Downsampling for saving CPU
Posted: Thu Jul 06, 2017 10:00 am
HI,
I'm experimenting with a 4 band compressor and limiter.
For the lower band, only low frequencies are there for processing (naturally), say lower than 500Hz.
In this case, I'm interested in downsampling this band.
No need for information at the speed of 48KHz for signals lower than 500Hz.
How can I do that? Using hop will just 'throw away' some of the samples, but calculation will still be at 48 KHz.
Is there a smart way to 'downsample' a whole block (compressor + Limiter) for low frequency processing?
I'm experimenting with a 4 band compressor and limiter.
For the lower band, only low frequencies are there for processing (naturally), say lower than 500Hz.
In this case, I'm interested in downsampling this band.
No need for information at the speed of 48KHz for signals lower than 500Hz.
How can I do that? Using hop will just 'throw away' some of the samples, but calculation will still be at 48 KHz.
Is there a smart way to 'downsample' a whole block (compressor + Limiter) for low frequency processing?