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APTECH-ARENA an International Education Provider which helps you to get Bachelor in Multimedia and also Bachelor in Software Engineering with its credit transfer facility to UK, USA, Canada & Australia in its ability to provide you with its best training is extending its tutorial classes with Menu Magazine. In this session we would like to teach you the tips and tricks in Sound Forge – Professional Audio Editing Software and so you would prefer learning how to make it. You can contact us in Mahatun Plaza for any Professional and Career Multimedia Training and Tel. No. is 02-651-5901.
Happy Reading & Editing….
Let’s start the session with the properties of the sound. To work effectively with digital audio, it is important to understand some basic terminology of digital audio since you will come across these terms as you edit your files. The three basic properties of digital audio are: stereo, bit-depth and sample rate.
A stereo audio signal has two discreet channels of audio whereas a mono signal has only one. A stereo signal can be mixed down to a mono signal. An uncompressed stereo digital audio file will be twice the size of a mono file.
Sample rate is the number of samples of a sound that are taken per second to represent the event digitally. The more samples taken per second, the more accurate the digital representation of the sound can be. For example, the current sample rate for CD-quality audio is 44,100 samples per second. Fig1.1 shows the example of sample rate.
(Fig 1.1)
Bit depth describes the potential accuracy of a digital audio file. Higher bit depth audio will sound better than smaller bit-depth audio. 8 and 16-bit audio are currently the most common sample sizes. 8-bit audio takes up less hard drive space but is inherently noisier than 16 or 24 bit-depth audio. CD quality is 16-bit.Fig 1.2 shows the illustration of bit depth in the audio.
(Fig 1.2)
Now let’s see the basic functions of the sound Forge. When you first open a file, Sound Forge scans the entire file and creates a peak file. The peak file is stored with the same name and in the same location as the audio file.
(Fig 1.3)
Now we can play specific portions of audio data by creating selections in the waveform display. Drag the mouse within the data window. Notice that the waveform is selected as the mouse is dragged. Click the Play button only the selection plays.
(Fig 1.4)
Let’s talk about mixing sound. Mixing is a powerful editing function that allows two sounds to be combined into a single waveform.
Open and play the Drumhit.pca file, located in the c:\Program Files\Sony\SoundForge 7\ folder. The file contains a snare drum and crash cymbal sound.
Verify that Drumhit.pca window is active and choose Edit | Select All. The entire waveform is selected. Choose Edit | Copy.
Activate the Voiceover.pca data window and click theGo To Start button on the playbar. The cursor moves to the start of the file.
Choose Edit | Paste Special, and choose Mix from the submenu. The Mix dialog appears.
Verify that the Source and Destination volume faders are set to 0 dB and click OK. The drum hit is mixed equally with the spoken passage.
(Fig 1.5)
Now Lets see how to record a sound in the sound Forge. You can record into an existing window or create a new window at the time of recording.
Choose Special | Transport | Record. The Record dialog appears. You can also open the Record dialog by clicking the Record button on the transport bar or pressing Control-R.
You are now ready to record into the active data window at the current cursor position. If this is not where you want to record, use any of the following methods to prepare for recording:
To record into a different data window, click the Window button and choose a data window from the Record destination window drop-down list. Click OK to return to the Record dialog.
Click OK to return to the Record dialog. Click the Record button in the Record dialog. Recording begins.
Click the Stop button to stop recording. Click the Close button to close the Record dialog.
(Fig 1.6)
(Fig 1.7)
Now the next step is extract audio from CDs Sound Forge allows you to extract 44,100 Hz, 16-bit, stereo data from CD.
Insert a CD in the CD-ROM drive.
Choose File | Extract Audio from CD.
Select the desired drive from the Drive drop-down list.
After you select the drive, the Extract Audio from CD dialog appears and lists all tracks
Specify the audio to be extracted using any of the following methods:
Select the Read by tracks radio button and select all the desired tracks.
Select the Read entire CD radio button to extract all the tracks.
Select the Read by range radio button and enter appropriate values in the Start and End(or Length) boxes.
Select extraction options as needed:
Select the Create regions for each track check box to add each extracted track to the file’s RegionsList.
Select the Create markers for each index change check box to place markers in the extracted file at all points where indices occur in the original track.
Click OK. Sound Forge begins extracting data from the CD and displays a progress meter
(Fig 1.8)
Let’s see about Markers. Markers and regions allow you to tag and organize audio data and make audio editing more efficient. A Marker is a tag placed in an audio file that is used as a reference point. Markers make navigating a file easier and more efficient.The Steps to insert markes are
Click to position the cursor in the waveform.
Right-click the ruler and choose Insert Marker / Region from the shortcut menu. The Insert Marker / Region dialog appears.
Enter a name for the marker in the Name box and click OK. The new name appears in the waveform
(Fig 1.9)
You can change a marker’s position by dragging it to a new location or by updating its position to the current cursor location. You can also enter precise values to move a marker to a specific location. Position the cursor where you want the marker to be. Right-click the marker and choose Update from the shortcut menu. The marker moves to the cursor position.
Let’s meet in the next issue with some other Tips and Tricks using various multimedia tools.
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