Hello forum members,
I'm new here and I'm very pleased I could find a dedicated forum with so much activity, especially in the field of mobile recorders. Thanks for letting me join
Since I'm new at mobile recording I was wondering, how well the internal mics usually match in a mobile recorder. The only case I found dedicated data, was for the Sony PCM-D1, which says, the mics are matched within 1dB. What does that mean actually? Does it mean, that with the same gain setting for both channels, a level difference of 1dB would be tolerable? Sound quite a lot, otherwise I learned that 1dB mathching is a quite good value for a matched pair of microphones. Moreover you can set the gain for each channel separately for compensation anyway.
I recently bought a PCM-M10 which I really love. I did some test with internal mics. I found, that at lower frequencies , e.g. when talking towards to mics or making noises with your mouth, the left channel seems to be a bit more sensitive (approx 0.7-1.0dB). Otherwise when recording higher frequencies, e.g. water in the shower or playing around with metal keys, the right channel seems to be bit more sensitive (approx 0.5dB). Is this behavior normal for this device? From my basic theory about microphone matching it would mean, that the mics are matched within approx. 1dB. Does anybody have similar experiences with the M10 or other recorders in the same range?
BTW: Does anybody know if there's a hidden test mode in Sony PCM-recorders like in the Roland R-09HR?
Thanks for your help