Custom Search

Fountain Products
 Cave Surveying
Cave Survey Software
 Free Utilities, Tools
Web Image Tracker
Sports Audio Delay
Time Calibrator
Spectrum Analyzer
Used Car Evaluater
Terrain Modeling
Free Topo Maps
XEdit Text Editor
EXPL Language
 Fun Stuff
     Eight-X Solitaire
 Math, Computers
  3D Mandelbrots
  6502 Memorabilia

If you like our Programs Please Leave A TIP

Configure Audio Delay

Top  Previous 

1. Data Format. Begin choosing a data format.

a. Sample Rate. Sample Rate controls the frequency response of the audio delay. The higher the sample rate, the higher the frequency of the audio dleay Generally you will have choice of at least 3 sample rates:

11.025 kHz - AM Radio Quality

22.05 kHz - FM Radio Quality

44.1 kHz - CD Quality

If you are connected to an AM radio, you should the 11.025 kHz setting. Using a higher setting will accent the noise and static found on AM radio. Likewise, you may want to use  22.05 kHz for FM radio, although you still may end up accenting high frequency noise. The 44.1 kHz sample rate is almost never used for radio applications


b. Mono/Stereo. If you are using AM radio you will always use the mono option. If you are using FM radio and have the proper jacks, you can use a stereo option.

c. 8-Bit/16-Bit. This option controls the dynamic range of the audio. Dynamic Range is the range of loudness between the softest and loudest sounds. In almost all applications, 16-bit is the preferred option since it produces more realistic and natural sound.

2. Adjust Volume. Make sure all your cables are plugged in and the delay is set to 0.1 seconds. Turn on your radio  and press the "Play" button. Turn up the volume on the radio until you hear sound. (If you don't hear sound, check your cables, adaptors and jacks and make sure they are plugged in the Line Input. Also check your computer's configuration making sure the Line Input and the SW output are not muted and their volume controls are turned up at least half way.)

Now check the VU check box in the lower right corner. You should see the  audio levels graphically displayed just above the check box. Turn the radio volume up until it almost reaches the top. The box at the top should always be green and never red. If the box turns red even for a fraction of a second, the audio is too high and will be distorted.

3. Adjust Delay. Your Television Signal can take many different paths to reach your receiver. For example, it may travel by satellite and each satellite bounce adds about a second of delay. Also, many live events have 5 second delay so that the broadcast crew can catch any obscene language or gestures that might be caught accidentally on camera. Finally, digital TVs introduce their own delays.

Radio is different. It is usually sent directly to the broadcast station and transmitted immediately. That means there is practically no delay in the signal. What the Audio Delay program does is delay the radio sound so it matches the delay of the Television and is synchronized with video stream.

The final task is to adjust the Audio Delay program so the delays exactly match the television.To do this, press the Play Button again to disable playback. Next, increase the delay to about 2.5 seconds. This is the typical delay for off an air broadcast with no satellite delay. Now re-press the Play Button. There will be a 2.5 second delay before the audio starts playing. Watch the television while listening to the audio.  If the audio is a head or behind the video, repeat the steps above, adjust the delay up or down, until the audio is in sync with the video. Remember in some cases the delay may be more than 10 seconds.

Contact Us

Custom Search