Gearslutz.com - View Single Post - Is Digital Performer Audio and/or Summing Broken?

grimepoch · 29th February 2008

Believe me, I am just as clueless about this at the moment.

I do know that on certain hosts, many times a plugin will get data stuck in it. Like, when you rewind, start a song and the reverb starts ringing out what was sent to it before at some other part of the song (which is an absolute pain when you are bouncing out, always play some silence first).

Something like a compressor should be pretty straightforward. All I could imagine is that it might depend on the chunk of audio the plugin is asked to process. I know that Logic uses a lot of dynamic buffer sizing and DP uses a lot of pre-rendering for speeding up performance. Although, changing buffer sizes in each on deterministic plugins had the exact same results in the same DAW. Given that if I just use a gain slider in a plugin the results still null out, it's not a matter of some strange hand-off of the floats. I am thinking that the size of data passed in (like process these 128 samples) must be different OR that something is up with the unit of time.

I am more concerned with the fact MIDI notes do not consistently fire VI notes at predictable times in either DAW. (Of course, truth be told, external MIDI has this problem depending on how much data you are sending out your MIDI interface as well, and this is a known and unavoidable thing).

29th February 2008	#134
grimepoch Gear Head Joined: Sep 2007 Location: Raleigh, NC Posts: 69	Believe me, I am just as clueless about this at the moment. I do know that on certain hosts, many times a plugin will get data stuck in it. Like, when you rewind, start a song and the reverb starts ringing out what was sent to it before at some other part of the song (which is an absolute pain when you are bouncing out, always play some silence first). Something like a compressor should be pretty straightforward. All I could imagine is that it might depend on the chunk of audio the plugin is asked to process. I know that Logic uses a lot of dynamic buffer sizing and DP uses a lot of pre-rendering for speeding up performance. Although, changing buffer sizes in each on deterministic plugins had the exact same results in the same DAW. Given that if I just use a gain slider in a plugin the results still null out, it's not a matter of some strange hand-off of the floats. I am thinking that the size of data passed in (like process these 128 samples) must be different OR that something is up with the unit of time. I am more concerned with the fact MIDI notes do not consistently fire VI notes at predictable times in either DAW. (Of course, truth be told, external MIDI has this problem depending on how much data you are sending out your MIDI interface as well, and this is a known and unavoidable thing).