rob aylestone
Moderator
I was doing some tests, and tried something that produced some very shaky results on my acoustics in my video studio.
It's a space that is about 7m x 7m, open on one side to a bigger space and early on I installed some cotton drapes for green screen, then blue, then some heavier black drapes and for storage reasons I left them all hanging and discovered audio wise, all the drapes made the space quite dead. I've been very happy with all the audio work I have done in it - they sound fine.
My experimenting yesterday was with audio tones from 250 to 4K - following on from the hearing test I had doing a university study for a fella interested in hearing loss in musicians. One of the tests was a sweep tone covering that 250 to 4KHz range. I generated the tone in the computer and using the tools in cubase watched the sweep run left to right. Everything looked as I expected it. Yesterdays 414 was still connected so thinking about mic accuracy - I pointed it at 1 of my Adam T8V's from about 3ft away, and hit record. I expected it to mimic the display I'd just seen on the screen, but wow - was it different. Stuff that I can't hear, and also evidence of harmonics. Mostly at double the frequency, but even a hint of higher ones too.
Has anyone else tried this? There was also something very strange going on with stereo imaging. On the one speaker - when the sweep played, with my eyes closed, the speaker moved - a defined left to right shift. I cannot hear any of this in music, but the tones really mess it up. I thought it would make an interesting video - if you watch the video what you see (well to me)was a bit of a shock.
Clearly, when we joke about newcomers covering their studio walls with thin foam, we were giving very good advice. I was shocked that the mic captured so much energy low down that was not being absorbed by my 'treatment'.
See what you think.
It's a space that is about 7m x 7m, open on one side to a bigger space and early on I installed some cotton drapes for green screen, then blue, then some heavier black drapes and for storage reasons I left them all hanging and discovered audio wise, all the drapes made the space quite dead. I've been very happy with all the audio work I have done in it - they sound fine.
My experimenting yesterday was with audio tones from 250 to 4K - following on from the hearing test I had doing a university study for a fella interested in hearing loss in musicians. One of the tests was a sweep tone covering that 250 to 4KHz range. I generated the tone in the computer and using the tools in cubase watched the sweep run left to right. Everything looked as I expected it. Yesterdays 414 was still connected so thinking about mic accuracy - I pointed it at 1 of my Adam T8V's from about 3ft away, and hit record. I expected it to mimic the display I'd just seen on the screen, but wow - was it different. Stuff that I can't hear, and also evidence of harmonics. Mostly at double the frequency, but even a hint of higher ones too.
Has anyone else tried this? There was also something very strange going on with stereo imaging. On the one speaker - when the sweep played, with my eyes closed, the speaker moved - a defined left to right shift. I cannot hear any of this in music, but the tones really mess it up. I thought it would make an interesting video - if you watch the video what you see (well to me)was a bit of a shock.
Clearly, when we joke about newcomers covering their studio walls with thin foam, we were giving very good advice. I was shocked that the mic captured so much energy low down that was not being absorbed by my 'treatment'.
See what you think.
