Hi all!
This is my first post here, as I generally didn't have an issue with the old and trusty DR-40 (not x), until yesterday. The issue is so strange, I can' recognize the culprit.
So, I was recording some helicopter audio for my own needs, and in this case, DR-40 was sitting on a copilot seat during the whole flight. Internal mics gain was at 25 just in case, and I had dual mode enabled with -6db backup recording. I'm recording everything in 96khz, 24bit WAV, because it has less static hiss compared to 48/44khz, I've tested it in detail.
Anyways, recording sounds fine when the helicopter was on ground. As soon as it started gaining speed after takeoff, strange popping appeared on the left channel, and lasted all the way to the landing. I'm really not sure was something on the copilot seat, left from the recorder, making some vibration noise during the flight, or DR-40 just can't deal with that amount of pretty loud sounds, or loud low frequencies, even at mics gain at 25. Note, popping is audible even at -6db recording. Interestingly, when I was recording helicopter engine start, I had mics gain at 50, and had slight clipping on the main recording, and no popping audible, so I really hope so it was something vibrating. Main recording of the flight was at 25 mics gain, and is around -12db on average, so it wasn't clipping at all.
I'm just checking with the more experienced guys, can DR-40 mics cope with high amounts of loud audio, or I need to save money for Tascam Portacapture X6, since it's 32bit and you feel a lot safer in really loud environments?
Here is the short sample from the recording, so hopefully you can help me to find the culprit. Thanks!
Popping.mp3
This is my first post here, as I generally didn't have an issue with the old and trusty DR-40 (not x), until yesterday. The issue is so strange, I can' recognize the culprit.
So, I was recording some helicopter audio for my own needs, and in this case, DR-40 was sitting on a copilot seat during the whole flight. Internal mics gain was at 25 just in case, and I had dual mode enabled with -6db backup recording. I'm recording everything in 96khz, 24bit WAV, because it has less static hiss compared to 48/44khz, I've tested it in detail.
Anyways, recording sounds fine when the helicopter was on ground. As soon as it started gaining speed after takeoff, strange popping appeared on the left channel, and lasted all the way to the landing. I'm really not sure was something on the copilot seat, left from the recorder, making some vibration noise during the flight, or DR-40 just can't deal with that amount of pretty loud sounds, or loud low frequencies, even at mics gain at 25. Note, popping is audible even at -6db recording. Interestingly, when I was recording helicopter engine start, I had mics gain at 50, and had slight clipping on the main recording, and no popping audible, so I really hope so it was something vibrating. Main recording of the flight was at 25 mics gain, and is around -12db on average, so it wasn't clipping at all.
I'm just checking with the more experienced guys, can DR-40 mics cope with high amounts of loud audio, or I need to save money for Tascam Portacapture X6, since it's 32bit and you feel a lot safer in really loud environments?
Here is the short sample from the recording, so hopefully you can help me to find the culprit. Thanks!
Popping.mp3
