ESOTERIC SOUND Re-Equalizer Manual de usuario descargar pdf (Pagina 3)

HF FILTER

It is usually best to start a listening session or a restoration project with this filter set to its highest

setting: 24 kHz. Listen to the speech or music and lower the filter setting until you begin to hear a

loss of high frequencies (treble notes), then increase the filter setting by one switch position. If you

are doing a restoration, your computer recording software probably has a built-in spectrum analyzer

[1]. You can use it to verify your filter setting choice by turning on the analyzer. Reset the filter to

24 kHz and then turn it to lower steps as you watch the analysis display. Stop when you start to see

a loss of high frequencies. Used properly, the HF Filter can remove much of the high frequency

noise inherent to cylinders and 78 RPM recordings. It would not be uncommon to find a setting of

8 to 12 kHz suitable for early 78s.

VOLUME CONTROL

Set the Volume control as needed. If you are recording to a computer through a sound card, watch

the record level display and set the Volume for maximum peaks in the -3 to -1 dB range. It is

preferable to record in this range as it maximizes the signal-to-noise ratio.

NOTES:

1. Software such as Cool Edit Pro, Adobe Audition, Diamond Cut 6 or 7, Wavelab and others have

spectrum analyzers. Consult your program documentation to find out how to start the analyzer.

In the rare instance your software doesn’t have an analyzer, there are stand-alone programs such as

Spectrogram which can be downloaded from: www.visualizationsoftware.com/gram.html

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ESOTERIC SOUND Re-Equalizer Manual de usuario Pagina 3