I want to make some short samples to use as a source for Melohman and Cameleon (amongst others) and could use some help.
I keep seeing "PCM" mentioned as well as "oversampling" but can't find a definitive how to for recording high quality samples.
Can any old PC do PCM samples (I have Soundforge 7 and a firewire 410) or is there some special software required. If the former. how??
If I record at a rate of say 96k, is that oversampling?? And what is the purpose of it if the sampler I want to use in maxes out at 48k?? Shouldn't i just record it at 48k and leave it at that??
Finally, any recommendations on a free VST or DXi tuner that I can use for tuning the samples if I am unsure of their original pitch??
Thx all
Sarky
recording new samples - PCM??
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- KVRAF
- 6937 posts since 4 Jun, 2004 from Utrecht, Holland
"PCM" is effectively another way of saying WAV or AIFF. Its the technique used in eg CD's to represent audio data as digital data. So not to worry, any computer can do "PCM".
Oversampling is something different. Suppose you have a sample made at 11kHz but want to play it at a sampling frequency of 44kHz. The computer has to deliver a value 44.000 times/sec but it only has 11.000 values each second. So it has to make up the other 33.000 values each second. For this it draws a smooth curve through the values it knows and so makes up values that weren't there.
In general it is sufficient to sample at 44 or 48kHz. If you have a sample of 96k and play it on 48k, it is effectively downsampled. If you play it at any pitch other than the original pitch it is then resampled. All this may happen without you knowing anything about it. You supply the sample, and the sampler just plays it.
I use the frequency analysis tool of CoolEditPro to determine the basic frequency and thus the key that was played. Not free, nor a VST/DX, but otherwise fantastic!
Oversampling is something different. Suppose you have a sample made at 11kHz but want to play it at a sampling frequency of 44kHz. The computer has to deliver a value 44.000 times/sec but it only has 11.000 values each second. So it has to make up the other 33.000 values each second. For this it draws a smooth curve through the values it knows and so makes up values that weren't there.
In general it is sufficient to sample at 44 or 48kHz. If you have a sample of 96k and play it on 48k, it is effectively downsampled. If you play it at any pitch other than the original pitch it is then resampled. All this may happen without you knowing anything about it. You supply the sample, and the sampler just plays it.
I use the frequency analysis tool of CoolEditPro to determine the basic frequency and thus the key that was played. Not free, nor a VST/DX, but otherwise fantastic!
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- KVRist
- Topic Starter
- 410 posts since 29 Jul, 2003
Great, thanks for the help.
Been checking out Soundforge and found their freq analyzer. They mention the dominant freq of the sample, which I assume is what I need for tuning purposes.
Been checking out Soundforge and found their freq analyzer. They mention the dominant freq of the sample, which I assume is what I need for tuning purposes.
Want to change your additive synth into an addictive one? You just need 5000 Cs!