Pocket DVD Studio 4.0 Online Manual

Audio Settings:

Audio bitrate (in bits per second)

Audio bitrate refers to how many data storage is allocated to store audio signals. The higher audio bitrate, the better audio quality. There are some other factors that influence the audio quality as well, such as audio sampling frequency.


Sampling frequency:

Using 44KHz sampling can reduce audio distortion on high frequency level, however it consumes more audio bitrate.

The average human ear can hear sounds in the frequency range 20-20000Hz. To reproduce a sound at a given frequency the audio sampling rate must be more than twice that frequency. This means that with a sampling frequency of 22000Hz (22 KHz) some high frequency information will be lost. The higher sampling frequency (44100Hz) have cut-offs above normal human hearing range.


Audio Volume

You can change output audio volume in "Output Settings" dialog. The default volume level is 5 (original volume).


Stereo to Mono

When the output audio is set to Mono, you can choose which stereo channel (of input source) to be copied into the Mono channel (output). It is useful for some video sources (e.g. VCD) which use the left, right channels for different languages or for karaoke.