These settings effect the quality of the audio recordings made within LecShare Pro. These settings do not effect the quality of imported audio.
This is the amount of compression LecShare Pro will use when making recordings. Raw audio files with no compression are very large, so some compression helps keep file sizes more manageable. This compression is done in real-time.
IMA 4:1 is the recommenced compression setting.
Choosing "None" for compression will result in much larger audio recording files. Any of the compression settings will work, and many of them will create smaller files than IMA 4:1, but IMA 4:1 is a good balance between quality and file size. When a presentation is exported the audio file will be greatly reduced in size because the export is done in the MPEG-4 format.
This determines how many audio samples LecShare Pro will make every second and how large the sample will be. The higher the sampling rate and size, the higher the quality of the recording and the larger the file becomes.
22.050 kHz, 16 bit, mono is the recommenced sampling setting.
Most computer microphones cannot record in stereo, so the setting of mono is preferred.
This selects which input source to use for the audio recordings.
It is highly recommended to leave this setting at "Off while recording" or "Off". If it is set to "On" there is a chance the recording will have an echo effect.
This is the level of the speaker during recording. It is recommended to must the speaker during playback.
This adjusts how "sensitive" the input device is - the higher the gain, the more sensative the microphone. Adjusting the gain too high will result in distortions in the audio.
At first, try leaving the gain where it is set by default. Then make some sample recordings and see how they sound. After listening to the recordings make the appropriate adjustments to the gain level.
Some systems do not allow you to change the level of the gain.
This indicates the level of the audio coming in from the input source.
Recording levels will vary from system to system. Just because the recording level lights do not reach a certain level or seem to reach too high does not mean that the recording will turn out poorly. The best way to check what the recording level lights mean on a particular system is to record a small sample, note the light levels, and then listen to the audio that it produces by using the built-in audio player.