- The Dither module applies iZotope's MBIT+ dithering and noise shaping technology to maintain the highest audio quality possible when you are converting to 24, 20, 16, 12, or 8 bits. MBIT+ uses psychoacoustic methods to distribute dithering noise into less audible ranges. The result is a more pleasing sound and smoother fades.
- Recording Classical Music, 252, 245, 783. Recording Classical Music presents the fundamental principles of digitally recording and editing acoustic music in ambie.
- Use the links below to jump into the RX 7 Help Documentation: Introduction RX Overview Working with Files Recording Transport Controls Spectrogram/Waveform Display Interactive Tools Undo Histor.
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The Dither module applies iZotope's MBIT+ dithering technology to improve the quality of your audio files when you are converting to 24, 20, 16, 12, or 8 bits.
How To Use Izotope Rx7
Izotope Rx7 Demo
New bit depth - This sets the target resolution (bit depth) of the audio file.
Noise shaping - By shaping the dither noise, it is possible to provide more effective and transparent dithering by shaping the dithered noise spectrum. You can control the aggressiveness of this shaping, ranging from None (no shaping) through Ultra (roughly 14 dB of audible noise suppression)
Dither Amount - The dithering amount can be varied from None (noise shaping only) to High. No dithering or Low dither amount can leave some non-linear quantization distortion or dither noise modulation, while higher settings completely eliminate the non-linear distortion at the expense of a slightly increased noise floor. In general, the Normal dither amount is a good choice.
Auto-blanking - This option instructs RX to completely mute dither output (i.e. dither noise) when the input signal is completely silent (0 bits of audio).
Limiting of noise peaks - Dither noise is random in nature and has a very low amplitude. However, after noise shaping, especially in aggressive dithering modes, the high-frequency dither noise is significantly amplified, and the overall dither signal can show spurious peaks up to -60 dBfs. If such high peaks are undesirable, you can enable this option to effectively suppress the spurious peaks in the noise-shaped dither.
Harmonics suppression - If, for some reason, any dithering noise is undesirable, simple truncation remains the only choice. Truncation results in harmonic quantization distortion that adds overtones to the signal and distorts the timbre. In this case you can enable Suppress Harmonics option to slightly alter the truncation rules, moving the harmonic quantization distortion away from overtones of audible frequencies. This option doesn't create any random dithering noise floor. Instead it works more like truncation, but with better tonal quality in the resulting signal. This option is applicable only in the modes without dithering noise and without aggressive noise shaping.
Overview
The Azimuth module provides control over left and right channel gain and delay. Azimuth adjustment can help repair stereo imbalances and phase issues that can occur as a result of issues introduced by speed inconsistencies.
Controls
- LEVEL (dB): Adjusts the gain of the left and right audio channels
- ADAPTIVE MATCHING: Enables automatic gain adjustment of the right channel in order to match the level of the left channel over time.
- DELAY (samples/ms): Allows for manual adjustment over the delay in samples or milliseconds of the left and right audio channels. For very accurate azimuth correction, RX uses oversampling to achieve sub-sample delays.
- ADAPTIVE AZIMUTH ALIGNMENT: Enables automatic time-variable adjustment of the right channel’s sample delay in order to align the waveform with the left channel.
- SUGGEST: Analyzes the selection and determines the appropriate amounts of fixed gain and delay to apply in order to align the two channels.
Suggest & Adaptive modes are only available on stereo files
The Suggest function and Adaptive Matching modes are meant to function on stereo files, these controls will be disabled in the Azimuth module interface when a mono file is selected.
More Information
Use Azimuth to fix gain and delay alignment issues
Azimuth adjustment can be useful to repair inconsistent gain or delay alignment between left and right channels.
For example, gain and delay alignment inconsistencies can be introduced by improper tape head alignment.
Use Azimuth before processing with Center Extract
Rx8 Tutorial
Azimuth adjustment is recommended to be applied before Center Extract processing to achieve the best results.