Annoying hiss

[tfm0722]

Hey guys, I searched for this already, but no one has brought it up.

When I am using the onboard mic to record acoustic guitar, I get this awful hissing sound as the note is dying out.  I have tried to cut back the bass and use the Noise Suppressor, but nothing works.  It's most prominent on bassier notes, like an open E chord.

It's so horrible because at the end of the song, when I let a chord ring out, instead of it naturally dying, it develops this hissing sound and sounds like crap. 

I have the BR about 5-7 inches away, facing the soundhole, usually on  AGLoCut with NS on, and the bass cut way back...I've tried to mic with an externally powered mic and the same issue.  Does the BR just not have the strength to sustain a note/chord without hissing?  I have messed around with EVERY combination of Input Volume/Sensitivity/NS settings/built in Mic effects...Nothing at all!

Thanks in advance
Tom

[betzq]

I have the BR about 5-7 inches away, facing the soundhole,

Best sound comes if you put the mic/microbr close to 12 bar of the guitar...

[tfm0722]

is 12 bar referring to the 12th fret of the guitar?

Sorry

Thanks for the reply

[Pedro]

Welcome Tom!

Are you recording in a place with much noise? Hiss is easily generated by computer fans.

[SteveG]

I have never had that problem, weird. No idea what is causing it tho.

[guitarron]

i know might sound dumb, but, do you have any fans or are near furnace ducts-any flourecent lighting or crt monitors?-
I might try to record with the effects turned off at various distances away from the mic-if it persists you may have a defective unit unfortunately
should try to rule out everything else first
btw-does this occur when you use an electric guitar or when te stereo line in is used?

[betzq]

is 12 bar referring to the 12th fret of the guitar?

yep, thats it... I have recorded all my acoustics with T.BONE ST40 and it doesnt have that problem.. it hisses all the time!
 So today i tested that onboard mic and realised that it actually is really good mic, but i noticed that same problem at the end of the song when i leaved the chord to ring.. i dont have solution sorry but i think it is because of AF method
(Adaptive Focus method) Adaptive Focus is a unique Roland/BOSS technology that allows the signal noise (S/N) ratios of AD and DA converters to be vastly improved

Edit: I boosted bass sounds at audacity and now i cant hear the hiss at the end,

[Pedro]

is 12 bar referring to the 12th fret of the guitar?

yep, thats it... I have recorded all my acoustics with T.BONE ST40 and it doesnt have that problem.. it hisses all the time!
 So today i tested that onboard mic and realised that it actually is really good mic, but i noticed that same problem at the end of the song when i leaved the chord to ring.. i dont have solution sorry but i think it is because of AF method
(Adaptive Focus method) Adaptive Focus is a unique Roland/BOSS technology that allows the signal noise (S/N) ratios of AD and DA converters to be vastly improved

Edit: I boosted bass sounds at audacity and now i cant hear the hiss at the end,

The mic preamp on the Line Input is what is causing that problem. I've come to find that the preamp circuit is a bit noisy and generates a lot of hiss. Its strange that the hiss is vastly reduced with the onboard mic. One should expect that the onboard mic also used preamp circuit but that does not seem to happen.

[tfm0722]

Thanks guys.

There is a lot of circuitry going on in my recording environment (lights, laptop), so I will try to change the setting and see what happens.  My guitar is pretty bassy, naturally, which increases the problem.

The hiss is also audible during bass notes on an electric guitar directly in the GUITAR input, but it's not as pronounced.  It is evident that it is NOT just hum from the single coils, either.

Also, I exported a small acoustic sample using the onboard mic from the BR to Audacity to see if the problem was just a BR-playback issue, but Audacity picked up the hiss loud and clear, even with the bass cut waaaay back on AGLoCut.

I'll test in another environment and see what happens.


Anyone have a reliable setup they would like to share when recording with the onboard mic for an acoustic guitar that works well for them?

Thanks,
Tom

[guitarron]

is 12 bar referring to the 12th fret of the guitar?

yep, thats it... I have recorded all my acoustics with T.BONE ST40 and it doesnt have that problem.. it hisses all the time!
 So today i tested that onboard mic and realised that it actually is really good mic, but i noticed that same problem at the end of the song when i leaved the chord to ring.. i dont have solution sorry but i think it is because of AF method
(Adaptive Focus method) Adaptive Focus is a unique Roland/BOSS technology that allows the signal noise (S/N) ratios of AD and DA converters to be vastly improved

Edit: I boosted bass sounds at audacity and now i cant hear the hiss at the end,