From: arethereanytagsleft (arethereanytagsleft_at_yahoo.co.uk)
Date: 2002-01-28 10:50:58
> A quick test confirms this, more or less -- from line-out on one PC
to
> line-in on my laptop gives the following amplitudes:
>
> 100Hz 32000
> 10Hz 10000
> 8Hz 9000
> 4Hz 6000
> 2Hz 2000
> 1Hz 1000
>
Are you sure you haven't ommitted a k (ie, should your numbers be
khz ?)
Sound cards use capacitors in the signal path, so any DC level is
removed. This means also that there is a lower frequency limit
because of the highpass characteristic of the capacitor in line. The
lower cutoff frequency is card dependent. AFAIK most soundcards
cannot detect frequencies <= c. 20Hz
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:37 BST