Pure Neumann sound in the digital domain, for use with AES/EBU, AES 42 or S/PDIF. The signal is converted directly at the capsule.
Its 15 different remotely controlled directional characteristics and numerous additional features permit the D-01 to be optimally adapted to almost any recording situation. These comprehensive features demonstrate what can be achieved with digital microphone technology. The D-01 has a newly developed capsule, and is valued by users particularly for its hitherto unknown transparency and fidelity to detail.
- Extremely wide dynamic range: more than 130 dB
- Neumann A/D conversion process
- Pre-amps and external A/D converter are no longer necessary
- Wide range of new functions through integrated digital signal processing
- Control and monitoring of all microphone parameters and functions through Remote Control Software
- A/D Converter, optimized for direct conversion of the capsule signal
- New capsule design
- Additional DSP functions
- Limiter (incl. de-esser)
- All parameters and functions remote controllable
Digital Microphone Interfaces
- AES 42-2001 to AES/EBU conversion
- Reliable synchronization through new PLL process
- 2 or 8 channels
- Phantom powering
- Word clock in and out
- Integrated word clock generator
Remote Control Software
- Control and monitoring of all parameters
- DSP function control
- Peak level meter
- Gain reduction bargraph for limiter
- Save, copy, and recall for complete setups
ApplicationsUniversally applicable, and particularly suitable for applications where maximum resolution and transparency are desired.
Remote Control of Standard Microphone Parameters
The DMI digital microphone interfaces permits familiar microphone settings such as the directional characteristic, pre-attenuation and low-cut fi lter to be controlled remotely and saved. Changing the settings of microphone parameters is greatly simplifi ed, which makes it possible for settings to be tested rapidly from the monitoring position, in order to optimize the sound quality. All of the settings can be saved together with any desired additional information, thus eliminating the necessity of keeping a hand-written log of the recording procedure.
Despite continuing improvements, integrated circuits available on the market still constitute a limiting factor in the conversion of audio data from analog to digital form. The best currently available delta-sigma A/D converters typically achieve a dynamic range of 115 dB to 120 dB, A-weighted, with a word length of 24 bits.
In comparison, a high-quality analog condenser microphone has a dynamic range of up to 130 dB. A/D conversion with a considerably better performance is therefore required, in order to prevent the addition of noise to the signal. At the same time, this process must be optimally adapted to the signal levels and source impedance found in the microphone.
If the A/D conversion is carried out only after the signal reaches the mixing console or other equipment, this is usually associated with loss of signal quality, since the conversion takes place only after the gain levels have been set. Headroom aspects and noise contributed by the microphone preamplifi er and A/D converter thus aff ect the dynamic range.
Consequently, the development goal was to achieve high-quality digitization of the capsule signal directly in the microphone, so that level matching and other processing steps could be carried out in the digital realm. This is the only way of maintaining the full quality of the microphone signal.
The RCS Remote Control Software
All parameters are displayed on the screen, and can be changed at any time. During production, the audio engineer can monitor the operating status and parameters of all of the connected microphones and, if necessary, can change the settings quickly and easily.
The parameters displayed include the directional characteristic, pre-attenuation, low-cut fi lter, gain, various microphone status indicators, command indicators, and mute and phase reverse functions. Signal levels and the operation of the compressor or limiter can also be monitored on the screen.
Information transmitted by the microphone, such as the name of the manufacturer, model and serial number, is also displayed for clear identifi cation of the connected microphones. Moreover, it is possible to input additional information such as the name of the sound source. Settings for the complete microphone setup can of course be stored and retrieved as required.
Acoustic transducer: K 07 large double-diaphragm capsule, diameter 30 mm with protected internal electrodes Directional characteristic: 15 remote controllable polar patterns, from omni to cardioid to figure-8.
Frequency response: 20 Hz to 20 kHz
Free-field sensitivity: –44 dBFS
Equivalent noise level, CCIR: 19 dB
Equivalent noise level, A-weighted: 8 dB-A
Signal-to-noise ratio, CCIR: 75 dB
Signal-to-noise ratio, A-weighted: 86 dB
Maximum SPL at 0 dBFS: 138 dBSPL
Dynamic range, A-weighted: 130 dB
- 44,1/48 kHz: 52 samples
- 88,2/96 kHz: 61 samples
- 176,4/192 kHz: 121 samples (AES 3)
Supply voltage range: +6 V to +10.5 V
Current consumption: max. 220 mA
Weight: approx. 700 g
Diameter: 63.5 mm
Length: 185 mm