Tascam DR-05X Stereo Handheld Digital Audio Recorder with USB Audio Interface (Silver) + SR360 Headphones Fur Windscreen 16GB Memory Card Tripod & Xpix AA Batteries With Travel Quick Charger
AUDIO RECORDER 2 MICROPHONES PORTABLE
Tascam DR-05X 2-Input / 2-Track Portable Handheld Digital Audio Recorder (Black) with Deluxe Accessory Bundle Tascam DR-05X Stereo Handheld Digital Audio Recorder with USB Audio Interface + 16GB + Basic Accessories Bundle Tascam DR-07X Audio Recorder/Interface with 32GB SD Card Mic and Card Reader TASCAM - 4-Track Audio Recorder for Select DSLR Cameras - Black 6315900 Tascam DR-10L Digital Audio Recorder and Lavalier Mic with 32GB SD Card Samson Headphones and Deluxe Bundle Tascam Portable Digital Micro Audio Studio Recorder with Lavalier Mic White Tascam DR-10L Micro Portable Audio Recorder with Lavalier Microphone (White) DR-10LW * The Rode NT1-A studio microphone has been added to this comparison only for reference purposes in order to demonstrate the influence of the microphone specifications on the overall noise performance.Tascam DR-05X Stereo Handheld Digital Recorder and USB Audio Interface, DR-05X (DR-05X) The last two seconds of each file represent the inherent noise floor of the recorder (the microphone input was terminated by a 150 ohms resistor). The columns “original” contain the original and unmodified 16 bit. So, for evaluating the absolute equivalent noise levels of the various microphones, their sensitivities must be taken into account (50mV/Pa : 40mV/Pa : 25mV/Pa = 0dB : -2dB : -6 dB). Note that this kind of normalization does not compensate for the different microphone sensitivities. In order to compensate for the different input sensitivities of the various recorders, the normalization was done in such a way that all files exhibit a virtual input clipping level of -60 dBu (the original files were digitally amplified according to the previously measured input clipping levels listed above). The columns labelled “normalized” contain the normalized sound files. The test arrangement was fixed throughout the entire test procedure (the distance between the clock and the microphones was 1 meter). All recorders were set to their maximum gain. In order to evaluate the noise performance of the various recorders in combination with different microphones, the sound of an electronic alarm clock has been recorded subsequently with three different microphones and various recorders.
AUDIO RECORDER 2 MICROPHONES PRO
The calculation and filtering procedures were executed by using the Avisoft-SASLab Pro sound analysis software. The Zoom H2 measurements were done by Richard Mudhar.
The Zoom H4n measurements were done by John Lundsten. The Roland R-05 measurements were done by Per Baekgaard. The SONY Hi-MD MZ-RH1 Measurements were done by John Beale. The dynamic range figure at the maximum available gain setting alone should not be interpreted as an indicator for the performance of a recorder because these numbers will of course depend on the individual maximum gain of the various recorders (a higher maximum gain tend to result in a lower dynamic range figure). Note that the dB gain figures that are often specified by the manufacturers do not represent a meaningful characterization of the relevant input sensitivities that would be needed in practice. The input (clipping) level at the maximum available gain setting represents the maximum input sensitivity (or "gain") of the recorder. The errors of the measurements should be less than +-2dB When available, the figures in brackets indicate the manufacturer's specifications. Increasing the sample rate would also not improve the results because the decimation filters in the delta-sigma A/D converters already average the oversampled signals. Note that a bit-depth of 24 bit would not improve the noise level figures at these high gain settings. PIP, limiter and noise cancelation options were disabled. All parameters were measured at the maximum available gain setting (at which the lowest possible noise floor can be obtained), except where indicated otherwise. Recording format: 44.1 KHz, 16 bit (unless indicated otherwise), mono (left channel).
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