Apple Soundtrack Bedienungsanleitung PDF herunterladen (Seite 129)

Chapter 8

Working with Audio Effects

129

Frequency Ranges Used with EQ

All musical sounds can be categorized into one of three basic frequency ranges: bass,

midrange, or high (also called treble). These can be further divided to include low bass,

low and high midrange, and low and high highs. The following table describes some of

the sounds affected by each range:

Note:

The frequencies shown for each range are approximate. Any division of sound

into frequency ranges is somewhat arbitrary, and is meant only to give a general

indication of each range.

Name Frequency range Description

High High 8–20 kHz Includes cymbal sounds and highest harmonics

of instruments. Boosting frequencies in this range

slightly can add sparkle and presence.

High 5–8 kHz This range corresponds roughly to the treble tone

control on a stereo. Boosting frequencies in this

range can add brightness and shine.

Low High 2.5–5 kHz Includes the higher harmonics of voices and

musical instruments. This range is important for

adding presence. Excessive boosting in this range

can sound shrill or harsh.

High Midrange 1.2–2.5 kHz Includes the consonants of voices and the high

harmonics of musical instruments, especially

brass instruments. Excessive boosting in this

range can create a pinched, nasal sound.

Midrange 750 Hz–1.2 kHz Includes the vowels of voices and the harmonics

of musical instruments that create tone color.

Low Midrange 250–750 Hz Includes the fundamentals and lower harmonics

of voices and musical instruments; careful EQing

of each can keep them from competing. Excessive

boosting in this range can result in muddy and

unclear audio; excessive cutting can produce

thin-sounding audio.

Bass 50–250 Hz Corresponds roughly to the bass tone control on

a stereo. Includes the fundamental frequencies of

voices and of musical instruments. Excessive

boosting in this range can sound boomy and thick.

Low Bass 50 Hz and below Also called

sub bass

. Very little of the sound of

voices or musical instruments falls in this range.

Many sound effects used in movies, such as

explosions and earthquakes, fall in this range.

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