Jump to content


  • Content Count

  • Joined

  • Last visited

  • Days Won


About Constantin

  • Rank
    Hero Member

Contact Methods

  • Website URL

Profile Information

  • Location
    Cologne, Germany
  • Interested in Sound for Picture
  • About
    mostly cart-based, but also bag-based commercials, corporate, documentaries, etc.<br />
    To contact me away from jswoundgroup, please use:<br />
    mail {at} constantinbomers.com <br />
    (leave out blanks and brackets, and replace at with @, of course)

Recent Profile Visitors

6,413 profile views
  1. Constantin

    Comparison of different transmitters

    You are absolutely right. Whatever can be heard in differences here, would be far more pronounced in real life, so to speak. The thing is, when it comes to data compression rates, we have no tools at our disposal, the manufacturer gets to decide that. Of course, the differences are not „in your face“ obvious, that’d be crazy. No they are subtle here, but on location it becomes far more obvious (when listening back later). As I said in the other thread, I just watched online a recent tv movie I did. Now, once all that gets on the air it will have gone through various compression stages and data conversion/compression and whatever else. By the time they post it online this gets even worse, by adding even more of their own data compression. All of this does not help with the „problem“ I‘m trying to point out here. Ok, I wasn‘t aware. NeverClip shouldn’t really come into play in these particular samples, but a better A-D could help. I can’t really add it now, though, unless I shuffle all file names, bracause it would be obvious which one would be it...
  2. Constantin

    Comparison of different transmitters

    If you are listening to the ambience you are listening to the wrong this. What I was talking about only manifests itself in the dialogue. I did too, but I don’t have access to a Wisycom tx. Yes of course. It’s not a scientific test by any means. I don’t even have a vocal booth. Well... I do, but it’s not set up yet. Well, that is not the case. Two people sitting at a table indoors talking, there’s no ambience to speak of. It’s not hiss I am talking about, think Mp3 compression... I‘m going to have to refer to my regular post team here, and believe them when they say that they cannot easily bury it or get rid of it. This is even more so when they need to EQ a passage anyway, maybe because the boom couldn’t get right on top or whatever and they just want to add some air, that becomes far more difficult as that will accentuate the transmitter noise It‘s a bit of a shame you did it that way, as you are meant to find out by listening, not looking
  3. Constantin

    Audio Limited A10 for talent.

    I have just now created a new thread. I think it's better to move this to its own topic. I have uploaded four files there, so everyone can have a listen, and please comment. Sure! I don't know if they used a ZMT, I don't even know for a fact if they used any Zaxcom gear, so it's a bit risky perhaps for me to claim this, but it just really sounds like it. I am fairly sure the noise is a product of the compression algorithm, it's best comparable to a good MP3, I'd say. So the compression would take place in the tx. I did not compare any internal recordings to my transmitted recordings, though. It's difficult to describe (but you can listen for yourself over on the other thread), but it's probably most similar to what Mp3 compression does to your audio. This does vary a bit with the mic used, but I think that's only really because it seems to affect higher frequencies the most, and some mics accentuate those more than others. I have for now only posted the test with my DPA 4017B, but I have repeated it with the DPA 4017C, Schoeps CMIT, Schoeps CMK641, Sanken CS3e and Sennheiser MKH8060. I could post those files later, too. Didn't want to put too much stuff on the server, as I didn't compress these files, obviously. Of course, there is some truth in there, I guess. However, I feel repelled by over the top marketing, and that applies to any company. Any sympathy I may felt towards a company can evaporate completely, if I hate their ad campaign and especially how they behave on social media (and here). This is why, as an example, I will never buy the transmitter straps from a certain company, and I very nearly said goodbye to DPA after their stupid "game changer" campaign. That's just me, of course, but I still see more potential for driving customers away than attracting them with the wrong style.
  4. Constantin

    Comparison of different transmitters

    Following on from this thread: I would now like to post an abbreviated version of my transmitter noise comparison. As mentioned in the linked thread, on the request by my regular post team I have set up a test to compare the noise created by various transmitters. Originally, this as I didn't know what I was looking for, this test also included several microphones, but here we are only really discussing the noise of digital transmitters, so I'll focus on just one microphone, the DPA 4017B. First, the boring stuff: The setup: I recorded myself reading an excerpt from a random book I had around. This is in German I'm afraid... To record this I used an AKG 4000B, because it has very low self noise and because this mic was certain to not be part of the mic comparison. I recorded this via cable into a 788T. I played the file back from this 788T and recorded the comparisons into a second 788T. I played the file back through an Alesis (I think) amp into HHB Circle 5 speakers. Not exactly a high-end setup, but out of what I had available it seemed the quietest setup. Since these parameters are the same for all transmitters it seems fair. The speaker sat on my desk and the mics were mounted on a stand at 95cm from the treble cone. Once the mic was mounted I didn't touch it until I had recorded all variables. Before recording I played a Line-up tone through the speaker at -20 to attempt to get all tx to the same gain setting. It's not very easy to set all these tx at exactly -20... After recording, I loaded all files into ProTools, cut off the beginning and end and then normalized them. So the peak level should be the same on all files. That's it, I think. The following transmitters are featured here: Audio Ltd. A10, Lectrosonics HM, Zaxcom ZMT3-phantom. The fourth recording was made straight through a cable. I originally included the Zaxcom 742.6 as well, but decided against it here, as I think it's more balanced to have just one transmitter per manufacturer. Please note, the order in which I listed the tx above is not the order in which they are listed below. I'd like to keep it anonymous for the time being, so everyone can have an unbiased listen. Please note: This comparison is only meant to highlight noise differences. It is not really suited to reveal differences in sonic quality. Or rather, it does reveal differences, but they are not conclusive. Also, obviously, things like range, etc. do not factor in here. EDIT: for an unbiased listen, do not look at the spectral diagram or read the comments before you‘ve had a listen. Otherwise you‘d know which one is Zaxcom, by just looking at it, but that’s not the idea. So... now it's your turn. I have to say, I am very very curious to read what everyone thinks... 4017-3.wav 4017-4.wav 4017-1.wav 4017-2.wav
  5. Constantin

    Audio Limited A10 for talent.

    I‘m not writing this to settle on a new wireless system, I have of course drawn my conclusions from my listening tests. I don’t even want to get people to move away from digital wireless, I want the companies concerned to acknowledge this and work on a solution. And I want them to scale back the marketing rhetoric
  6. Constantin

    Audio Limited A10 for talent.

    As far as I have been able to establish this only concerns fully digital systems. Lectro and others aren’t that. Well, I’m in a lucky situation here, in that I am working on 4-5 TV movies every year and it’s always the same post team. They said on many other jobs they don’t bother, but here we have a good working relationship, so why not perfect the audio as far as possible. And I know these guys will have my back whenever there’s a director there with them who bitches about the audio that he himself caused by choosing a bad location. So I‘ll try hard to keep them happy. They also said if I couldn’t figure it out, everything would be fine, as well, it is not a grand issue. But my take away is... well, I sufficiently explained that in previous posts.
  7. Constantin

    Audio Limited A10 for talent.

    You may be right, and I‘m not saying that digital wireless is useless. I‘m just (trying to) saying that there are extraneous noises caused by the digital systems. I should perhaps emphasize more that I would only consider this an issue for boom mics. With lavs I tend to agree to the above comments of technology vs placement. What does get me riled up to a degree is the marketing jargon like: “rivals a cable“, „insanely good“, etc. That is simply not the case. And it isn’t the case for any wireless.
  8. Constantin

    Audio Limited A10 for talent.

    I am not talking about a philosophical problem here. Two issues here. The first, we have a manufacturer who in my opinion grossly overstates the sound quality of his products. For the other issue, I‘ll expand a bit: I am talking about digital boom mic transmitters. I used Zaxcom‘s TRX 742 and ZMT for a bit, then Audio Ltd. for a short time. Yes, there is no rf noise, fine. But I kept getting complaints from the post house about hiss on the speech, and just after, before fizzling away. The post guys had tried everything to get rid of that, but weren’t happy, because it would affect the quality of the speech. So they asked me to investigate. On set I couldn’t really hear it, but at home I noticed it too. I eliminated all extra cables on my cart, except for a straight connection from receiver to recorder. Digital out to digital in. Still the noise persisted. Same, by the way, for Zax and Audio. Or very similar. So I set up a blind listening test for my post people. 4 or 5 different mics, four different transmitters, all listening at the same distance to the same recording through the same speaker. I still have those files, if anyone is interested. They made their pick, without ever knowing what it was. Just a few weeks ago, my last film I did with the ZMT aired and I could hear the noise on the air and even through my crap tv. Aaand, next day I watched the 7th season of Homeland and yes I could hear it there, too. This is strictly for boom mics, on lavs I would probably be less critical. This may also matter less on some shows, but this is an audible issue and not at all some audiophile snobbery, and it’s not about numbers, either. I fully expect someone to chime in any moment now about the many great movies and tv shows they did with all digital Zaxcom booms. Fine. Maybe they sounded better in earlier incarnations.
  9. Constantin

    Audio Limited A10 for talent.

    I just wish we could move away from expressions like „insanely great audio“. This kind of hyperbolic rhetoric really is not going to help anyone. And in my personal opinion there is not one single wireless system that actually achieves even great audio, let alone insanely great. Sorry to say this, but to me both Zaxcom and Audio Ltd. so not live up to „insanel great“. Nor does Lectro or Sennheiser or whoever. With both systems I can hear artifacts from compression noise (data compression). I couldn’t care less about the presence or absence of a limiter as long as there are compression sounds. Please, don’t pretend like there isn’t. I can hear it in the final product, too. Post can’t even properly get rid of it. So I think we need to scale back the rhetoric a bit. Yes, the new generation wireless systems sound good, much better than their predecessors. But there is still lots and lots of room for improvement.
  10. Constantin

    Lavs for ties

    I think a DPA pointing down can actually sound really nice. It sounds good if the mount if ok, but it depends more in the material the tie is made of. Also if the guy is quite large and has his chin (or worse stubbly chin) rubbing on the tie there‘s not much to do. On really small ties I‘ll use a B6. I don’t think a special tie mic is required. A good tie mount and a friendly wardrobe dept (to get good ties) is far more useful. Some like the hide-a-mic tie mount, but so far it was always too large for me
  11. Constantin

    UltraSync BLUE - Timecode over Bluetooth from TCS

    That’s a lot of „if“, „should“, „hope“... I don’t get this part I expect the opposite: „well, now that we’ve implemented BT TC, we don’t need to bother with a stable clock“. After all, they haven’t so far
  12. Constantin

    UltraSync BLUE - Timecode over Bluetooth from TCS

    I don’t think I agree with that. First, I don’t want a manufacturer to spent even an hour of developers time on this instead of better firmware or new hardware. Second, I wouldn’t want to have to rely on Bluetooth for TC sync. BT connections get lost all the time and you wouldn’t even know it
  13. Constantin

    UltraSync BLUE - Timecode over Bluetooth from TCS

    Sure, the 633 also has Bluetooth with Wingman, but I‘m pretty sure that none of these devices will natively support TC via Bluetooth.
  14. Constantin

    Custom low-profile braided cables...made to order?

    Not sure if this is the one you’re talking about, but this guy here makes really nice cables. Color braided too, if you want to https://www.ops-shop.de/
  15. Constantin

    UltraSync BLUE - Timecode over Bluetooth from TCS

    But at the moment there are only two apps that are compatible with this. No hardware. This might some potential if could get camera makers to support it, but you’d stiil need at least two different devices unless really every single camera supports this.. I salute their idea, but at the moment it’s more of a „meh“ moment unless that USB port is for syncing, too?