
> I am new to this group so I hope it's ok to mention this, but I've
> developed an Android app that - in conjunction with an ultrasonic mic such
> as any of the Dodotronic mics or Pettersson Elecktronik's new M500-384,
> will record full frequency spectrum signals (within the limits of the
> nyquist frequency of each mic, of course). In the case of the M500-384
> with
> a sampling rate of 284 kHz, that's an upper frequency of 192 kHz.
>
> The app shows a real-time spectrogram and wave amplitude display, supports
> rea-ltime monitoring in the audible range via frequency division or
> heterodyne tuning (either manual or automatic), and in addition, supports
> time expansion in playback mode. Of course, the app also supports
> recording
> through the TRRS jack, but those recordings are not ultrasonic.
>
> The app will also automatically geotag recordings, and you can set a
> trigger to automatically record if a signal is within a specified
> frequency
> range and intensity. It also supports a timer, and I am just about to
> upload a new version that supports remote notification via SMS messaging
> and email when an automatic trigger is fired.
>
> It runs on smart phones (e.g. Moto G 1st gen, Samsung S3, Samsung S5) and
> tablets that support USB Host mode. I currently charge $5.99 through the
> Google Play Store - for that price, you can install it on as many of your
> Android devices as you'd like as long as the account is the same as the
> Google Play account.
>
> Believe me, this isn't really a profit making endeavor - but as it former
> biologist and now software developer, I developed it for my own use
> recording bats here in the Pacific Northwest, and the income helps defray
> some of the cost of new testing equipment, and several mic manufacturers
> like Lars at Pettersson and Ivano at Dodontronic have been incredibly
> supportive. And while I am constantly adding features, the intent has
> never
> been to supplant existing desktop analysis systems, but rather complement
> them by providing a convenient, cost-effective way to record ultrasonic
> sounds.
>
> Anyways, I mention it because if you already have an ultrasonic USB mic,
> the app provides an easy way to record with your smart phone. In fact, I
> just received a miniMIC and I will be working to support that in the next
> few days.
>
> More info about the app is at my website Digital Biology
> <http://www.digitalbiology.com> - it's called 'Bat Recorder'.
> Digital Biology <http://www.digitalbiology.com>
> Site powered by Weebly. Managed by Namecheap
> View on www.digitalbiology.com <http://www.digitalbiology.com>
> Preview by Yahoo
>
> ,
>
>
>
>
>
> --
> _________________
> www.dodotronic.com
>
> 
>



-- 
_________________
www.dodotronic.com




Messages in this topic (23)
________________________________________________________________________
1d. Re: bat recording - pettersson D240x
    Posted by: "Bill Kraus"  bill_kraus_snapshots
    Date: Sun Mar 13, 2016 8:47 am ((PDT))

Great news, Ivano! Look forward to supporting it in my Android app!




Messages in this topic (23)
________________________________________________________________________
1e. Re: bat recording - pettersson D240x
    Posted by: "Ivano Pelicella"  ipelicella
    Date: Sun Mar 13, 2016 9:13 am ((PDT))

Hi Peter,

You can take a look at the price in my website: www.dodotronic.com
At the moment it's not compatible with iOS but the problem can be easily
solved, I'll send a sample mic to the author of Ultrasonic app.
Echo Meter Touch is a good product but with a different application field
and different characteristics.
The main problem with Ultramic250k and Ultramic200k is the compatibility:
they are not supported by some new OS such as Win8 and WIN10
This is the reason why I'm working hard to find a solution to this problem.
All OS support the multiple of standard sampling rate such as 48, 96, 192
and obviously 384 khz.
Ultramic ADC can reach 500 khz but I still must test this frequency on
different OS, surely it's not supported by windows but probably it'll be on
Apple and Android (linux included)

Regards
Ivano

2016-03-13 12:44 GMT+01:00 Peter Shute  [naturerecordists]
<>:

>
>
> Can you give any indication of price, Ivano? If I upgrade, I was thinking
> one of your mics might be more versatile that the Echo Meter Touch. That
> one seems like good value, but I don't like to be locked into using an
> iPhone. The current Utramics can be used with iPhones, PCs, etc, can't
> they?
>
> Peter Shute
>
> Sent from my iPad
>
> On 13 Mar 2016, at 6:25 PM, Ivano Pelicella <mailto:
> > [naturerecordists] <
> <>> wrote:
>
>
>
> Hi all
>
> I'm actually working on a new Ultramic with 384khz sampling rate and with
> integrated micro sd card so in order to record you only need this device
> and an external power supply. I'm trying to make it waterproof so it can be
> left outdoor. Since the firmware can be upgraded remotedly all the feedback
> and requests from users can be taken into account for future improvements.
> Last but not least I'm tring to keep it cheap so everyone can use it
>
> Regards
> Ivano Pelicella
> Dodotronic
>
> 2016-03-13 0:54 GMT+01:00 <>
> [naturerecordists] <<mailto:
> >>:
>
>
> I am new to this group so I hope it's ok to mention this, but I've
> developed an Android app that - in conjunction with an ultrasonic mic such
> as any of the Dodotronic mics or Pettersson Elecktronik's new M500-384,
> will record full frequency spectrum signals (within the limits of the
> nyquist frequency of each mic, of course). In the case of the M500-384 with
> a sampling rate of 284 kHz, that's an upper frequency of 192 kHz.
>
> The app shows a real-time spectrogram and wave amplitude display, supports
> rea-ltime monitoring in the audible range via frequency division or
> heterodyne tuning (either manual or automatic), and in addition, supports
> time expansion in playback mode. Of course, the app also supports recording
> through the TRRS jack, but those recordings are not ultrasonic.
>
> The app will also automatically geotag recordings, and you can set a
> trigger to automatically record if a signal is within a specified frequency
> range and intensity. It also supports a timer, and I am just about to
> upload a new version that supports remote notification via SMS messaging
> and email when an automatic trigger is fired.
>
> It runs on smart phones (e.g. Moto G 1st gen, Samsung S3, Samsung S5) and
> tablets that support USB Host mode. I currently charge $5.99 through the
> Google Play Store - for that price, you can install it on as many of your
> Android devices as you'd like as long as the account is the same as the
> Google Play account.
>
> Believe me, this isn't really a profit making endeavor - but as it former
> biologist and now software developer, I developed it for my own use
> recording bats here in the Pacific Northwest, and the income helps defray
> some of the cost of new testing equipment, and several mic manufacturers
> like Lars at Pettersson and Ivano at Dodontronic have been incredibly
> supportive. And while I am constantly adding features, the intent has never
> been to supplant existing desktop analysis systems, but rather complement
> them by providing a convenient, cost-effective way to record ultrasonic
> sounds.
>
> Anyways, I mention it because if you already have an ultrasonic USB mic,
> the app provides an easy way to record with your smart phone. In fact, I
> just received a miniMIC and I will be working to support that in the next
> few days.
>
> More info about the app is at my website Digital Biology<
> http://www.digitalbiology.com> - it's called 'Bat Recorder'.
>
>
> Digital Biology <http://www.digitalbiology.com>
> Site powered by Weebly. Managed by Namecheap
>
>
> View on www.digitalbiology.com <http://www.digitalbiology.com>
>
> Preview by Yahoo
>
>
>
> ,
>
>
>
> --
> _________________
> www.dodotronic.com<http://www.dodotronic.com>
>
>
> 
>



-- 
_________________
www.dodotronic.com




Messages in this topic (23)
________________________________________________________________________
1f. Re: bat recording - pettersson D240x
    Posted by: "Bill Kraus"  bill_kraus_snapshots
    Date: Sun Mar 13, 2016 9:39 am ((PDT))

As far as I am aware, the upper limit for asynchronous USB data transfer on
Android is 384 KHz - I would be surprised it iOS was any different here.
Frankly, the biggest issue with Android is the shear diversity of devices,
and that any device needs to support USB OTG (USB Host) to power the
external mic, whether it be a Dodotronic, Pettersson, or miniMIC.

I've personally been running the Dodotronic mic on Samsung S3 and S5, on a
Moto G first gen, and on a Nexus 7 3nd gen. The Dodontronic 250 even runs
on a bargain Lenovo Tab 2, although that tablet seems to have problems with
higher sampling rates beyond that.




Messages in this topic (23)
________________________________________________________________________
1g. Re: bat recording - pettersson D240x
    Posted by: "Gianni Pavan"  gpavan1960
    Date: Sun Mar 13, 2016 12:46 pm ((PDT))

great news about the ultramic. I look forward at the 384k version to
override the win 8/10 problems with SeaWave. I'll release a version for
tablets with bigger buttons and controls !
I'm not an expert of Android. Which is the best application for the
UltraMic ?

Gianni Pavan

2016-03-13 17:39 GMT+01:00 Bill Kraus  [naturerecordists]
<>:

>
>
> As far as I am aware, the upper limit for asynchronous USB data transfer
> on Android is 384 KHz - I would be surprised it iOS was any different here.
> Frankly, the biggest issue with Android is the shear diversity of devices,
> and that any device needs to support USB OTG (USB Host) to power the
> external mic, whether it be a Dodotronic, Pettersson, or miniMIC.
>
> I've personally been running the Dodotronic mic on Samsung S3 and S5, on a
> Moto G first gen, and on a Nexus 7 3nd gen. The Dodontronic 250 even runs
> on a bargain Lenovo Tab 2, although that tablet seems to have problems with
> higher sampling rates beyond that.
>
> 
>



-- 
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Università degli Studi di Pavia
Via Taramelli 24, 27100 Pavia
http://www.unipv.it/cibra
http://mammiferimarini.unipv.it




Messages in this topic (23)
________________________________________________________________________
1h. Re: bat recording - pettersson D240x
    Posted by: "Peter Shute"  pshute2
    Date: Sun Mar 13, 2016 3:41 pm ((PDT))

I'll try and post a recording today. Depending on your intended usage, would it 
be acceptable to just use noise removal? Aggressive noise removal is normally 
undesirable because of the unpleasant artefacts it creates, but because we 
can't know what bats really sound like, who's to say they're unpleasant in this 
case?



Peter Shute



Sent from my iPad



On 12 Mar 2016, at 10:00 PM, 'Jonas Gruska' 
<> [naturerecordists] 
<<>> 
wrote:







Thanks Peter,

I looking forward to your recordings.

I currently use Magenta Bat-5, which is a heterodyne as well and it is 
unfortunately quite noisy.

So that is why I am researching the more “higher-end” options out there…



Regards,

Jonas



✺ ✺ ✺

homepage<http://jonasgru.sk>



On 12 Mar 2016, at 8:14, Peter Shute 
<> [naturerecordists] wrote:



Mine's definitely sub $1000 at $38 - the Discovery Kids Ultrasonic Detector. 
It's a heterodyne detector, marked 20-100kHz on the dial, although I don't know 
how accurate that is. It certainly detects bats, but I haven't had a chance to 
try it on any higher than about 40kHz.



I've know idea how it compares to more expensive ones, as I haven't tried any. 
I'm guessing it has a lot more hiss.



It didn't come with a headphone jack. I've only just fitted one myself, so I 
don't have any recordings yet.



Peter Shute



Sent from my iPad



On 12 Mar 2016, at 1:21 AM, 'Jonas Gruska' 
<><m("gmail.com","mrqwaxgo");">> 
[naturerecordists] 
<<><m("yahoogroups.com","naturerecordists");">>>
 wrote:







Dear all,



I am researching the options of bat recording, currently looking into 
Pettersson D240X.

I was wondering whether anyone here has some recordings to share, I would love 
to hear the sound quality.

Or if you have any tips on sub-1000$ bat detectors, I would love to hear your 
tips.



Thanks!

Jonas



✺ ✺ ✺

homepage<http://jonasgru.sk>









Messages in this topic (23)
________________________________________________________________________
1i. Re: bat recording - pettersson D240x
    Posted by: "Peter Shute"  pshute2
    Date: Sun Mar 13, 2016 4:45 pm ((PDT))

Here's a recording made with the Discovery Kids detector:

https://soundcloud.com/petershute/bat-recorded-with-discovery-kids-ultrasonic-detector



It was recorded on a Sony PCM-M10 via a headphone jack I fitted myself to the 
detector. Note that I fiddled with the volume and frequency controls on the 
detector during the recording. I've noted the point where that begins with a 
comment. I'm not sure how long the fiddling continued, not more than a minute 
or two, I think.



No edits other than converting to mono, as it was recorded on the left track 
only.



Question. Seeing as this detector was so cheap, if I buy another and use it to 
record to the other track, would I have usable stereo?



Peter Shute



________________________________

From:  

Sent: Monday, 14 March 2016 9:41 AM

To: 

Subject: Re: [Nature Recordists] bat recording - pettersson D240x







I'll try and post a recording today. Depending on your intended usage, would it 
be acceptable to just use noise removal? Aggressive noise removal is normally 
undesirable because of the unpleasant artefacts it creates, but because we 
can't know what bats really sound like, who's to say they're unpleasant in this 
case?



Peter Shute



Sent from my iPad



On 12 Mar 2016, at 10:00 PM, 'Jonas Gruska' 
<> [naturerecordists] 
<<>> 
wrote:







Thanks Peter,

I looking forward to your recordings.

I currently use Magenta Bat-5, which is a heterodyne as well and it is 
unfortunately quite noisy.

So that is why I am researching the more “higher-end” options out there…



Regards,

Jonas



✺ ✺ ✺

homepage<http://jonasgru.sk>



On 12 Mar 2016, at 8:14, Peter Shute 
<> [naturerecordists] wrote:



Mine's definitely sub $1000 at $38 - the Discovery Kids Ultrasonic Detector. 
It's a heterodyne detector, marked 20-100kHz on the dial, although I don't know 
how accurate that is. It certainly detects bats, but I haven't had a chance to 
try it on any higher than about 40kHz.



I've know idea how it compares to more expensive ones, as I haven't tried any. 
I'm guessing it has a lot more hiss.



It didn't come with a headphone jack. I've only just fitted one myself, so I 
don't have any recordings yet.



Peter Shute



Sent from my iPad



On 12 Mar 2016, at 1:21 AM, 'Jonas Gruska' 
<><m("gmail.com","mrqwaxgo");">> 
[naturerecordists] 
<<><m("yahoogroups.com","naturerecordists");">>>
 wrote:







Dear all,



I am researching the options of bat recording, currently looking into 
Pettersson D240X.

I was wondering whether anyone here has some recordings to share, I would love 
to hear the sound quality.

Or if you have any tips on sub-1000$ bat detectors, I would love to hear your 
tips.



Thanks!

Jonas



✺ ✺ ✺

homepage<http://jonasgru.sk>













Messages in this topic (23)
________________________________________________________________________
1j. Re: bat recording - pettersson D240x
    Posted by: "Dan Dugan"  dandugan_1999
    Date: Sun Mar 13, 2016 4:55 pm ((PDT))

On Mar 13, 2016, at 4:40 PM, Peter Shute  [naturerecordists] 
<> wrote:
> 
> Here's a recording made with the Discovery Kids detector:
> https://soundcloud.com/petershute/bat-recorded-with-discovery-kids-ultrasonic-detector
> 
> It was recorded on a Sony PCM-M10 via a headphone jack I fitted myself to the 
> detector. Note that I fiddled with the volume and frequency controls on the 
> detector during the recording. I've noted the point where that begins with a 
> comment. I'm not sure how long the fiddling continued, not more than a minute 
> or two, I think.
> 
> No edits other than converting to mono, as it was recorded on the left track 
> only.
> 
> Question. Seeing as this detector was so cheap, if I buy another and use it 
> to record to the other track, would I have usable stereo?

You betcha!

-Dan






Messages in this topic (23)



"While a picture is worth a thousand words, a 
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.



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