On Tue, 7 Oct 2003 23:51:07 +0300 (EEST) Tommi Sakari Uimonen <tuimonen@xxxxxxxxx> wrote: > Hi. If I want to resample from 96khz to 48khz, what would give the best > result: use libsamplerate, or just drop off odd (or even) samples? > > I guess the libsamplerate and any of its interpolations would cause some > digital garbage anyway, Sample rate conversion using libsamplerate's SRC_SINC_* converters gives a signal to noise ratio of 96dB or better. Yes there is some digital garbage but its probably less than the noise picked when an instrument is recorded with a microphone. > or are they intellectual enough to detect that the > rate is halved and just perform a drop off? On most normal signals, dropping every second sample will sound considerably worse than what libsamplerate does. I suggest that you read up on sampling and aliasing for an explanation of why. Erik -- +-----------------------------------------------------------+ Erik de Castro Lopo nospam@xxxxxxxxxxxxx (Yes it's valid) +-----------------------------------------------------------+ "OS X is great that way. I put a copy of OS X on my coffee table, and it hasn't been hacked yet. Yes, I am using it as a server. I serve several meals on it every week." -- Anthony Minkoff
