• Content count

  • Joined

  • Last visited

1 Follower

About karlw

  • Rank
    Hero Member
  • Birthday 10/28/1966

Profile Information

  • Location
    Rio Rancho, NM
  • Interests
    Music, good books, astronomy, audio.
  • About
    business development at Lectrosonics, Inc., amateur classical musician, and generally a nerd.
  1. Should be 8-9 hours or so. Hopefully some users can chime in to confirm or deny this estimate.
  2. It will be very interesting to see what happens with the 4th round auctions! We're getting close: they are supposed to close on Jan 13th (this Friday). If anyone is interested in following the auctions, here's a link: https://auctiondata.fcc.gov/public/projects/1000 And if you want a quick tutorial about how the auctions work: http://wireless.fcc.gov/auctions/1001/resources/reverse_auction_new_stage_tutorial/presentation.html
  3. Hear Hear!
  4. For those interested, here's a video Bruce Jones and I made about using the SmartTune and IR Sync features of the SRc receiver. https://www.youtube.com/watch?v=M-5DApspPC8
  5. Hi folks, the latest update for the PDR (v1.10) now defaults to 24 bit recording, and offers greater reliability with a wider variety of Micro SD media. Please update your units with the latest firmware, using the files and info here: http://www.lectrosonics.com/Support/category/93-firmware.html
  6. Thank you, David & Jan. Yes - pretty exciting week around here with this news! I think it is great that the Academy is giving out awards this year for audio technology - it is a rare thing, even though dialog is so central to every movie. Great job to our engineering team, and great job to Glenn & Howie, too. Well done all around!
  7. Just a reminder that Saturday, 12/31 is the deadline for ordering this combo if you want to take advantage of the rebate.
  8. I see that my post (above) has been edited without my knowledge. It is actually factually incorrect now. We have seen latencies in digital wireless systems as low as 0.9 ms (Quadra IEM system - admittedly not a wireless microphone) and as much as 18 ms. Most are in the 2-4 ms range, which is a tiny fraction of a frame. However, it is still important to note that with some wireless systems, delay may be needed to be added to the wired boom if you are mixing it with a lav and the lav is on a digital wireless system.
  9. Just to clear up one potential misunderstanding here. Phase cancellations happen when a source is picked up by two mics at *different* distances. If a voice, say, is picked up by two microphones that are exactly the same distance from the voice, then no cancellation would occur. This ignores the stuff Tom brought up about reflective surfaces. And, as Johnny pointed out, for complete cancellation to occur, you'd need one mic out of polarity with the other. In most real world situations, you'll have two mics that are NOT the same distance from the source, and thus, you'll get some comb filtering, giving you the "hollow" sound mentioned above. And as either the voice moves in relation to the two mics, or one of the mics moves, the sound will change due to differences in phase interactions. Yes, if you ISO either of the mics, you won't hear it. It only happens when the signals are mixed together.
  10. "Phase" and "Polarity" are often confused. Then throw in latency (system) and time of arrival (through air), and it can be difficult to comprehend. I'll take a stab at it. As Philip Perkins mentioned, there is already a time of arrival difference between lav mics and boom mikes of about ~3 to 8 ms, depending on how far the boom mic is from the talent's mouth (sound travels at roughly 1 ft per millisecond). This can not be corrected by inverting polarity on one or the other channels. The only way to correct it (assuming they are mixing the two tracks) is to add delay to one channel to match the later TOA for the other channel. Then there is the issue of latency which is different for different wireless systems. Analog systems (Sennheiser G2/G3, 2000, 3000 & 5000 Series; Audio LTD 2020/2040; Lectrosonics 190/195/200 Series; etc.) has basically zero latency. Any digital system will have at least 2 ms due to the A/D and D/A process, mostly (plus error correction, other processing, etc.).
  11. Yes, the Ambient unit will work for that purpose. The differences are: the MCA5X requires you to set the bias voltage on the transmitter to 5 V. Also, the MCA5X can NOT be used with 48 V phantom power. The Ambient Eumel requires 48 V, and will not work with 5 V.
  12. I case you haven't heard about this, Lectrosonics teamed up with DPA US to offer a $150 rebate for the purchase of an SSM transmitter and d:screet lav microphone. The offer is good through January 20 for customers purchasing these products from US Authorized Dealers. I've attached the form for anyone interested. DPA Lectro Offer Form_FINAL.pdf
  13. An update on the SRAES3 digital output plate: The question came up on the Facebook "Freelance Sound Mixers & Recordists for TV/Film" group: "If you're inputting a few of these [SRc with SRAES3] into a recorder with sample rate converting inputs then syncing them all with wordclock is unnecessary, correct?" In talking with our engineering department, we all agreed that "there is no reason we can think of that it won't work". That's great in theory, but what about a test? So we set up some tests by using two SR receivers, each with the SRAES3 output plates, feeding a 688 via the AES3 inputs. We did not use a word clock master. Each SR was fed by two transmitters, for a total of four channels. First, we tied all four lav mics together with a rubber band so that we would have basically a mono signal going into the four RF channels, thus into the two SRs, two SRAE3 plates, and into two dual AES3 inputs on the recorder. From there, we mixed those four tracks back to to mono (actually we mixed each of those tracks both to the L and R tracks of a stereo file). The results were fine - no phasing, no issues at all. We also then separated the mics & transmitters around the office, and recorded ambience, i.e. room tone. No issues at all. If you're interested, here's a link to the first test file: https://www.dropbox.com/s/s3d2wn4cnyxalwh/T08.WAV?dl=0
  14. New accessory for the ever-growing SR Series product line: http://www.lectrosonics.com/US/lectrosonics-introduces-sraes3-bottom-plate-adapter-for-sr-series-receivers.html
  15. Jon, if the unit you saw was Kelly Fair's demo unit, this was not the final hardware design for the production units. The battery door was beefed up already. Of course time will tell (as it always does) if the design is robust or not.