1) Sound Forge Audio Sound Quick Start Manual =========================
http://dspcdn.sonycreativesoftware.com/manuals/audiostudio100_qsg_enu.pdf
- 기본적인 화면 구성 : (스테레오의 경우) upper = left sound, lower = right sound
- 범위 선택시 상/하 구분선에 마우스를 위치시키고 드래그 해야
left sound, right sound 가 모두 선택됨(예를 들면 볼륨 조정 효과가 좌/우 모두 적용됨)
2) 사운드포지 5.0 Nate 판 동영상 강의 링크 ==========================
: http://pann.nate.com/search/video?searchType=A&q=%EC%82%AC%EC%9A%B4%EB%93%9C%ED%8F%AC%EC%A7%80
- 오디오 파일 볼륨 조절하기
: 범위 지정 후 → process- volume → 수직막대 조정(몇 % 증폭,방향 화살표로 미세이동)
→ OK
- 일반적인 잡음 제거하기 링크
http://pann.nate.com/video/215566674
* 오른쪽 아래 " +" 를 적당히 클릭해서 음파 나오는 부분을 확대시킴
→ 잡음만 있는 부분의 소리세기(dB)를 파악하기 위해 잡음만 있는 부분 범위 지정
→ tools - statistics 클릭하면 화면에 Minimum sample value 와 Maximum sample value 수치를
메모해 놓음(OK 클릭후 빠져나옴)
→ Effects - Noise gates 클릭 후 세로막대를 Minimum sample value 값으로 조정
→ attack time(시작 시점) , release time (종료 시점)을 지정후 OK 클릭
* ms (밀리세컨드 = 1/1000 초 , 즉 5,000 ms = 1 초) 단위라서 파일 전체 잡음을
제거 하려면 ?)
- 녹음된 파일 앞/뒤 무음 부분 제거
3) Sound Forge 8.0 Manual ========================================
178----------PROCESSING AUDIO CHP. 10
Normalize
The Normalize command maximizes the overall volume of a file without introducing clipping. When you
normalize a file, the entire file is scanned and a constant gain is applied to raise the file’s level to a specified
value.
Normalizing Audio
1. Open the Musicbed.pca file.
2. From the Process menu, choose Normalize. The Normalize dialog is displayed.
3. From the Preset drop-down list, choose Normalize to -16 dB (musics) and click OK. The file is normalized and
its overall “loudness” increased.
Normalize Controls
This feature is available only in the full version of Sound Forge software.
The following controls are located in the Normalize dialog.
Normalize using Peak level
This radio button normalizes the audio file using the maximum (instantaneous) sample values detected. A
constant gain is then applied to the audio.
Specify Normalize
to -16 dB from the Preset
drop-down list
Normalized file
CHP. 10 PROCESSING AUDIO
179
Normalize using Average RMS level (loudness)
This radio button normalizes the audio file using the detected average RMS value of the audio file. This is
helpful for matching the apparent loudness of a number of individual recordings. For more information, see
Scan settings area on page 179.
Normalize to
This fader specifies the level to which the highest peak should be set.
• With Peak level, if the peak level is -10 dB and the Normalize to value is -3 dB, a constant boost of 7 dB is
applied to the entire file.
• With Average RMS level, normalizing to 0 dB means boosting the signal until it has the same apparent
loudness as a 0 dB square wave. This results in all the dynamic range of the signal being flattened and all
peaks being either clipped or seriously compressed. For more information, see If clipping occurs on page 181.
Note: As a rule, normalizing using Peak levels to 0 dB is
acceptable, but normalizing using Average RMS level to
anything above -6 dB is not recommended.
Scan settings area
The controls in this area allow you to determine the response of the RMS level scan to the dynamics in the
file.
Control Description
Ignore below Determines the level of audio data included in the RMS calculation. Data below the threshold is
ignored, effectively eliminating silent sections from RMS calculation. The Ignore below fader
should be set a few dB above perceived silence. If Ignore below is set to -Inf., all audio data is
used. However, if the value is set too high (above -10 dB) the RMS value may never rise above
the threshold. In this case, normalization cannot occur. For this reason, you should evaluate the
threshold by clicking the Scan Levels button. For more information, see Scan Levels on page
180.
Attack time Determines how quickly the scan responds to transient peaks.
Release time Determines how quickly the scan should stop using transient peak material after it begins to
drop in level. Slower release times result in more data being included in RMS calculation.
Use equal loudness contour Allows the scan to compensate for the Fletcher-Munson Equal Loudness Contours. The
Fletcher-Munson Equal Loudness Contours illustrate that very low- and high-frequency
audio is less perceptible to the human ear than mid-range audio. Therefore, selecting
this option forces the scan to factor this into RMS calculation.
180
PROCESSING AUDIO CHP. 10
Scan Levels
Clicking Scan Levels initiates Peak and RMS scans on the audio and displays the RMS level and the highest
peak level detected. When previewing a normalize effect, the entire file must be scanned to preview a even
small selection. Clicking Scan Levels saves the current Peak and RMS values and allows you to preview
different Normalize to settings without re-scanning the entire file.
An asterisk adjacent to a level value indicates that the value is not current. This occurs when the selection is
updated or the dialog is initially opened. To update values, click Scan Levels.
If values have never been calculated, two dashes display. Click Scan Levels to calculate values.
Note: If the RMS level never reaches the Ignore below
threshold, a value of -96 dB displays. If this occurs, decrease
the Ignore below threshold level and rescan.
Use current scan level (do not scan selection)
This feature is available only in the full version of Sound Forge software.
When you select the Use current scan level check box, the current scan levels are used without initiating a
new scan. This is useful when applying scan levels from a different selection or file to the current selection,
thereby allowing identical gains to be applied to multiple files. This option can also be used to scan a
selection of an audio file containing the loudest or most constant levels and then apply that scan to
normalize the entire file.
Current Peak and RMS levels
Noncurrent Peak and RMS levels
Nonexistent Peak and RMS levels
CHP. 10 PROCESSING AUDIO
181
If clipping occurs
The If clipping occurs drop-down list is used to specify how the normalize function handles clipping that may
occur when an audio file is processed using the RMS option. This list provides four options.
Note: When normalizing stereo audio, normalization is
computed on the loudest sample value found in either channel
and identical gain is applied to both channels. If a single
channel is selected in a stereo file, normalization processes
only that channel.
Option Description
Apply dynamic
compression
Audio peaks that will result in clipping are limited below 0 dB using non-zero attack and
release times to minimize distortion. This mode is useful for getting loud and clear audio
during mastering.
Normalize peak value to
0 dB
The selection’s peak amplitude level is normalized to 0 dB, thereby allowing the
maximum possible constant gain without clipping the selection. However, less gain is
applied than would be necessary to achieve the Normalize to RMS level.
Ignore (saturate) Audio is permitted to clip and distort.
Stop processing Audio peaks that will result in clipping force the normalize function to cease processing
and alert you that clipping will occur at the current level.
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