Adobe AUDITION 1.5 - Manual (Page 114)

CHAPTER 4 106
Editing Audio
Inverting and reversing audio
The Invert effect simply inverts the waveform’s samples, making all positive offsets
negative and all negative offsets positive. Inverting is useful for lining up amplitude curves
when creating loops or pasting. By inverting one channel of a stereo recording, you can
also correct out-of-phase channels or create interesting phasing effects. For more infor-
mation on phase, see the Glossary.
The Reverse effect reverses the order of a waveform’s samples so that they play backwards.
Reversing is useful for creating special effects.
To invert a waveform:
1 If you want to invert part of a waveform, select the desired range. Otherwise, deselect
all audio data to invert the entire waveform.
2 Choose Effects > Invert.
To reverse a waveform:
1 If you want to reverse part of the waveform, select the desired range. Otherwise, deselect
all audio data to reverse the entire waveform.
2 Choose Effects > Reverse.
Generating audio
Adobe Audition provides several commands that let you generate new audio data. These
commands are different from effects in that they insert new sounds into a waveform rather
than alter existing sounds.
Generating DTMF signals
Dual Tone Multi-Frequency (DTMF) signals (also know as touch tones) are used for
dialing telephone numbers over phone lines that are capable of responding to touch tone
signals. These signals are recommended internationally by the International Telegraph
and Telephone Consultative Committee as the signals for push button telephones.
Keep in mind that the DTMF signals generated by telephone push button keypads are
different from the Multi-Frequency (MF) tones generated by the telephone network to
transmit information. You can use the DTMF Signals command to generate MF tones as well.
ug.book Page 106 Tuesday, March 16, 2004 1:29 PM