User manual RME ADI96PRO

[. . . ] User's Guide ® CDS ® Constant Double Speed Analog Processing Digital Processing Hi-Precision 24 Bit / 96 kHz Stereo DSP based Analog / Digital-Converter Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Supplied Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Brief Description and Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] A ratio of 1, 2:1 equals nearly no change, because a change in input level of 10 dB leads to a 12 dB change in output level (only 2 dB difference). Typical Ratio values are 2 to 3 at a Release of 2 s. That way, music can be faded in and out without heavy side effects. Noise between tracks can be reduced easily. The Threshold of the Expander has a strong relationship with the audio material and the noise in it. LPs often require a Threshold of -30 dB (plus Attack Slow, see chapter 9. 8), while recordings from hi-quality sources often only need values around -75 dB. At values of -100 dB the dynamic range of the ADI-96 PRO can be increased. With more extreme settings like Ratio 5:1 and Release 0, 1 s the Expander operates like a Noisegate. With these settings it is possible for example to isolate percussive instruments from environmental noise. The settings Ratio 1, 5:1 and a Release of around 0, 5 s allows to de-compress signals which were too strong compressed before. This will result in a more natural, open sound, but the original can't be recovered completely. User's Guide ADI-96 PRO © RME 17 9. 5 De-esser Function Selective dynamic level limiter with automated relative level control. Removes disturbing sibilants on speech and vocal recordings, or other level peaks present in its operating range. Application In general there are several methods used to reduce sibilants: Fixed bandpass - an Equalizer with fixed cut in the sibilant frequency area. Dynamic lowpass - cuts all high frequencies according to the level found in the sibilant area. Requires a threshold setting adopted to the actual signal. Dynamic bandpass - Requires a threshold setting adopted to the actual signal. The method used in the ADI-96 PRO is a dynamic bandpass with all its advantages, but does no longer need a threshold to be set according to the actual signal. Using an automated relative function the overall level is compared to the level in the sibilant area, the threshold is automatically set to always achieve the same sound. The level of the actual signal doesn't matter anymore. Settings Place the cursor in the Overview window on DES and press Enter. Menu Options Adjustable are: · Key Listen. Helps to find the best filter setting for an ideal signal reduction within the desired frequency area · Frequency 0, 7 kHz up to 20 kHz. [. . . ] At a release time of 20 seconds, Riste Time 200 ms and active Point mode a display of the overall frequency response is shown. The external Equalizer is now used to correct this curve to a straight line. Special Applications At the highest display range (50 dB) and lowest Top Level setting (-70 dB) the Analyser displays all signals down to -120 dBFS. This allows to examine the hum and noise present in the studio's environment. [. . . ]