iii. virtual tape machines - Slate Digital

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Slate Digital – Virtual Tape Machines In this scenario, I want to take advantage of the Virtual Tape Machines harmonics, smoothing, and distortion to warm it up, and to even attenuate/boost them with the EQ. I want to take also advantage of the compression aspect of the VTM to feed the VCC, where I can add some final subtle flavor. I'd try several bias settings depending on the high frequency reduction behavior I want (which are all far different from a simple EQ). So for instance, I'd use the 2" with FG456, 30ips High Bias, and play with the IN/OUT linked levels to have the highs I want. For a piano track, I would use a different configuration: VCC EQ VTM For the piano, I'd use the VCC Mixbuss to get some cool stereo and harmonic effects, then EQ, then VTM with not too much noise and just a little bit of flutter. Here, I just would like to add to the sound. A little bit of smoothness for high amplitudes, but I don't want to use the VTM as the same high frequency reduction tool than for the vocals. I just want to warm up the sound a little and make it less sterile. Here I'd use the 1/2" FG9 15 ips with Normal Bias. 14
Slate Digital – Virtual Tape Machines VII. ADVANCED SETTINGS CALIBRATION LEVELS The VTM Calibration Settings are useful to quickly set up the processing of the tape, to get it hotter (more saturation, better signal-‐to-‐noise ratio), or quieter (less saturation, more noise). In order to be properly calibrated, the VU meters need to display 0dB with a 1kHz sine wave is played at -‐18dBFS, with an -‐18dB Calibration Level. 15 To get the signal hotter, you have to decrease the calibration level. If you process a -‐18dBFS peak sine wave, and change the calibration level to -‐24dB, the VU meter will show +6 dB VU, thus the tape processing will be hotter, i.e. with more saturation. Increasing the calibration will yield less saturation, with a higher noise floor. The VU meter level is “linked” to the saturation level of the tape, so whatever the calibration, the same VU meter display should give the same amount of saturation. DEFAULT CALIBRATION We wanted the needle to not be too hot by default, because we wanted the user to use the Virtual Tape Machines at the right calibration, preferably with the needle around 0dB VU. I also wanted the VU Calibration and the Model Calibration to be coherent with what I measured with the real tape, knowing that there is no "right" calibration with real tape, for several reasons: • Calibration, i.e. relation between Input/ Output/ Saturation levels, depends on the technician who set up the machine, on the tape, etc. • The same tape formula could be calibrated in several ways, i.e. the GP9 has more headroom, but some engineers chose to have the same headroom with a lower noise floor, which, at the end, is the same thing on the tape itself, but regarding the input/output, is not the same. • Calibration also depends on the machine maintenance, model, etc. What I did for the algorithm was achieve coherence between all Tape Type/Machine Type/ Tape Speed variations. For instance, the FG9 has more headroom and less noise than FG456; the ½" Machine has more headroom than 2" machine, etc.
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iii. virtual tape machines - Slate Digital

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