Technical Reference
272 topics in this forum
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- 1 follower
- 16 replies
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Hi Guys, I had a pretty bad sound issue today and as I am still learning the ropes, I wasn't able to figure it out on set. It happened only at one of my two recording sessions today. I could use any input to get to the bottom of this so I don't repeat it ever again. I completed my first field recording session with no problems. Then when helping a couple friends on an unpaid pickup shoot after, all hell broke loose and my audio is largely un-usable. This is what happened: We were recording in a relatively noisy small restaurant. By noisy I mean that there were loud variables we could not turn off (commercial fridges, loud oven going in the nearby kitch…
Last reply by jrd456, -
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- 26 replies
- 3.8k views
Hi all. I've got a documentary shoot coming up about languages. One scene will be a kitchen table discussion with numerous family members sitting around the table talking, unscripted. Production hasn't given me a number for how many participants will be at the table, and I'm not sure they'll know till shoot day. How would you mic this scenario if lavs weren't an option? I was wondering about hanging two cardioids from the ceiling and recording to separate channels, but feel like that's not necessarily the best option. Looking for recommendations. What say you?
Last reply by stacysound, -
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- 2 replies
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For those of you who want to dig a little deeper into the SuperSlotTM open standard .... http://superslot.org/
Last reply by soundtrane, -
- 1 follower
- 4 replies
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Have an old 302 mixer. Works fine, but the LED ribbon is either broken or unseated. I could most likely buy a part from Sounddevices or just look up the part number and find it from an electronics supplier. However, I cannot get to the actual ribbon. It's sandwiched between the two boards. I took the rubber knobs off of the pots. Seems like the nuts are holding it together from the front side. Any idea as to any things I need to do to disassemble the unit enough to get to the inside? Many thanks.
Last reply by Philip Perkins, -
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- 2.7k views
T. Aukofer Chief Engineer Frisco Classic Stereo Productions Bay Area CA A slightly adapted and updated version of a paper I did in junior high. http://78rpmrecord.com/altformat.htm ANALOG: REEL (AUDIO): Quarter inch and half inch (single, two, three and four track,) plus: CONSTANT LINEAR VELOCITY (CAPSTAN DRIVE): Quarter inch 8-track (Fostex E- Half inch 8-track (Tascam 38) Half inch 16 track (Fostex E-16---must borrow deck, check for availability) NAGRA SYNC QUARTER-INCH, EIGHTH-INCH EDISON VOICEWRITER (3-INCH TAPE/HOME LIBRARY SYSTEM) 32-TRACK MCI (3-INCH TAPE) SPEEDS: 15/16, 1-7/8, 3-3/4, 7, 1/2, 15 SPEEDS (ODD): 22 1/2, 11-1/4 6-1/8, 3-1/16 …
Last reply by Celac, -
- 1 follower
- 23 replies
- 3k views
great effort by Peter Grey http://petergray.org/lockits.html wolf at wolfvid.com
Last reply by studiomprd, -
- 1 follower
- 5 replies
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I have a question about the Aaton Cantar X2, I know a lot of mixers use it so figured would be a good place to ask questions, I have been using the Cantar for a couple months now, and love it. Its a great machine, but very complicated to use. I know its probably not the best recorder to first start out with but I like a challenge. My question is, the mixer faders on the top of the Cantar, do I have to assign the tracks or mics to those faders? Or am I just crazy and they are there for a different reason? And yes I have read the manual but translated from french to english it makes 0 sense. I had to get a friend of mine that speaks french to read the french version…
Last reply by Alan A, -
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- 11.4k views
Marc Wielage has kindly provided a .pdf of the telecine specifications and capabilities he presented at our union seminar awhile ago. There may be some updating required but for the meantime this is a valuable and instructive document regarding our evolving workflow. Regards, Jeff Wexler
Last reply by Jeff Wexler, -
- 5 followers
- 70 replies
- 21.2k views
OK everyone. I'm off work and I have nothing to do but to read this board. And there's an epidemic of "What frequencies to use in......." -threads so I figured; why not make a Google Document Spreadsheet that ilsts all of these "OK" frequencies to use in different countries? We are legion on here, from all over the world so acquiring the info from locals wouldn't be that hard. Let's give it a try at least. This is the link for it. I contributed with Sweden. https://docs.google.com/a/tjockishjartafilm.se/spreadsheet/ccc?key=0AgnGQulSs_YrdFAwZGZ2LWVjRkRuY0owOEtHcHZqclE#gid=0 Anyone can edit or add information. You don't need a google account to edit If…
Last reply by LoganSound, -
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Can a BWF, with Time Code be treated just like a Wave file without Time Code? Yes it can. But, if a BWF file is created with the wrong Time Code can it still be synced to a picture file in an editing program like FInal Cut? Such as ignoring the Time Code and just syncing manually to the Slate clap. Does the Time Code frame rate effect the actual “clocking” or “speed” of the recording making it impossible to match to a picture recorded with a different Time Code? Can an audio track be re-striped with new Time Code? T h a n k s for y o u r help.
Last reply by studiomprd, -
- 1 follower
- 55 replies
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...or at least we should know them, or learn them, as they keep coming up! for example, we keep getting asked about interference issues amongst transmi9tters and receivers: "Desensing or receiver desensitization: Desensing occurs when a transmitt er is operating in close, physical proximity to a receiver, even if that transmitter is not on or near the receiver’s operating frequency. Receiver desensitization occurs because receivers must maintain critical voltage and current levels throughout the frontend stages and a strong (i.e. physically close) transmitter can cause these levels to vary greatly. As these levels widely fluctuate, the receiver performance will…
Last reply by Wandering Ear, -
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We all have been dealing with Time Code since it was introduced. Why is it still so expensive and hard to make work. Shouldn’t there be a single mass manufactured chip that has all Time Code functions built into it, that can be used in all devices? I had a Zaxcom Fusion that when a IFB 100 transmitter was plugged into the TC on the Fusion, it froze the whole machine. When the Red camera first came along it took several years to get the TC bugs worked out. (There still may be ongoing problems). On the show I’m on now, when the DIT’s Time Code Generator gets hot we loose code. He’s on the latest, greatest Codec system. I know that every one of you ha…
Last reply by mikewest, -
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Hello, I've searched this website but haven't found a solution to my issue. Sending 23.98 fps LTC timecode to a Pulse from SD633. The Pulse is connected to the AtomosX via RF signal. As you can see in the photos, all the units are synced perfectly. When I sync the video and audio in post it's off by 4 frames consistently throughout. I was wondering if there was a solution to this where it could be perfectly in sync when matched in post. Thanks!
Last reply by johnchay, -
- 10 replies
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Hope there is someone that might be able to help with this... I'm doing sound on a multicam live event shoot this week. The record and edit frame rate is set to 23.976FPS (NDF) and thus I will be recording at 48kHz. There will be a sequence that will require playback and I am intending to send timecode from my audio system to each camera using wireless link. I will probably also try and get a smart slate on set so that there is at least some visual representation of the timecode. Unfortunately my audio playback system doesn't support 23.976ND fps - the lowest timecode rate it will go to is 24fps. This means I can't generate timecode at the right rate for pl…
Last reply by Marc Wielage, -
- 32 replies
- 5.8k views
hi guys, i m starting a project with a arri alexa camera and they want to run it at 24 frame rate. i record on a sound devices 744t. every project so far i did was 23.976. i presume that i should set my recorder at 24 as well. apparently post could deal with any frame rate choice but i rather run the optimal way, any toughts on that? thanks, Dominique
Last reply by Jim Gilchrist, -
- 4 followers
- 6 replies
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Hello, I am trying to understand how are RF power measurements made, how to check that a transmitter has the right RF power output, how to test RF antenna cables insertion loss, etc... I got myself a little gadget that is supposed to measure RF power outputs in dBm and mW. But it is a cheap stuff and I am getting weird results, like higher measure when adding cables... Before I dismiss it completely, I realised I need to actually understand what is it I am supposed to get. So, for those of you RF insiders, what is the correlation between the rate of a transmitter power and what is measurable at the antenna output? in other words, if I have a transmit…
Last reply by LarryF, -
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Tri-Level Sync in a Bi-Level World by Dave Pincek, Vice President of Product Development The advent of HDTV has brought a number of new concepts and technologies with it. One of the concepts put into practice is tri-level sync. Tri-level sync solves some traditional problems found with bi-level sync. Although tri-level sync is preferable with the new television system, we still find ourselves interfacing to systems capable of handling only bi-level sync. Therefore, the need exists to convert from tri-level to bi-level sync on occasion. This Tech Corner will acquaint the reader with the new tri-level sync format and its relationship to bi-level sync. Bi-Level Sync…
Last reply by VASI, -
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- 908 views
Hi Ive been asked to somehow send convert tc from my playback laptop to a momentary switch triggering a doggicam rig next week. any ideas? Thanks Hunter
Last reply by roundbadge, -
Anyone here use TrueRta Software? I would like to disucss test results.
Last reply by studiomprd, -
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- 1.5k views
Jonny one note keeps reminding us how easy it is to get information for ourselves... one of the better places to get up to date TV station information is still www.antennaweb.org
Last reply by studiomprd, -
- 1 follower
- 14 replies
- 10.9k views
Files weren't copied off the Zoom H6 and the owner had already managed to format the unit. Fortunately as it turns out the owner's not too tech savvy so he used disk utility to format the 8gb lexar (premium series) SD card, and hadn't recorded anything on it. I have the card, I did some recovery and managed to recover the Wav files. Problem is, the files are broken. I watched and read through mutliple tutorials and I couldn't manage to un-corrupt the files but I was left with the impression that it could be done. I would love to know definitely if these files are 100% recoverable, then I'd know how to proceed with the client. I uploaded th…
Last reply by cmgoodin, -
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- 6 replies
- 1.8k views
Any help in identifying these antenna would be much appreciated. Thanks RL
Last reply by Rachel Cameron, -
- 12 replies
- 3k views
Hey Guys! So I have big project coming up that I will be doing a lot of traveling for. I will be OMBing it. The shooting locations will primarily be high-altitude, cold environments, probably mountainous. I will be using a SD 664 for recording. My other gear includes and ME66, 2x Senn G3s with a B6, and TL40 lavs. I will be renting a Rycote zeppelin system as well. Primary cameras will be DSLRs (5d), and a high speed camera as well. The content will be primarily single subject interviews of athletes documentary style. So the interviews will take place indoors and outdoors in a variety of conditions. There may be action shots also of the athletes …
Last reply by cmgoodin, -
- 12 replies
- 1.9k views
It's a longer story than needs to post here, but bottom line is : I need to fabricate a cable that brings battery power into the USB-C power port on this new mixer. Q : does anyone know the acceptable range of DC input voltages? The only power arrangement I can fabricate here, while waiting on shipments, will put aprox 14.4 volts into the port, way higher than the 5 V DC that comes with the wall power supply. (as everyone probably knows, the mixer/recorder will give aprox 60 mins run time with the standard 4xAA power module). Standing by with cable cutters and soldering iron! Grant.
Last reply by James Louis, -
- 7 replies
- 2.6k views
I know this is possible and tried searching for it, but was unable to find any details. I was interested in using some of my Sennheiser's as an IFB since my Comteks got stolen. I'm using the 552 now and I'm feeding the transmitter from the mono mic out of the mixer. I'm just not sure on the setup for the receiver. What is the setup for using headphones with the receiver? Is it useful to have an inline (manual) volume adjustment on the headphones? Are there specific settings that need to be set on the receiver? Best, Palmer
Last reply by PTA,
