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Changing the sample rate
The sample rate is the number of samples per second, measured in hertz (Hz), used to record audio. When creating a new file in the full version of Sound Forge, you can specify sample rates from 2,000 Hz to 192,000 Hz. When creating a new file in Screenblast Sound Forge, you can specify sample rates from 2,000 Hz to 48,000 Hz. Typical sample rates are stored as presets in the Sample rate
1.Open and play the Voiceover.pca file.
Note: This file is located in the same folder as the application.
2.
3.Play the file. Notice that the pitch is higher and the duration is slightly shorter.
4.
5.Play the file. Notice that the pitch is lower and the duration is longer.
Changing the sample rate of a file also changes the pitch and duration. To change the sample rate of a file while preserving its duration and pitch, use the Resample command. For more information, see Resample on page 163.
Changing the bit depth
Bit depth refers to the number of bits used to represent a sound. Sound Forge can increase or decrease a file’s bit depth.
Increasing bit depth
Increasing the bit depth does not improve the quality of a file, but it allows subsequent processing to be performed with increased precision.
Note: The maximum
Screenblast Sound Forge is 16 bit.
1.Open a file with a small bit depth.
2.From the Process menu, choose
3.From the Bit depth
Note: When increasing a file’s bit depth, the Dither and Noise shaping controls should be set to None and Off, respectively.
CHANGING FILE ATTRIBUTES AND FORMATS | CHP. 6 |