Constantin Posted January 16, 2013 Report Share Posted January 16, 2013 Hi everyone, a friend of mine had a funny experience with an ME-2 (G2) wireless mic and an induction cooker (stove?) while shooting in a kitchen. The sound changed dramatically whenever the cooker was switched on. Like using an extreme denoiser. Has any of you ever experienced something similar? I suppose technically, especially with a dynamic mic, this could be a likely problem? But then the ME-2 is not a dynamic mic. Quote Link to comment Share on other sites More sharing options...
soundslikejustin Posted January 16, 2013 Report Share Posted January 16, 2013 Hi everyone, a friend of mine had a funny experience with an ME-2 (G2) wireless mic and an induction cooker (stove?) while shooting in a kitchen. The sound changed dramatically whenever the cooker was switched on. Like using an extreme denoiser. Has any of you ever experienced something similar? I suppose technically, especially with a dynamic mic, this could be a likely problem? But then the ME-2 is not a dynamic mic. Considering an induction cooker is basically a giant electromagnet, I wouldn't be surprised if it caused some kind of interference. Quote Link to comment Share on other sites More sharing options...
Karri Posted January 16, 2013 Report Share Posted January 16, 2013 Yep, same thing happened with my G3's (OST TL-40) and and induction stove. One of those things you probably wouldn't realize to watch for, before it happened to you, I guess. Quote Link to comment Share on other sites More sharing options...
LarryF Posted January 16, 2013 Report Share Posted January 16, 2013 The Sennheisers have multiple pre-emphasis circuits around their companders and have three entry points, so to speak, for supersonic audio frequencies. Induction cook stoves for iron pots run at frequencies of 24 kHz and this frequency is the most common. Since 24 kHz is barely above the audio band, it is not filtered out effectively and was probably driving the compander nuts, even if the amount of 24 kHz was at a low sound pressure level. If you were more than a few feet away from the stove, it probably wasn't direct magnetic interference. Best, Larry F Lectro Quote Link to comment Share on other sites More sharing options...
studiomprd Posted January 16, 2013 Report Share Posted January 16, 2013 " especially with a dynamic mic, " though induction can get into the wiring of condenser mic's, what Larry said is probably more pertinent, and goes to discussions of why we roll off lows and highs, and any discussions of 96kHz sampling providing better audio frequency response! Quote Link to comment Share on other sites More sharing options...
soundslikejustin Posted January 16, 2013 Report Share Posted January 16, 2013 The Sennheisers have multiple pre-emphasis circuits around their companders and have three entry points, so to speak, for supersonic audio frequencies. Induction cook stoves for iron pots run at frequencies of 24 kHz and this frequency is the most common. Since 24 kHz is barely above the audio band, it is not filtered out effectively and was probably driving the compander nuts, even if the amount of 24 kHz was at a low sound pressure level. If you were more than a few feet away from the stove, it probably wasn't direct magnetic interference. Best, Larry F Lectro Amazing. Thanks Larry! Quote Link to comment Share on other sites More sharing options...
Constantin Posted January 16, 2013 Author Report Share Posted January 16, 2013 Amazing. Thanks Larry! Indeed! Thank you. Senator, yes, but the the stove was influencing the wireless mic. There is no way, that seems at all practical at least, to lo/hi cut the G2 system. When the compande starts acting up it cannot be saved by having a cut in the recorder. It would have to be between the mic and the transmitter, wouldn't it? Quote Link to comment Share on other sites More sharing options...
studiomprd Posted January 16, 2013 Report Share Posted January 16, 2013 " the the stove was influencing the wireless mic." exactly... induction occurs in a lot of circumstances, so no surprise that an induction cooker would be a source of induction, and the condenser / dynamic mic choice does not affect all induction... sorry, my reference to the effects of24kHz audio on companders and other electronic circuits is a different thought Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.