karlw Posted February 26, 2019 Report Share Posted February 26, 2019 Some of the intrepid members here have already guessed, quite accurately as it turns out, what we are announcing today: https://www.lectrosonics.com/US/DCHT-Digital-Camera-Hop-Transmitter/product.html -Karl Quote Link to comment Share on other sites More sharing options...
ryanpeds Posted February 26, 2019 Report Share Posted February 26, 2019 Quote Link to comment Share on other sites More sharing options...
codyman Posted February 27, 2019 Report Share Posted February 27, 2019 Looks like a great way to make an AES hop to an Amira / other AES enabled cameras. Throw a couple of AA's and attach one cable, done! Quote Link to comment Share on other sites More sharing options...
allistair Posted February 27, 2019 Report Share Posted February 27, 2019 This is just a digital transmitter. They don't have a receiver for it with AES out yet, but I hope that's in the works. Quote Link to comment Share on other sites More sharing options...
VASI Posted February 27, 2019 Report Share Posted February 27, 2019 15 hours ago, allistair said: This is just a digital transmitter. They don't have a receiver for it with AES out yet, but I hope that's in the works. For SR Receivers: http://www.taiaudio.com/lectrosonics-sraes3-sr-receiver-adapter-plate/ Quote Link to comment Share on other sites More sharing options...
Johnny Karlsson Posted February 27, 2019 Report Share Posted February 27, 2019 14 minutes ago, VAS said: For SR Receivers: http://www.taiaudio.com/lectrosonics-sraes3-sr-receiver-adapter-plate/ Correct me if I’m wrong, but I don’t believe any of the current SR receivers can receive a didgital transmission. Quote Link to comment Share on other sites More sharing options...
Gordonmoore1 Posted February 27, 2019 Report Share Posted February 27, 2019 That is correct - this is full digital and not compatible with SR receivers. View this as the tip of the spear of the next generation or tumbleweed pollen if you prefer...... Quote Link to comment Share on other sites More sharing options...
VASI Posted February 28, 2019 Report Share Posted February 28, 2019 I thought it was a digital hybrid. Thank you! Quote Link to comment Share on other sites More sharing options...
PCMsoundie Posted March 6, 2019 Report Share Posted March 6, 2019 Let's talk about DCHT (Digital Camera Hop Transmitter) specs. Lectrosonics makes 3 digital wireless systems: DSW System Encrypted Digital Wireless System using DBa Belt Pack Transmitter ANALOG INPUT ONLY Sampling Size and Rate:24-bit, 48 kHz Audio Frequency Response:20 - 20 kHz, +/- 1 dB Digital Modulation:8PSK D4T Digital Hybrid Wireless Diversity Transmitter 2 or 4 channel operation line level analog audio signals and AES/EBU digital audio signals 48 kHz/24-bit audio, ruler-flat 20-20000 Hz frequency response and now just announced in 2019 DCHT (Digital Camera Hop Transmitter) The DCHT accepts two channels of mic or line level analog signals or an AES digital signal from a mixer and transmits to the receiver or receivers in a purely digital format. Frequency Response: 20 Hz -10.5 kHz ± 1 dB Compatibility Modes: • DCH (Digital Camera Hop) Digital Modulation: 8PSK Specifications subject to change without notice On Gotham Sound website they list: Frequency Response 20 Hz – 14.5 kHz ± 1dB On the manual's DCHT Block Diagram is a "Rate Converter" So that would mean the AES3 digital 24-bit/48kHz signal is getting SRC (Sample Rate Converter) to 32kHz inside the DCHT before transmission? DCHT Ok for most dialogue but not music. Opinions? Quote Link to comment Share on other sites More sharing options...
Constantin Posted March 6, 2019 Report Share Posted March 6, 2019 48 minutes ago, PCMsoundie said: So that would mean the AES3 digital 24-bit/48kHz signal is getting SRC (Sample Rate Converter) to 32kHz inside the DCHT before transmission? Why do you think 32k? Is there a mention of that somewhere? SRCs are often used on digital inputs when an external clock signal (like wordclock) is not available, or if not all digital devices used can be clocked. 51 minutes ago, PCMsoundie said: DCHT Ok for most dialogue but not music. Opinions? I have not yet heard the system myself, nor have I looked at any official material whatsoever. But purely based on the numbers you listed, why would this not be suitable for music? Quote Link to comment Share on other sites More sharing options...
Shastapete Posted March 6, 2019 Report Share Posted March 6, 2019 the M2T and M2R show the same specs and no one has had complaints Quote Link to comment Share on other sites More sharing options...
Tom Visser Posted March 6, 2019 Report Share Posted March 6, 2019 I've often referred to this chart when making decisions about filters for music recording purposes... http://www.independentrecording.net/irn/resources/freqchart/main_display.htm For purposes of IFB for film and television - not an issue. For purposes of IEM for musicians, not an issue either. If you are recording percussion instruments and planning on using this as a critical part of the signal chain, yes it will filter out harmonics and "air" - not part of the instrument sound itself, but some of the overtones that add to the sound in the end. Quote Link to comment Share on other sites More sharing options...
Constantin Posted March 6, 2019 Report Share Posted March 6, 2019 Frequency response 20Hz - 10.5kHz +/- 1dB does not mean transmitted signal will top out at 10.5kHz. It just means that it will deviate by more than +/-1 1dB from the „ideal“ line. In practice this often means that the frequency range is often not that much higher, but not necessarily. Some manufacturers also publish frequency range figures in addition to frequency response... Quote Link to comment Share on other sites More sharing options...
mano Posted October 8, 2019 Report Share Posted October 8, 2019 On 3/6/2019 at 10:11 PM, Constantin said: Frequency response 20Hz - 10.5kHz +/- 1dB does not mean transmitted signal will top out at 10.5kHz. It just means that it will deviate by more than +/-1 1dB from the „ideal“ line. In practice this often means that the frequency range is often not that much higher, but not necessarily. Some manufacturers also publish frequency range figures in addition to frequency response... I asked a local reseller and he told me the DCHT cuts off hard at 10.5 I also heard they raised that number by a firmware update? Or is all of this incorrect? Thanks Quote Link to comment Share on other sites More sharing options...
LarryF Posted October 8, 2019 Report Share Posted October 8, 2019 Data sheet now lists -3 dB at 11.3 kHz. Probably exactly the same specs as before just 3 dB point instead of 1 dB point. The cutoff is not due to sample rate but bandwidth restrictions (occupancy) of two audio channels under FCC rules and EU rules. Bandwidth occupancy for 0 Hz to 10 kHz is the same as for one single octave of 10 kHz to 20 kHz. Tossing away that upper octave allows two channels of audio information. It's not what I'd pick for my hi-fi system but that's not its purpose anyway. Plus at my age, a 10k range is becoming overkill. Best Regards, Larry Fisher Quote Link to comment Share on other sites More sharing options...
Ontariosound Posted October 12, 2019 Report Share Posted October 12, 2019 Long time Lectro owner. Multiple units in regular use. This device is not turning my crank. Seems late to the party and under spec'd. Quote Link to comment Share on other sites More sharing options...
Constantin Posted October 12, 2019 Report Share Posted October 12, 2019 On 10/8/2019 at 7:17 PM, LarryF said: Tossing away that upper octave allows two channels of audio information. Perhaps a good idea could a mono and full range system in the future then. OTOH a system topping out around 12k or whatever might actually be beneficial for an ifb system 6 hours ago, Ontariosound said: Seems late to the party and under spec'd. What do you mean by „seems late“? Either it is late or it isn’t. And late for what? Considering there aren’t many digital ifb systems on the market today, you could also say it’s right on time. Which specs would you like to be higher? Quote Link to comment Share on other sites More sharing options...
LarryF Posted October 14, 2019 Report Share Posted October 14, 2019 On 10/12/2019 at 1:23 AM, Constantin said: Perhaps a good idea could a mono and full range system in the future then. OTOH a system topping out around 12k or whatever might actually be beneficial for an ifb system Seems like a good idea and should be relatively easy to do. I will pass it on. Best Regards, Larry Fisher Quote Link to comment Share on other sites More sharing options...
carbonhobbit Posted October 14, 2019 Report Share Posted October 14, 2019 Has any thought been put into completing the camera hop system with a receiver with a six pin plug to be a reverse of the transmitter for us so we (sound people) don't have to worry about the cable now used with the IFB unit coming unplugged at the camera? I also see the on/off volume knob going away. The old receivers would become very high end IFB's for directors, producers and Red Cameras. Scott Quote Link to comment Share on other sites More sharing options...
dsound Posted October 14, 2019 Report Share Posted October 14, 2019 14 minutes ago, carbonhobbit said: Has any thought been put into completing the camera hop system with a receiver with a six pin plug to be a reverse of the transmitter for us so we (sound people) don't have to worry about the cable now used with the IFB unit coming unplugged at the camera? I also see the on/off volume knob going away. The old receivers would become very high end IFB's for directors, producers and Red Cameras. Scott My thoughts exactly! How hard would it be to include a threaded connector on the M2R, a simple solution...go figure! Quote Link to comment Share on other sites More sharing options...
PhilDent Posted February 20, 2020 Report Share Posted February 20, 2020 On 10/14/2019 at 8:50 AM, dsound said: My thoughts exactly! How hard would it be to include a threaded connector on the M2R, a simple solution...go figure! On more than one occasion a camera op has inadvertently unplugged the mini connector out of the M2R. Now I use a piece of gaff tape to prevent this - not elegant but effective. Also, I've had ground loop issues with the wooden camera A-box and the M2R. A hum occurred on both channels when I powered the M2R from the 2 pin Lemo on the Alexa Mini. The issue resolved when I powered the M2R with AA batteries. I'm curious if anyone else has run into this issue or found a solution for it. Quote Link to comment Share on other sites More sharing options...
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