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Some converter through delay tests for your comments...
Old 30th April 2003
  #1
Some converter through delay tests for your comments...

"mic" is supposed to represent musicians ears.

Reference click is audio playback from PT - same click each time

Sample figure = difference between arival time of RECORDED click in PT session compaired to reference click.

Headphone overdubbing

Click via Digidesign 888 D/A to headphone amp - headphones - mic placed in between the headphones - recording to PT via Cranesong Hedd = 94 samples

Click via Digidesign 888 D/A to headphone amp - headphones - mic placed in between the headphones - recording to PT via Prism Dream ADA = 102 samples

Click via Digidesign 888 D/A to headphone amp - headphones - mic placed in between the headphones - recording to PT via 888 = 108 samples

Various control room overdubbing scenarios

Click out of PT via Hedd D/A - to main monitors - mic placed where musician usually sits to PT via Cranesong Hedd A/D= 320 samples

Click out of PT via Prism Dream ADA D/A - to main monitors - mic placed where musician usually sits to PT via Prism Dream ADA = 348 samples


Click out of PT via Prism Dream ADA D/A to Dangerous 2 bus - to main monitors - mic placed where musician usually sits to PT via Cranesong Hedd = 338 samples

Click out of PT via Prism Dream ADA D/A to Dangerous 2 bus - to main monitors - mic where musician sits to PT via Prism Dream ADA = 348 samples


Click out of PT via Benchmark DAC-1 D/A to main monitors - mic where musician sits to PT via Cranesong Hedd = 398 samples

Click out of PT via Benchmark DAC-1 D/A to main monitors - mic where musician sits to PT via Prism Dream ADA = 406 samples

All sample times are approximate...

The feed to head phones wasn't done via a 'send' (that would add an additional 3 samples)

moving the mic (acting as musicians ears) back in the control room a few feet had a BIG effect on the sample delay figures (increasing them) when we tried it. (but all the above figures were with the mic in the same spot)

So, any thoughts?

I couldn't find the old thread that suggested nudging performances after recorded to move them to the 'right place'... But I sure would like to start the dialog again!
Old 30th April 2003
  #2
What's the delay between the left and right speaker by the way?

This also plays a part in how you filter out certain freqs in the room.
Old 30th April 2003
  #3
Interesting question...
Old 30th April 2003
  #4
Quote:
Originally posted by Jules
Interesting question...
Yeah,

We naturally have a slight shift or delay from L-R(because of our craniums and distance between ears).

If the throughput delay is different in the room itself(different setup between the left and right side of the room) this will effect what you hear.

Also take into account that most vocalists record with one ear off(headphone) to hear themselves in the room and that also has a throughput delay(not to mention the blend between direct sound and reflected coming off from the open headphone).

Did you try it through an analog board(maybe a cheap Mackie maybe)? To see if the delay is minimal?
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