[ProAudio] The High-Resolution Challenge

Dan Lavry dan at lavryengineering.com
Sat Feb 15 21:10:25 EST 2020

There is a difference between  rate of the modulator and sample rate. So we dont record at higher sample rate. The modultor runs at much faster rate, producing intermediate results and one needs a decimator to have to audio signal.However I agree that in most cases a converter designed for say 192khz will offer 2 more decimation stages to 96 and 48khz. One can do it externernaly.Your point is well taken. Why make the files so large? Downloading a 192khz file takes 4 times of 48khz. I am all for keeping enough band width, but not more than needed.RegardsDan LavrySent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: Bob Olhsson via ProAudio <proaudio at bach.pgm.com> 
Date: 2/15/20  4:56 PM  (GMT-08:00) 
To: proaudio at bach.pgm.com 
Subject: Re: [ProAudio] The High-Resolution Challenge 

By the same token, the reason to down-sample is to save space. We don’t actually record at 48k. We record at much higher sample rates and then down-sample to save storage. The real issue is when and by how much should we down sample. For production, many of us feel down-sampling to no less than 96k yields better sounding signal processing in a final 48 or 44.1k product than a chain of up and down-sampled processes. It’s all about easier filtering. Bob Olhsson 615-562-4346 From: Dan Lavry via ProAudio:The reason to up sample is to enable easier filtering.  
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