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Dr. 8 Bit
Account closed
Registered: Sep 2006
Posts: 25 |
reduce the audio-noise
How can I reduce the audio-noise from c64?? some ideas?? a capcitor...mmm.. |
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dalezy
Registered: Apr 2002
Posts: 475 |
noise == <3, so true.
yet, hardware-buzzing coming from the vic with only one goal in mind: making the recording sound fucked up != <3.
i'd prefer to do it the software way, yet i'm not quite the best among the mastering-bunch. is there any surefire way to get rid of *any* bastard-sounds without hearable loss of the intended sound? |
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Hate Bush
Registered: Jul 2002
Posts: 456 |
@pan engmann:
you mean, the software way? no. if signal and noise share the same frequency, there is little you can do about it. (otherwise, it should be easy enough.) noise profile based method fails miserably in this case, you'll be better off with manual eq'ing the noise out, using a few thin notch filters.
the best way to get around the noise being 'under' the signal is to fatten up the arrangement, in particular: introducing more tracks operating in required frequency area. for example, a 8-14kHz hiss on vocals can be easily 'patched' by glossy, sharp hihat.
of course, there are professional mastering tools that make the process a breeze, more or less. however i doubt if you can afford them.
care to correct me, someone? i'd be more than glad. |
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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
Software way: I usually use Goldwave for this. The only thing that is required is a background-noise sample. The result is usually extremely good (good enough for audio-cds). |
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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
Here two examples. It removes the most noise, but not everything.
Anyway, it's a good solution instead of hacking the hardware. :)
http://www.rogepost.com/n/9999495240
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gregg
Account closed
Registered: Apr 2005
Posts: 56 |
I think it's common knowledge, but just in case: disable VIC while playing, it'll get rid of much noise. The MMC64 browser is capable of that (just press space).
Noise removal postprocessing (I did it with Audacity) always introduced some kind of artefacts for me. |
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chatGPZ
Registered: Dec 2001
Posts: 11145 |
especially when it comes to the sid, using postprocessing isnt very effective. better eliminate the noise by other means and dont record it in the first place. |
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Hate Bush
Registered: Jul 2002
Posts: 456 |
is it possible to disable the VIC without MMC64? if so, how to do it? |
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Oswald
Registered: Apr 2002
Posts: 5026 |
poke53265,0 |
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JackAsser
Registered: Jun 2002
Posts: 1990 |
Quote: poke53265,0
Dunno if you're were trying to make a joke Oswald.. :D Anyways, that poke doesn't disable the horizontal syncs, hence the high pitched noise will remain. On my C64 where this noise was rather extreme I insulated the h-sync signal and copper taped the whole VIC-cage. This helped very much. IIRC my boss added some sort of filter as well + did something with the line-in on the SID-chip. I'll ask him when he comes back. |
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WVL
Registered: Mar 2002
Posts: 886 |
Quote: is it possible to disable the VIC without MMC64? if so, how to do it?
lda #$0b
sta $d011
...
The 'noise' mainly comes from data flowing through the channels. But I'm wondering if this really helps? Isnt the design of the Vic such that it _must_ fetch a byte every cycle? I think the best would be to simply fill up a bank completely with 00's and let the vic display that, aswell as turning the screen off.
Then I'd let the 6502 do as little as possible by only doing lda #$a9 (or similar) when you don't have to jsr to the tune.. |
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