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Standard "skin" elements can be individually augmented or replaced with different dials and buttons, as well as visualizers such as waveform, oscilloscope, spectrum, spectrogram (waterfall), peak and smoothed VU meters, which all of them are analysis-oriented, at least for built-in visualizations. foobar2000 offers third-party user interface ...
An analog VU meter with peak LED. A volume unit (VU) meter or standard volume indicator (SVI) is a device displaying a representation of the signal level in audio equipment.. The original design was proposed in the 1940 IRE paper, A New Standard Volume Indicator and Reference Level, written by experts from CBS, NBC, and Bell Telephone Laboratories. [1]
Real-time graphic visuals, such as bar, waveform, spectrogram, spectrum, and VU meter. Basic and advanced effects and filters such as noise reduction, compressor/expander, volume shaping, volume matcher, pitch, reverb, resampling, and parametric EQ. Effect previewing; Saving and restoring effect presets; DirectX Audio plug-in support
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A spectrum analyzer circa 1970. The first spectrum analyzers, in the 1960s, were swept-tuned instruments. [1]Following the discovery of the fast Fourier transform (FFT) in 1965, the first FFT-based analyzers were introduced in 1967.
Loudness monitoring of programme levels is needed in radio and television broadcasting, as well as in audio post production.Traditional methods of measuring signal levels, such as the peak programme meter and VU meter, do not give the subjectively valid measure of loudness that many would argue is needed to optimise the listening experience when changing channels or swapping disks.
Broadcast engineers in North America usually line up their audio gear to nominal reference level of 0 dB on a VU meter aligned to +4 dBu or -20 dBFS, in Europe equating to roughly +4 dBm or -18 dBFS. Peak signal levels must not exceed the nominal level by more than +10 dB. [10]
This can be useful in many applications, but the human ear works much more like an average meter than a peak meter. The analog VU meters are actually closer to the human ear's perception of sound level because the response time was intentionally slow - around 300 milliseconds, [2] and thus, many audio engineers and sound professionals prefer to ...