dlundy@emdeng.Dayton.NCR.COM (Dave.Lundy) (12/08/89)
I have been given the task of duplicating a very noisy cassette. It was recorded on type I tape with no noise reduction & much too low recording level. Can anyone suggest a reasonable way to make a copy with less noise. I know that there are a number of programs for the Amiga that can digitize & edit audio so I thought maybe one of them used some kind of DSP techniques that might be useful in this case. Thanks in advance for your suggestions. Dave Lundy
sterling@cbmvax.UUCP (Rick Sterling - PA) (12/08/89)
In article <116@emdeng.Dayton.NCR.COM> dlundy@emdeng.Dayton.NCR.COM (Dave.Lundy) writes: > I have been given the task of duplicating a very noisy cassette. > It was recorded on type I tape with no noise reduction & much too > low recording level. Can anyone suggest a reasonable way to make > a copy with less noise. I know that there are a number of programs > for the Amiga that can digitize & edit audio so I thought maybe one > of them used some kind of DSP techniques that might be useful in this > case. Thanks in advance for your suggestions. > > Dave Lundy Unless you have some highly correlated ``noise'' like 60hz hum, DSP techniques won't help here. You could ``edit'' out the noise between selections and any clicks or pops, but thermal and 1/f noise added to the program material can usually only be reduced by analogue low pass filtering. -------------------------------------------------------------------------------- Rick Sterling Commodore Technology Group (215)-431-9275 Test Engineering UUCP ...{uunet,allegra,rutgers}!cbmvax!sterling --------------------------------------------------------------------------------