What are the best audio and video cables for a home entertainment system?
Q. For video I have an hdmi cable that connects my satellite receiver to my TV. Now I have an audio out on my TV with the two red/white rca plugs, the orange coaxial plug, and the digital optical plug. Which one is the best to use to go to my audio receiver?
Asked by John P - Sun Nov 30 18:40:33 2008 - - 3 Answers - 0 Comments

A. You can use either optical or coax digital audio out - it really makes very little difference - if any - for digital signals. However, since you have a sat receiver, connect dig audio out from the sat receiver (NOT the TV) to the A/V receiver.
Answered by TV guy - Sun Nov 30 18:45:53 2008

How do I transfer audio from a camcorder (tape) to a computer in the form of mp3 files?
Q. My band had recorded a performance and we are interested in using the audio as a demo. However, none of us know how to transfer from the tape to the computer, and if we make it that far, how to extract only the audio. Then we would need to somehow convert the files to mp3. Any ideas? Thanks.
Asked by nejere - Wed Apr 8 10:54:00 2009 - - 4 Answers - 0 Comments

A. Which tape camcorder? Digital8 and MiniDV are digital tape formats that connect to your computer with a firewire cable between the DV port on the camcorder and the firewire port on the computer to import the video and the audio. VHS-C, VHS, Beta, Hi8 and others are analog - to transfer the video and audio to your computer, you need a capture card or analog/digital converter from Pinnacle (Dazzle) or Canopus (ADVC55). If all you want is the audio and do not need the video, ALL camcorders come with an AV cable that you would normally use to connect the camcorder to a TV to watch the playback. Instead of connecting to a TV, connect the audio RCA jacks to your computer's mic jack - you will need an RCA female to 1/8" (3.5mm) adapter. Some… [cont.]
Answered by Little Dog - Wed Apr 8 13:17:12 2009

How to send an audio signal via infrared?
Q. I want to send an audio signal via infrared and then receive it and play it through speakers (headphones). The plan is to use some sort of ADC to convert the audio signal to digital, send the signal wirelessly, receive and clean it up using a schmitt and then a DAC to convert the signal back to an analogue one. It will then be played through the speakers. Can anyone help with any aspect of this - particularly some possible ways to send the digital signal via infrared. Thanks in advance.
Asked by Seb B - Tue Oct 21 16:05:59 2008 - - 2 Answers - 0 Comments

A. You could use a delta-modulator instead of an adc. The premise is, the wave is almost always changing, so send "1" if the present sample is greater than the previous sample, otherwise, send 0. Use AM modulation to modulate 1's onto a carrier. 56k or higher might work, then pulse the IR transmitter with 56k to send "1", leave it off to send "0". At the other end, detect the 56k, and rectify it to generate your bitstream again. Feed the bitstream into the direction input of an up/down counter, with a free running clock at approximately the same sample frequency. If this method doesn't appeal to you, try using a "parallel to serial shift register" or UART chip (16550) to turn the ADC 8 bit output to serial, and then use another matching… [cont.]
Answered by David F - Tue Oct 21 16:23:29 2008