Moving and mixing sounds on your computer

We are often faced with situations where we need to send audio output from one application to another. For example, if you would like to record an audio stream, in our favorite audio editor, we would need to shovel the stream to the audio editor. This is not easy to do. Alternatively, we might be making a podcast of the game and may want to pipe the audio of the game to the podcast. An extremely crude way of doing this is using an external microphone to record the sound coming out of your speakers. Alternatively, on a computer, there may be a feature that allows you to record what you are hearing. Another alternative in this situation is the use of an external application called virtual audio cable.

Virtual audio cable’s are exactly what they say they are. They behave like cords that you connect to the input and output jacks of your sound card. This allows you to move audio from one application to another. For example, if you are having a Skype conversation and want to play a song that you recorded over Skype, you could use virtual audio cable’s to connect your song playing application such as the Windows media player to Skype.

T

he way virtual audio cable works is that you initially create as many cables as you think you would need. Usually, 2 cables are enough. Once you have done that, each cable shows up as a sound card on your computer.

This is where the fun begins.

You need to plan what bit of audio you need to send where. For example, if we wanted to send audio from Windows media player through Skype, we would do the following.

1. We would set up one cable which would be the input for Skype.

2. We would then use the audio repeater to repeat the audio from our microphone to that cable.

3. We would then set the Windows media player the use this cable as its output.

Another way to do this is to have two cables. On the first cable, you set Windows media player to feed data. The second cable holes your microphone. You can then set up an audio repeater from the first cable to the second cable. Your Skype is connected to the second cable.

This is all there is to it.

Note:
you still need to use the audio repeater MME as opposed to the audio repeater ks or kernal mode.

You can get more help on virtual audio cable by weeding its manual. You can get the program from the following website.
virtual audio cable home page


Filed under: commonTasks — Tags: , — security-writer @ August 26, 2012 06:35

MikroTik, enterprise functionality at home prices

Most of us, who purchase routers, go with “established” brands such as Cisco, NETGEAR and D-Link. There is not too much of a difference amongst these brands. Face it; routers are just boxes with wires and lights. However, these little boxes govern how we access the Internet and in many cases, play a role in determining whether the average attacker is able to break into our computers. MikroTik is not something that usually features on the home or small business user’s technology choice. However, the prospective CTO and or home buyer should consider this company carefully. Some of the features of their boxes are as follows.
1.    CALEA compliance.
2.    Support of scriptable firewall rules.
3.    The use of a proprietary mac-telnet protocol that allows you to access the router even if the IP setup is malfunctioning.
4.    A fail secure configuration upon firmware upgrade or on improper shutdown.
5.    Support for protocols such as SIP, IP v6, OSPF and RIP.
6.    A variety of means to access the router namely, Ssh, the web (both http and https), winbox (a proprietary application) and telnet.
7.    A means of programmatically controlling the router.
8.    Very low power consumption.

The routers do take some configuring and if you want manufacturer support beyond the first month, you need to pay. There are active support forums though where members are quite helpful even to new users.

For more information see the MikroTik website.


Filed under: networking — Tags: , , — security-writer @ August 17, 2012 22:52