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Basic knowledge about recording with the PC
The record function converts analog audio signals – records, tapes, sounds,
speech – into digital data, which can be saved on the PC and edited with
MAGIX Audio Cleaning Lab MX.
The device which is used to digitalize the audio signals is already built into
most sound cards and aptly called an analog-digital converter, often
abbreviated with A-to-D, ATD or A/D. In order to record sounds, the A/D
converter takes samples of the sound to be digitalized at fixed intervals by
measuring the voltage level of the signal. The frequency of the sampling is
called the sample rate and naturally lies within the kHz frequency range;
several thousand times per second. The higher the sample rate, the more
samples are recorded by the A/D converter, thus making the sound
conversion closer to the original.
The precision with which the A/D converter measures the voltage level of the
analog signal is determined by the sample resolution. The same principle
applies here: The finer the resolution, the better and more natural the digital
conversion.
Audio recordings in CD quality are recorded with a sample rate of 44.1 kHz
and a resolution of 16 bits.
Connecting the source for recording
First of all, the source of the audio material must be connected to the sound
card input. Again, there are several possibilities which primarily depend on the
type of equipment you have.
If you are recording from a microphone, then please connect the microphone
to the microphone jack on your sound card (usually red).
If you want to record material from a stereo system, then you can use the
line-out or AUX out jacks on the back of your amplifier or tape deck. This
involves connecting them to the sound card input (usually red).
If your amplifier has no separate output (other than for the speakers), then you
can use the connection intended for headphones for your recordings. In most
cases, you will need a cable with two mini-stereo jacks. This type of
connection has the advantage of being able to set the headphone input signal
level with a separate volume. As headphone connections generally are not the
best, it is advised that you use the line outputs if possible.
When recording cassettes from a tape deck, you can connect the tape deck's
line out directly to the sound card input.
When recording from vinyl records, you should not connect the record
player's output directly with the sound card because the phono signal needs