Hi Rob,
Yes I have tried lining up two files, one recorded in high
sensitivity volume 2, the other on low sensitivity volume 10. I then
increased the levels of the low sens. file by 5 dB (also 7 dB) to
match the levels (of the recorded bird sounds or whatever) of the
high sens. file. The exact amount of increase needed I am still
working on, but it seems to be about 5-7 dB. Even with this
increase, the noise levels are still lower with the low sens. file,
especially the FIZZ noise.
Vicki
On 06/07/2008, at 2:01 PM, Rob Danielson wrote:
> At 11:52 AM +1000 7/6/08, Vicki Powys wrote:
>> All,
>>
>> Using an ME67 connected to my LS-10, I have done a bit more testing
>> in the field (and indoors) of noise levels using high vs low
>> sensitivity. For lyrebirds, I do seem to get a better result using
>> low sensitivity at volume 10, instead of high sensitivity at volume
>> 2. There is much less FIZZ.
>>
>> But also, surprisingly, I seemed to get better results yesterday when
>> recording Regent Honeyeaters (they have a soft melodious call), using
>> low sensitivity at volume 10, then raising the levels to match what I
>> had recorded at high sensitivity at volume 5. Again, much less FIZZ
>> on low sens.
>
> Did you confirm this with matched playback levels? If not, place the
> tests made with high and low sensitivity one after the other on
> different tracks in a time-line. Boost the playback volume of the low
> sensitivity one to match the playback level of the louder (high
> sensitivity) one. You should be able to hear the difference in the
> "fizz" noise level where the two files join.
>
>>
>> This seems to be a very complex issue! More testing needed!
>>
>> I haven't tried these tests with the WL-183s, but would suspect a
>> similar result.
>
> Perhaps. The WL-183's are fairly sensitive mics but not in the same
> ballpark with the ME-67.
>
>>
>> Re my binaural setup, and your comment Rob (see below), where do I
>> find Aaron's DSM temple mount set up?
>
> Aaron uses a WHB/N Windscreen
> http://www.sonicstudios.com/access.htm#whb I'm not sure if Leonard
> sells just the mount-windscreen or not but you can see how his design
> works in the pictures. Rob D.
>
>
>
>>
>> Vicki Powys
>> Australia
>>
>> On 03/07/2008, at 12:31 AM, Raimund Specht wrote:
>>
>>>
>>> Rob Danielson wrote:
>>>>
>>>> A metronome at 5 metres might be a pretty "hot" reference signal.
>>>> Its possible that the "Low Sensitivity" setting might not provide
>>>> sufficient gain for quieter sounds and environments. Its worth
>>>> further investigation, for sure.
>>>>
>>>> Coincidentally, earlier today, I thought of Aaron's DSM temple
>>>> mount
>>>> preference in relation to your WL-183 rig priorities. Rob D.
>>>
>>> Yes, this is a relatively loud test signal. Though, I believe that
>>> this is an adequate model for a loudly singing Lyrebird.
>>>
>>> For recording softer sounds, one should perhaps better use the HIGH
>>> MIC SENSE setting. The problem with the Lyrebird was obviously that
>>> the REC LEVEL was turned down to 2, which caused the higher overall
>>> noise level. In other words, it is not appropriate to attenuate the
>>> microphone signal and then amplify it again in the next stage.
>>>
>>> Note that the MIC 2 input of the TASCAM DR-1 also provides a
>>> relatively low gain (input clipping level: -28 dBu), while its
>>> inherent noise floor (-115 dBu(A)) is still good enough for the
>>> K6/ME6x series.
>>>
>>> Regards,
>>> Raimund
>>>
>>>
>>>
>>>
>>>
|