The files are 16 bit, I hope that's not what you're recording at for the or=
iginals.=A0 Using 24 bit is soo much better for things that are quiet.=A0 T=
here's also a bit of natural dynamic range compression with 24 bit (when co=
nverted to 16 bit).=A0 Assuming that your recording device supports it.
Sounds are complex and while most of the sound is in the audible range, the=
re are harmonics that make up the character of the sound.=A0 At low samplin=
g rates like 44.1kHz which maxes out at a theoretical 22,050 Hz you miss ou=
t on a lot of the soundscape.=A0 And since it's sound "samples", there are =
higher frequency sounds that get sampled at half their frequency at lower s=
ample rates which makes things sound muddier.=A0 Most mics are tested for 2=
0Hz to 20kHz (assumed averages of human hearing), but they pick up sounds a=
lot higher than 20kHz.
Editing can reveal certain things.=A0 Notch filter at the dominant 5kHz fre=
quency and the cricket sound basically vanishes.=A0 Which seems to be diffe=
rent frequencies between the 44.1kHz and 96kHz samples.=A0 And you can do l=
owpass and highpass filters to make the sound fall within the capabilities =
of your speakers for even less mud.=A0 Which at 96kHz will include a lot of=
stuff not audible to most humans anyway.=A0 Audacity has these types of fi=
lters built into the application.=A0 As will most audio applications design=
ed for editing.=A0 Mixing any edits with the original can help soften the h=
arshness of the edits.
I always try to record at 24 bit and 96Khz since it keeps the editing optio=
ns open.=A0 Although I don't really notice much difference when using low e=
nd gear.=A0 And any deliverables I produce are rarely better than 16 bit an=
d 48kHz.=A0 I had studio monitors at one time and they did reveal some not =
very audible things, like the low end rumble of handling noise and even a r=
adio station transmitter that influenced the recording gear.=A0 It was very=
educational, but not something that I would use on a regular basis so I so=
ld them.=A0 Plus they made me sad when hearing how badly produced some of m=
y favorite tunes had been.
- James
On Sunday, May 31, 2015 1:53 AM, "BinauralBrisbane =
ail.com [naturerecordists]" <> wrote:
=A0 Hi, in my experience the difference is similar to taking a high-mega=
pixel RAW photograph or a high-megapixel JPEG- to look at the pictures they=
both appear the same and basically they are. It's when it comes to editing=
that you really appreciate the difference.=A0A high resolution recording h=
as a lot more information and affords more leeway if you want to quieten un=
wanted background noise or play around with low frequencies etc- to me that=
's the most important difference.If I'm just going to record and not edit I=
use 44.1kHz or even a high res mp3- to my ears they sound the same.
Kind Regards,Tony (Binaural Brisbane)
On 31 May 2015, at 14:51, crystal [naturerecordists] <na=
> wrote:
=A0 Yes, i did some test a few years ago and everyone whom i asked could=
tell a difference with bird sounds and insects. I was surprised. This was =
playing it back on a good system.
I got a couple recordings of a creek today using my PCM-M10 and the built=
-in mics (using a Rode Dead Kitten for a windscreen). I took one at 44.1 kH=
z, and another at 96 kHz just to see if I could detect any difference (expe=
cting the answer to likely be no). To my surprise, not only could I definit=
ely hear a difference, but I can also see a very obvious difference in the =
spectrogram generated by Izotope RX 4. Here=92s what I=92m seeing (and hear=
ing):
.....
Note that the recordings are directly from the M10 without any editing.
Firstly, I see in the 44.1 kHz recording that the cricket sounds are crea=
ting a very visible band at around 5 kHz with a secondary band at about 5.8=
kHz. In the 96 kHz recording, the same crickets are now two less distinct =
bands at 10 kHz and 15 kHz. Can someone explain to me what=92s causing the =
apparent compression? My expectation was just that I simply would lose the =
higher frequencies with the lower sampling rate, but that doesn=92t appear =
to be the case.
Based on this result, my impulse is to start recording everything at 96 k=
Hz, file size be damned.=A0
--
http://www.gardenofsensualdelight.com
https://soundcloud.com/crystalawareness/tracks
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