MT Groove

Ok, I just did some tests on this. This is probably not the most accurate test out there but it does shed some light. Sorry but this is kinda long.... I set both Boom Recorder and the Tascam HD-P2 to receive LTC from the same source (a Tascam DA-88 with the SY-88 time code card option). I spilt the timecode output of the DA-88 feeding both the Traveler and the HD-P2 simultaneously. I set the DA-88's timecode to generate at past 19hrs so timecode issues would be more noticeable if it occurs as suggested by Courtney? I then feed the same audio to both systems simultaneously from my mixer. First test: Both systems clock were set to SMPTE, 30ND and 48k throughout. I recorded a vocal slate and a series of claps at the beginning, then let it run for about 5 minutes, then record a series of claps again at the end. Second test: The Tascam HD-P2 remained the same settings. However, I set the Traveler's Frame Rate to 29.97ND in the MOTU SMPTE Console. In Boom Recorder, I set the Frame Rate to 30ND, Hardware Rate to 48k and File Sample Rate to 48k. I once again recorded a vocal slate, a series of claps at the beginning, let it run about 5 mins, and then claps at the end. Then the files goes into my studio DAW (Samplitude Professional). I set the project frame Rate to 29.97ND, 48kHz. I set it to import the WAV files into the respective timestamp position. First recordings: Both files lined up near perfectly and plays in sync throughout. I zoomed in all the way to sample level looking at the waveforms and the 2 files were offsetted approximately 15 samples apart consistently at the beginning and at the end (I guess this would be equivalent of around 0.0093 of a frame?) This should be acceptable. I'm using this first recording as a baseline. Second Recording: From the beginning I can hear slight flanging and towards the end they were obviously way off sync. I then take the file recorded by the HD-P2 and slowed it down 0.1% (I used a stretch factor of 1.001; resample mode). I visually line up the claps in the beginning of the files, then go to the end. They now seem to sync. I zoomed in to sample level noticed that they were approximately 13 samples apart at the end of 5 minutes. Based on this test, it seems Take Vos' suggested method works. The Traveler clocking to SMPTE essentially sped up doing the equivalent of recording the file at 48.048k. Upon playback at 48k, the recording automatically get's pulled down. Slowing down the HD-P2 recording by 0.1% would be the equivalent of a telecine analog transfer pull down? I have been racking my brain trying to figure this whole thing out. Please let me know if there are any flaws in this test. Please point it out to me if my math is off. Ultimately, the true test is when the files goes to post after the shoot. However I would like everyone's opinion on this. Thanks.....sorry for the long post.

Hi, new poster here. Awesome forum!!!! I'm about to use boom recorder on a 35mm feature and got a few questions. I'm using a MOTU Traveler along with a Macbook Pro and a Tascam HD-P2 for backup. I'll be syncing with a Denecke timecode slate and a SB2a sync box. I'll be using a I'm trying to figure out what's the best way to deliver 48.048kHz 30ND fps to post. I emailed Take Vos about this and he suggested that I try tricking the system by setting the Traveler to clock to SMPTE and setting it to 29.97ND. Then feed 30ND timecode into the Traveler, setting Boom Recorder to 48k Hardware and 48k file. The Traveler will then supposedly clock it at a pulled up rate? Then upon playback during Telecine at 48k it will already be pulled down. Has anyone tried this method successfully? It seems this whole pull up/down issue is being discussed a lot and there's still a lot of inconsistencies about how it's supposed to be done. Any advice is greatly appreciated. Phillip Perkins already made a few comments about this on another forum. I'm looking for more input. Thanks

The instrument inputs of the Traveler can handle both -10 and +4. You Switch it within the MOTU CueMix Console.